Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On 12/24/2011 12:04 AM, Chuck Banshee wrote:
This is my first time installing cat5 cable in my house and I am unsure how to connect to RJ45 jacks that I need to put in the wall. I've installed a WISP antenna 75 feet from the house& will be routing the outdoor cat5 cable into the middle of the house (another 25 or so feet) - but I have a few 'design' questions I'd like to ask those more experienced than I am. Pictured here is what I have in the wall in the middle of the house: http://picturepush.com/public/7212874 or www1.picturepush.com/photo/a/7212874/1024/Anonymous/cat5-questions.gif I'm not sure if it's best to route the wire all the way from the antenna to the middle of the house (about 75 feet to the house and another 25 or 30 feet zig-zagging to the crawl space and then up to the newly drilled hole at the wall). I'm going to put a wall plate at the wall in the middle of the house; but should I also put a wall plate where the wire enters the house? Does breaking the line into sections degrade the signal? If I do put a wall plate at the entrance to the house, I'll likely put the POE (power over ethernet) at the wall inside the house (otherwise it will go in the middle of the house next to the WRT54G router). When I put a wall plate in the middle of the house, would you add a second female jack (just in case for future use?). Or does that also degrade the signal? In summary, I'm not sure if I should strive to keep the line intact and how I should terminate it. Any advice? I'm a bit confused here. It should be one device per line, so what are you paralleling? I'd put the router someplace like a closet in the middle of the house and run wires to each room as needed. There are "structured" wiring bays if you want to get fancy, rather than have wires dangling in the closet. Kind of old school here. I think today you would just wire data. Forget the RF unless you insist on cable. http://www.swhowto.com/ http://www.computercablestore.com/12..._PID48600.aspx I've only see these in rack mounts, i.e. office environments. Wall mounts is what would make more sense for a house. I'd put in the highest speed wire and patch you can afford. Also, there are issues with how you radius the wire. I don't think this is rocket science, but you do need to be scientific about it. Your AM radio may hear these wires sing, but streaming radios are the way to go. I haven't used a broadcast radio other than shortwave in 4 or 5 years. There are shielded cables to reduce the EMI. Probably OK for a short distance. There are ground mismatch issues with shielded cables. Cat 6 is commonplace. Cat 7 is out there, though I don't recall seeing it in stores. A twisted pair guru told me (and I have no way to verify this) that once a company can do cat X, eventually everything the sell is Cat X, even if it is labeled Cat (X-1). Once you have the twist (balance) down, you eventually make everything to that grade as machinery gets fixed. Some of the cat 7 wire has teflon insulation. I'd certainly rest easier at night knowing the wires in the wall are good for high temperature. Incidentally I have a very old Zircon stud finder. They called it the video sensor. It works well. But your magnet trick looks good to me. http://www.zircon.com/discontinued/s...eoscanner.html This device even found a shallow buried pipe that some rancher gypsy installed. |
#2
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 00:41:58 -0800, miso wrote:
Cat 6 is commonplace. Cat 7 is out there, though I don't recall seeing it in stores. A twisted pair guru told me (and I have no way to verify this) that once a company can do cat X, eventually everything the sell is Cat X, even if it is labeled Cat (X-1). Once you have the twist (balance) down, you eventually make everything to that grade as machinery gets fixed. Cat 5 or 6 cannot be made on the same machinery as cat7 because cat7 uses individually shielded wires, twiisted together into a sheilded cable. REALLY nasty stuff to work with. And 3 standards - cat7, cat7a and cat7f. Some of the cat 7 wire has teflon insulation. I'd certainly rest easier at night knowing the wires in the wall are good for high temperature. Incidentally I have a very old Zircon stud finder. They called it the video sensor. It works well. But your magnet trick looks good to me. http://www.zircon.com/discontinued/s...eoscanner.html This device even found a shallow buried pipe that some rancher gypsy installed. |
#3
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
"miso" wrote in message ... I'm a bit confused here. It should be one device per line, so what are you paralleling? I'd put the router someplace like a closet in the middle of the house and run wires to each room as needed. There are "structured" wiring bays if you want to get fancy, rather than have wires dangling in the closet. All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. |
#4
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. I do wireless now, but given my druthers, I'd do it up all wired and put a server/Drobo/whatever in that closet. New construction has structured wiring as an add-on. |
#5
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
Cat 5 or 6 cannot be made on the same machinery as cat7 because cat7 uses individually shielded wires, twiisted together into a sheilded cable. REALLY nasty stuff to work with. And 3 standards - cat7, cat7a and cat7f. OK. I was told that in the cat 5e era, with cat 6 coming online. With electronics, sometimes items are truly different and sometimes they are tested and selected for grade. If the construction is different, they can't be the same obviously. If the components are selected for grade, then often they sell "A" grade on the "B" grade line just to fill orders. In the IC business, the procedure is known as "paint and remark". Now if 7, 7a, and 7f use the same materials, then there is a chance at some point they are the same quality. |
#6
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 16:23:26 -0800, miso wrote:
All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. I do wireless now, but given my druthers, I'd do it up all wired and put a server/Drobo/whatever in that closet. New construction has structured wiring as an add-on. I agree. Wireless should be used when other methods (CAT5 or fiber) are not available. The reliability and speed of the connection is well worth the effort running the wires or fiber. If speed is less of an issue than convenience, consider using HomePlug or HomePNA. For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. Bundles of CAT5, fiber, station wire, alarm wire, intercom wire, thermocouple wire, and coax cable are available for those who fail to appreciate conduit. Actually, it's not the usual PVC electrical conduit but rather "smurf tube" or HDPE (high density polyethylene) pipe: http://www.avsforum.com/avs-vb/showthread.php?t=901909 http://store.cablesplususa.com/networking-infrastructure-premier-conduit-raceway.html However, if you enjoy dealing with interference from the neighbors, municipal wi-fi, wireless security cameras, TIVO, wireless TV, microwave ovens, etc, wireless is for you. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#7
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
"Jeff Liebermann" wrote in message ... However, if you enjoy dealing with interference from the neighbors, municipal wi-fi, wireless security cameras, TIVO, wireless TV, microwave ovens, etc, wireless is for you. I often hear/read about those rebuttals to wireless, but after many years of using wireless, I have yet to have any major issues. In fact, I had several machines connected. Some were wired and some wireless. I had more problems with some of the wired than I did with wireless. It's not foolproof, but it doesn't have the major interference problems you and many have stated. |
#8
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 17:21:37 -0800, Jeff Liebermann
wrote: For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. You've mentioned the star topology twice now. I agree it is the best way to build the wired network. If one segment goes down, the rest of the network is still up. Easier to trouble shoot a single segment. Using a ring topology means more troubleshooting. |
#9
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 21:48:06 -0500, "Justin Time"
wrote: "Jeff Liebermann" wrote in message .. . However, if you enjoy dealing with interference from the neighbors, municipal wi-fi, wireless security cameras, TIVO, wireless TV, microwave ovens, etc, wireless is for you. I often hear/read about those rebuttals to wireless, but after many years of using wireless, I have yet to have any major issues. In fact, I had several machines connected. Some were wired and some wireless. I had more problems with some of the wired than I did with wireless. It's not foolproof, but it doesn't have the major interference problems you and many have stated. Well, what can I say? My experience has been quite the opposite. I derive a fair part of my income from fixing wireless problems. Perhaps I just see more wireless horror stories than you. Dunno. It's not just the interference problems, some of which I itemized above. There's also some rather strange wireless clients, buggy wireless router firmware, compatibility issues, and just plain bad design. Here's an easy one, that I hear all to often. Customer has a wireless PC laptop. He uses the laptop successfully on the office WLAN. He slams the lid shut, putting the laptop into standby or hibernate. He goes home, opens the lid, and the laptop resumes. One problem... he can't connect. A bit of tinkering finds that the laptop still thinks he's on the office WLAN, and is desperately looking for the office wireless access point that's not there. If the IP address of the office router and home router are the same, it's even more confusing (ARP cache). The DHCP lease time hasn't expired yet, so the DHCP client isn't going to break the RFC and initiate a premature DHCP renewal. There are plenty of ways to fix this (IPCONFIG, reboot, turn power on/off to the wireless card in the laptop), but it will usually drive one into frustration mode the first time they see it. This doesn't happen with a wired LAN. Plenty of other ways to have wireless drive one nuts. I get a call from a dentists office wondering if I could do something to make their assorted wireless laptops work better. I arrive and find the outside of the adjacent building festooned with wireless security cameras. As long as they are running, Wi-Fi isn't working. I leave it to the dentist to convince the neighbor to switch the cameras to wired. Need more stories? Just ask. However, you are correct that there are also plenty of wired issues. I've had to deal with a few wiring and connector issues on network hardware. Learning to crimp CAT5 into an RJ45 is fairly easy, but does take some practice. I see far too many partial crimps and creative wiring. Still, they're minor compared to the wireless problems. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#10
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 19:29:24 -0800, Oren wrote:
On Sat, 24 Dec 2011 17:21:37 -0800, Jeff Liebermann wrote: For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. You've mentioned the star topology twice now. I agree it is the best way to build the wired network. If one segment goes down, the rest of the network is still up. Easier to trouble shoot a single segment. Yep. That's the ONLY way to do ethernet over twisted pair. Bus topology is for 10base2 coax and POTS phones. Ring is for fiber or token ring. https://www.google.com/search?q=ethernet+topology&tbm=isch Using a ring topology means more troubleshooting. Not really. Ring topology is used for fiber because it offers improved reliability. Break the ring at any point, and the data simply goes around the long way until the break is fixed. Two breaks just means a small section of the ring is inaccessible. The rest of the ring still works. It really makes more sense over a large distance, such as going around the entire SF Bay area, rather than just around the house. The problem with home networks and fiber rings is that there just isn't any affordable hardware available to make it happen. It's also not really necessary at home, unless you have kids, puppies, or rats chewing on the cables and need improved uptime. The reason I keep mentioning star topology is that many users are very familiar with the common POTS (plain old telephone service) bus type topology. Find the cable that's snaking through the walls, and just tap in with the phone instrument. That's convenient, but doesn't work with 10/100baseT ethernet. It DOES work with 10base2 coax cable ethernet, but that's limited to 10Mbits/sec half-duplex. I just wanted to make sure that the OP doesn't try to wire his house in the style of the POTS phone. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#11
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 19:29:24 -0800, Oren wrote:
On Sat, 24 Dec 2011 17:21:37 -0800, Jeff Liebermann wrote: For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. You've mentioned the star topology twice now. I agree it is the best way to build the wired network. If one segment goes down, the rest of the network is still up. Easier to trouble shoot a single segment. Using a ring topology means more troubleshooting. Cannot run ring topology ethernet except on Co-ax.. AKA Slo-ax |
#12
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 20:02:09 -0800, Jeff Liebermann
wrote: On Sat, 24 Dec 2011 21:48:06 -0500, "Justin Time" wrote: "Jeff Liebermann" wrote in message . .. However, if you enjoy dealing with interference from the neighbors, municipal wi-fi, wireless security cameras, TIVO, wireless TV, microwave ovens, etc, wireless is for you. I often hear/read about those rebuttals to wireless, but after many years of using wireless, I have yet to have any major issues. In fact, I had several machines connected. Some were wired and some wireless. I had more problems with some of the wired than I did with wireless. It's not foolproof, but it doesn't have the major interference problems you and many have stated. Well, what can I say? My experience has been quite the opposite. I derive a fair part of my income from fixing wireless problems. Perhaps I just see more wireless horror stories than you. Dunno. It's not just the interference problems, some of which I itemized above. There's also some rather strange wireless clients, buggy wireless router firmware, compatibility issues, and just plain bad design. Here's an easy one, that I hear all to often. Customer has a wireless PC laptop. He uses the laptop successfully on the office WLAN. He slams the lid shut, putting the laptop into standby or hibernate. He goes home, opens the lid, and the laptop resumes. One problem... he can't connect. A bit of tinkering finds that the laptop still thinks he's on the office WLAN, and is desperately looking for the office wireless access point that's not there. If the IP address of the office router and home router are the same, it's even more confusing (ARP cache). The DHCP lease time hasn't expired yet, so the DHCP client isn't going to break the RFC and initiate a premature DHCP renewal. There are plenty of ways to fix this (IPCONFIG, reboot, turn power on/off to the wireless card in the laptop), but it will usually drive one into frustration mode the first time they see it. This doesn't happen with a wired LAN. Plenty of other ways to have wireless drive one nuts. I get a call from a dentists office wondering if I could do something to make their assorted wireless laptops work better. I arrive and find the outside of the adjacent building festooned with wireless security cameras. As long as they are running, Wi-Fi isn't working. I leave it to the dentist to convince the neighbor to switch the cameras to wired. Need more stories? Just ask. However, you are correct that there are also plenty of wired issues. I've had to deal with a few wiring and connector issues on network hardware. Learning to crimp CAT5 into an RJ45 is fairly easy, but does take some practice. I see far too many partial crimps and creative wiring. Still, they're minor compared to the wireless problems. You want to try the job I had last year. Moved an insurance agency into a new build ing that had been pre-wired by the original tennant - who went bankrupt - and the IT guys that had not been paid for the server etc came in and lopped off all the cables 2 feet from the ceiling. 78 cable runs - undocumented - and half wired to "A" spec and half to "B". I ended up putting a switch rack above the door to the former server room, terminating all those cables - then tracing them back to their end-points, testing them, and re-wiring all of them that ended up "crossed". Then running "home runs" from the switch rack to the relocated server room. Then we added another kilometer of cable into a trough in the floor to serve another 12 workstations. Half of the cables for corporate network - the other half for VOIP phone system (with POE). |
#13
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 24 Dec 2011 20:15:12 -0800, Jeff Liebermann wrote:
On Sat, 24 Dec 2011 19:29:24 -0800, Oren wrote: On Sat, 24 Dec 2011 17:21:37 -0800, Jeff Liebermann wrote: For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. You've mentioned the star topology twice now. I agree it is the best way to build the wired network. If one segment goes down, the rest of the network is still up. Easier to trouble shoot a single segment. Yep. That's the ONLY way to do ethernet over twisted pair. Bus topology is for 10base2 coax and POTS phones. Ring is for fiber or token ring. https://www.google.com/search?q=ethernet+topology&tbm=isch Using a ring topology means more troubleshooting. Not really. Ring topology is used for fiber because it offers improved reliability. Break the ring at any point, and the data simply goes around the long way until the break is fixed. Two breaks just means a small section of the ring is inaccessible. The rest of the ring still works. It really makes more sense over a large distance, such as going around the entire SF Bay area, rather than just around the house. "Rings" in reality, aren't. They're double "stars", with a pair of channels, one each direction from a central hub to the points of the star. This is done for serviceability. The network can be managed from a central point. The original Token Ring was a true ring but it was quickly found that the network got unmanageable. In fact, Token Ring over CAT-5 isn't uncommon at all (if you can say Token Ring isn't "uncommon" anymore ;-). The problem with home networks and fiber rings is that there just isn't any affordable hardware available to make it happen. It's also not really necessary at home, unless you have kids, puppies, or rats chewing on the cables and need improved uptime. The reason I keep mentioning star topology is that many users are very familiar with the common POTS (plain old telephone service) bus type topology. Find the cable that's snaking through the walls, and just tap in with the phone instrument. That's convenient, but doesn't work with 10/100baseT ethernet. It DOES work with 10base2 coax cable ethernet, but that's limited to 10Mbits/sec half-duplex. I just wanted to make sure that the OP doesn't try to wire his house in the style of the POTS phone. Most POTS is wired in a star, today. It's easier in new construction, to put all the communications stuff together. Of course telephones don't care what the wire looks like. If it made it the five miles from the CO, you could have barbed wire in the house and it would work. ;-) |
#14
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Sat, 24 Dec 2011 00:41:58 -0800, miso wrote:
I'm a bit confused here. It should be one device per line, so what are you paralleling? I think I'm confused too so that's why it's hard to help me. Mainly I was worried whether I should BREAK the line at the entrance to the house (and put the POE there) or if I should keep the cat5 line continuous to the middle of the house (another 25 feet snaked about). I was worried whether the break adds appreciable degradation? |
#15
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Sat, 24 Dec 2011 12:10:20 -0500, Justin Time wrote:
Centralize a wireless router and forego wiring the house. That's essentially what I'm attempting. I'll wire from the WISP antenna to the house (~ about 75') and then from the house to the center of the house (~ another 25') where I'll put a Linksys WRT54G wireless router. I was mostly wondering if it was a good idea to BREAK the line at the point where it entered the house (and put a jack there plus the POE power supply) ... or ... if I should strive to keep the line intact up to the router in the center of the house. |
#17
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Dec 24, 11:02*pm, Jeff Liebermann wrote:
On Sat, 24 Dec 2011 21:48:06 -0500, "Justin Time" wrote: "Jeff Liebermann" wrote in message .. . However, if you enjoy dealing with interference from the neighbors, municipal wi-fi, wireless security cameras, TIVO, wireless TV, microwave ovens, etc, wireless is for you. I often hear/read about those rebuttals to wireless, but after many years of using wireless, I have yet to have any major issues. In fact, I had several machines connected. Some were wired and some wireless. I had more problems with some of the wired than I did with wireless. It's not foolproof, but it doesn't have the major interference problems you and many have stated. Well, what can I say? *My experience has been quite the opposite. *I derive a fair part of my income from fixing wireless problems. Perhaps I just see more wireless horror stories than you. *Dunno. It's not just the interference problems, some of which I itemized above. *There's also some rather strange wireless clients, buggy wireless router firmware, compatibility issues, and just plain bad design. Here's an easy one, that I hear all to often. *Customer has a wireless PC laptop. *He uses the laptop successfully on the office WLAN. *He slams the lid shut, putting the laptop into standby or hibernate. *He goes home, opens the lid, and the laptop resumes. *One problem... he can't connect. *A bit of tinkering finds that the laptop still thinks he's on the office WLAN, and is desperately looking for the office wireless access point that's not there. *If the IP address of the office router and home router are the same, it's even more confusing (ARP cache). *The DHCP lease time hasn't expired yet, so the DHCP client isn't going to break the RFC and initiate a premature DHCP renewal. *There are plenty of ways to fix this (IPCONFIG, reboot, turn power on/off to the wireless card in the laptop), but it will usually drive one into frustration mode the first time they see it. *This doesn't happen with a wired LAN. Plenty of other ways to have wireless drive one nuts. *I get a call from a dentists office wondering if I could do something to make their assorted wireless laptops work better. *I arrive and find the outside of the adjacent building festooned with wireless security cameras. *As long as they are running, Wi-Fi isn't working. *I leave it to the dentist to convince the neighbor to switch the cameras to wired. Need more stories? *Just ask. However, you are correct that there are also plenty of wired issues. I've had to deal with a few wiring and connector issues on network hardware. *Learning to crimp CAT5 into an RJ45 is fairly easy, but does take some practice. *I see far too many partial crimps and creative wiring. *Still, they're minor compared to the wireless problems. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 #http://802.11junk.com* * * * * * * #http://www.LearnByDestroying.com* * * * * * * AE6KS Agree with your comments about wireless. Wireless is great when it's impractical for a wired connection and it works. But it's no subsitute for a direct wired connection. My experience with both in several environments is consistent with yours. To the points you've already covered, I'd add the issue of security. That's one more layer of stuff to deal with for wirless that you don't have to worry about with wired. If you have no security, then anyone within range can access your network. If you use encryption, not only does it usually impact performance, but it also adds another issue everytime you add or replace a device on the network. Add a Tivo or PC and now you have to remember and find the encryption key. Sounds easy, but I've seen folks who spent hours trying to find the key, get it entered correctly, etc. With wired I can do a 1 gig Ethernet connection that is reliable and inherrently secure. High end wireless routers, ie 802.11N that are "gigabit" actually only support that rate on the wired connections. For wireless the theoretical data rate is 300Mbits. And you might get near that if the two points are in the same room. Across the house, it's doubtful. So, if I had an easy wire run, no question I'd do it. |
#18
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Dec 25, 1:41*am, Chuck Banshee wrote:
On Sat, 24 Dec 2011 12:10:20 -0500, Justin Time wrote: Centralize a wireless router and forego wiring the house. That's essentially what I'm attempting. I'll wire from the WISP antenna to the house (~ about 75') and then from the house to the center of the house (~ another 25') where I'll put a Linksys WRT54G wireless router. I was mostly wondering if it was a good idea to BREAK the line at the point where it entered the house (and put a jack there plus the POE power supply) ... or ... if I should strive to keep the line intact up to the router in the center of the house. I think others have already responded that every time you put a connection in a cable, you introduce one more place for problems to occur. Put that connection outside, where the cable enters the house and it's even more susceptable to problems. Another secondary issue is each time you break the cable, make a splice or use another connector there is some signal loss. In this case, I think that's a minor point though. Another issue I'd be concerned about is lightning protection. Since the antenna is outside, I'd make sure the mast is directly grounded and I'd also put some kind of surge protection on the wires entering the house. Exactly what kind is available off-the-shelf for this application I don't know. |
#19
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
Justin Time wrote the following:
"miso" wrote in message ... I'm a bit confused here. It should be one device per line, so what are you paralleling? I'd put the router someplace like a closet in the middle of the house and run wires to each room as needed. There are "structured" wiring bays if you want to get fancy, rather than have wires dangling in the closet. All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. My wireless experience. When I installed another computer in the basement, after already having a computer in each of our 3 bedrooms running off a wired router in the master bedroom (2 daughters with their own computer in their bedrooms), I elected to replace the wired router with a wireless router because the basement was 3 floors down and on the opposite side of the house from the master bedroom. This would have required running the cat cable up though the MB wall into the upper attic, then across the attic rafters to the other side of the upper attic, then down one floor into the lower attic, then down though that attic wall 2 floors into the basement. I didn't want to go though all that destruction. After the wireless router was hooked up, I had a lot of problems with the wireless signal in the basement, basically because the signal had to go though walls and floors some 60 feet away. I tried moving the wireless receiver all around the basement, including hanging it from the ceiling in various places, trying to find the best place to get a good signal. But wherever I put it, I would get a wavering signal, good one time then bad another, sometimes within minutes of moving it. Kinda like my cell phone signal in the basement which wavers from 1 bar to 4. I finally moved the receiver across the room to the opposite side of the basement without leaving my computer chair. Of course, the modem, being in several pieces now, didn't get any signal at all. :-) I then reluctantly went through the trouble of threading a cat5 cable through the house. The wireless router is still used because even though we lost 2 wired computers when the girls moved out, we have a wireless laptop in the kitchen for those times when you need the internet to look something up, or connecting to one of the social networking services (not me) without having to run up or down stairs. Besides, it can be used throughout the main floor, or hooked up to the LED HDTV. -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
#20
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
willshak wrote the following:
Justin Time wrote the following: "miso" wrote in message ... I'm a bit confused here. It should be one device per line, so what are you paralleling? I'd put the router someplace like a closet in the middle of the house and run wires to each room as needed. There are "structured" wiring bays if you want to get fancy, rather than have wires dangling in the closet. All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. My wireless experience. When I installed another computer in the basement, after already having a computer in each of our 3 bedrooms running off a wired router in the master bedroom (2 daughters with their own computer in their bedrooms), I elected to replace the wired router with a wireless router because the basement was 3 floors down and on the opposite side of the house from the master bedroom. This would have required running the cat cable up though the MB wall into the upper attic, then across the attic rafters to the other side of the upper attic, then down one floor into the lower attic, then down though that attic wall 2 floors into the basement. I didn't want to go though all that destruction. After the wireless router was hooked up, I had a lot of problems with the wireless signal in the basement, basically because the signal had to go though walls and floors some 60 feet away. I tried moving the wireless receiver all around the basement, including hanging it from the ceiling in various places, trying to find the best place to get a good signal. But wherever I put it, I would get a wavering signal, good one time then bad another, sometimes within minutes of moving it. Kinda like my cell phone signal in the basement which wavers from 1 bar to 4. I finally moved the receiver across the room to the opposite side of the basement without leaving my computer chair. Of course, the ///modem///, Sorry, I meant 'receiver'. being in several pieces now, didn't get any signal at all. :-) I then reluctantly went through the trouble of threading a cat5 cable through the house. The wireless router is still used because even though we lost 2 wired computers when the girls moved out, we have a wireless laptop in the kitchen for those times when you need the internet to look something up, or connecting to one of the social networking services (not me) without having to run up or down stairs. Besides, it can be used throughout the main floor, or hooked up to the LED HDTV. -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
#21
Posted to alt.home.repair
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
willshak wrote: Justin Time wrote the following: "miso" wrote in message ... I'm a bit confused here. It should be one device per line, so what are you paralleling? I'd put the router someplace like a closet in the middle of the house and run wires to each room as needed. There are "structured" wiring bays if you want to get fancy, rather than have wires dangling in the closet. All computer and Internet devices are wireless and the rest of the electronic technology is close behind, such as TVs. Centralize a wireless router and forego wiring the house. My wireless experience. When I installed another computer in the basement, after already having a computer in each of our 3 bedrooms running off a wired router in the master bedroom (2 daughters with their own computer in their bedrooms), I elected to replace the wired router with a wireless router because the basement was 3 floors down and on the opposite side of the house from the master bedroom. This would have required running the cat cable up though the MB wall into the upper attic, then across the attic rafters to the other side of the upper attic, then down one floor into the lower attic, then down though that attic wall 2 floors into the basement. I didn't want to go though all that destruction. After the wireless router was hooked up, I had a lot of problems with the wireless signal in the basement, basically because the signal had to go though walls and floors some 60 feet away. I tried moving the wireless receiver all around the basement, including hanging it from the ceiling in various places, trying to find the best place to get a good signal. But wherever I put it, I would get a wavering signal, good one time then bad another, sometimes within minutes of moving it. Kinda like my cell phone signal in the basement which wavers from 1 bar to 4. I finally moved the receiver across the room to the opposite side of the basement without leaving my computer chair. Of course, the modem, being in several pieces now, didn't get any signal at all. :-) I then reluctantly went through the trouble of threading a cat5 cable through the house. The wireless router is still used because even though we lost 2 wired computers when the girls moved out, we have a wireless laptop in the kitchen for those times when you need the internet to look something up, or connecting to one of the social networking services (not me) without having to run up or down stairs. Besides, it can be used throughout the main floor, or hooked up to the LED HDTV. Hmmm, My house is small enough to cover with a wireless router. Desk top, Laptop PCs, a Macbook, wireless AIO printer and Home theater, Xbox, etc. scattered around the house. All of them play well. Router is Netgear WNDR3700V2 with OpenWrt firmware which even drives NAS box. Router is located in the loft located in the top floor. |
#22
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sun, 25 Dec 2011 06:41:34 +0000 (UTC), Chuck Banshee
wrote: On Sat, 24 Dec 2011 12:10:20 -0500, Justin Time wrote: Centralize a wireless router and forego wiring the house. That's essentially what I'm attempting. I'll wire from the WISP antenna to the house (~ about 75') and then from the house to the center of the house (~ another 25') where I'll put a Linksys WRT54G wireless router. I was mostly wondering if it was a good idea to BREAK the line at the point where it entered the house (and put a jack there plus the POE power supply) ... or ... if I should strive to keep the line intact up to the router in the center of the house. With that distance, and setup, one piece to the center of the house would be my recommendation. |
#23
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sun, 25 Dec 2011 05:56:53 -0800 (PST), "
wrote: To the points you've already covered, I'd add the issue of security. Cringe. I promised myself that I would not get involved in any more security discussions. However, since this is a holiday... That's one more layer of stuff to deal with for wirless that you don't have to worry about with wired. If you have no security, then anyone within range can access your network. If you use encryption, not only does it usually impact performance, but it also adds another issue everytime you add or replace a device on the network. Add a Tivo or PC and now you have to remember and find the encryption key. Sounds easy, but I've seen folks who spent hours trying to find the key, get it entered correctly, etc. The real problem with Wi-Fi security is the shared key. All wireless clients on your network use the same shared key. If the key is compromised, so is the entire network. There are complex ways to sniff the traffic and recover the WEP/WPA key, but it's much easier to simply borrow a laptop on the network, and recover a hashed key from the registry: http://www.nirsoft.net/utils/wireless_key.html In other words, the very concept of a shared key is lacking. What's needed is a one time key, which does not need to be remembered. This is accomplished with WPA-RADIUS. The user is presented with a unique per-user login and password. The RADIUS server then delivers a one-time, per session, and unique key. You could sniff the key, but it would only be good for that session. Few home networks offer this level of key management, although it's common in corporate networks. With wired I can do a 1 gig Ethernet connection that is reliable and inherrently secure. High end wireless routers, ie 802.11N that are "gigabit" actually only support that rate on the wired connections. For wireless the theoretical data rate is 300Mbits. Chuckle. I've been tempted to offer a prize to anyone that can demonstrate a streaming wireless connection that will do 300Mbits. I know that it's been done in the lab (controlled environment) and with dual band channel bonding, but I seriously doubt it can be done in the presence of interference and uncontrolled reflections. The only reason manufacturers offer gigabit ethernet ports is that they would look rather foolish offering 100Mbits/sec ports on a router theoretically capable of 300Mbits/sec wireless. As for wired being more secure, I beg to differ. I have a small collection of ethernet taps, that I use to sniff traffic for network troubleshooting. If I wanted to sniff your network, I would install one between your broadband connection and router. Taping a single ethernet LAN port won't work because it will only see traffic on that port and broadcast traffic. http://www.netoptics.com/products/network-taps And you might get near that if the two points are in the same room. Across the house, it's doubtful. I've done about 700Mbits/sec. I forgot the exact hardware but I do recall that I had to tune both the client and server computers IP stack to get decent performance. Out of the box, I think it was about 300Mbits/sec. For testing, I use iPerf and JPerf. http://www.smallnetbuilder.com/lanwan/lanwan-howto/30408-measuring-network-performance-jperf So, if I had an easy wire run, no question I'd do it. I've never seen an easy run on a rework job. There's always some complication involved. The easier it looks, the more complicated it will become. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#24
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sun, 25 Dec 2011 00:19:16 -0500, wrote:
On Sat, 24 Dec 2011 19:29:24 -0800, Oren wrote: On Sat, 24 Dec 2011 17:21:37 -0800, Jeff Liebermann wrote: For new installations, I usually recommend running conduit in the walls from a central location (star topology). This is roughly the way structured wiring is done. You've mentioned the star topology twice now. I agree it is the best way to build the wired network. If one segment goes down, the rest of the network is still up. Easier to trouble shoot a single segment. Using a ring topology means more troubleshooting. Cannot run ring topology ethernet except on Co-ax.. AKA Slo-ax Well - only if you define the domain as a single segment - and star based Ethernet these days uses switches, and i think you are explaining about topology in a single wiring closet, where a star on 1 switch is the easiest way to set it up. But the topology between Ethernet switches can be pretty arbitary once you hvae nore than 1 device - as long as you stay with a tree, or run 1 of the protocols designed to make sure any loops do not cause problems (spanning tree, 802.1s/w RPR, etc) -- Regards - replace xyz with ntl |
#25
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
"Jeff Liebermann" wrote in message ... Well, what can I say? My experience has been quite the opposite. I derive a fair part of my income from fixing wireless problems. Perhaps I just see more wireless horror stories than you. Dunno. It's not just the interference problems, some of which I itemized above. There's also some rather strange wireless clients, buggy wireless router firmware, compatibility issues, and just plain bad design. Here's an easy one, that I hear all to often. Customer has a wireless PC laptop. He uses the laptop successfully on the office WLAN. He slams the lid shut, putting the laptop into standby or hibernate. He goes home, opens the lid, and the laptop resumes. One problem... he can't connect. A bit of tinkering finds that the laptop still thinks he's on the office WLAN, and is desperately looking for the office wireless access point that's not there. If the IP address of the office router and home router are the same, it's even more confusing (ARP cache). The DHCP lease time hasn't expired yet, so the DHCP client isn't going to break the RFC and initiate a premature DHCP renewal. There are plenty of ways to fix this (IPCONFIG, reboot, turn power on/off to the wireless card in the laptop), but it will usually drive one into frustration mode the first time they see it. This doesn't happen with a wired LAN. Plenty of other ways to have wireless drive one nuts. I get a call from a dentists office wondering if I could do something to make their assorted wireless laptops work better. I arrive and find the outside of the adjacent building festooned with wireless security cameras. As long as they are running, Wi-Fi isn't working. I leave it to the dentist to convince the neighbor to switch the cameras to wired. Need more stories? Just ask. However, you are correct that there are also plenty of wired issues. I've had to deal with a few wiring and connector issues on network hardware. Learning to crimp CAT5 into an RJ45 is fairly easy, but does take some practice. I see far too many partial crimps and creative wiring. Still, they're minor compared to the wireless problems. Since you're in the business, I can't dispute your experience and I'm sure you've had your fair share. Perhaps my location provides an interference free area thus serving my satisfaction of wireless. Being I work within a University, the connection is fairly sound as well, though, don't get me wrong, has had it's fair share of problems. Overall, I think it's safe to assume the location plays a role when going wireless and I won't dispute wired having a greater advantage over wireless. I just didn't think it was as bad as the rebuttal. It won't be the first time I'm wrong. |
#26
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sun, 25 Dec 2011 17:58:22 -0500, "Justin Time"
wrote: Being I work within a University, the connection is fairly sound as well, University services vary but are generally better than the typical home wireless derrangement. They're always centrally managed, properly configured, and tend to use better than average hardware. Corporate style services, such as RADIUS authentication, logging, traffic management, SNMP and Netflow monitoring, etc are common. Channel layout is usually well controlled. Firmware updates are maintained. Over powered amplifiers, repeaters, and monster antennas are proscribed. (So is hiding users behind a firewall or sharing a connection). Backhaul capacity is well above the level found in most homes. However, the main reason you're not seeing wireless problems is that considerable effort was put into planning and engineering before it was deployed. It has to work on paper, before it will work in the field. Locally, we have UCSC (Univ of Calif Santa Cruz). http://its.ucsc.edu/wireless/index.html Plenty of hot spots: http://www2.ucsc.edu/its2/service_catalog/cruznet/locations.php I couldn't find traffic reports that are publicly visible. Overall, I think it's safe to assume the location plays a role when going wireless and I won't dispute wired having a greater advantage over wireless. Well, my view is that it's not so much the location, as it is the planning, design, use of high end hardware, monitoring, and maintenance. If university systems were planned and installed in the same manner as the average home wireless system, I would expect serious problems. I just didn't think it was as bad as the rebuttal. It won't be the first time I'm wrong. Chuckle. No, it's not that bad. The problem with being in the repair and service biz is that I only see the broken machines and networks. I'm sure there are systems that work right out of the box, but I don't see many of those. I just see the problems. From the repair persons point of view, everything is broken. On the other foot, 802.11 wireless is nothing more than ethernet packets encapsulated in 802.11 packets. Spend some time with WireShark sniffing wireless to see how it works. Every problem that you might experience with a wired ethernet LAN, you can also experience with an 802.11 WLAN. All that wireless adds is additional layers of problems on top of the ethernet problems. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#27
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
|
#28
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Dec 25, 1:31*pm, Jeff Liebermann wrote:
On Sun, 25 Dec 2011 05:56:53 -0800 (PST), " wrote: To the points you've already covered, I'd add the issue of security. Cringe. *I promised myself that I would not get involved in any more security discussions. *However, since this is a holiday... That's one more layer of stuff to deal with for wirless that you don't have to worry about with wired. *If you have no security, then anyone within range can access your network. *If you use encryption, not only does it usually impact performance, but it also adds another issue everytime you add or replace a device on the network. *Add a Tivo or PC and now you have to remember and find the encryption key. *Sounds easy, but I've seen folks who spent hours trying to find the key, get it entered correctly, etc. The real problem with Wi-Fi security is the shared key. *All wireless clients on your network use the same shared key. *If the key is compromised, so is the entire network. *There are complex ways to sniff the traffic and recover the WEP/WPA key, but it's much easier to simply borrow a laptop on the network, and recover a hashed key from the registry: http://www.nirsoft.net/utils/wireless_key.html In other words, the very concept of a shared key is lacking. What's needed is a one time key, which does not need to be remembered. This is accomplished with WPA-RADIUS. *The user is presented with a unique per-user login and password. *The RADIUS server then delivers a one-time, per session, and unique key. *You could sniff the key, but it would only be good for that session. *Few home networks offer this level of key management, although it's common in corporate networks. With wired I can do a 1 gig Ethernet connection that is reliable and inherrently secure. *High end wireless routers, ie 802.11N *that are "gigabit" actually only support that rate on the wired connections. For wireless the theoretical data rate is 300Mbits. Chuckle. *I've been tempted to offer a prize to anyone that can demonstrate a streaming wireless connection that will do 300Mbits. *I know that it's been done in the lab (controlled environment) and with dual band channel bonding, but I seriously doubt it can be done in the presence of interference and uncontrolled reflections. *The only reason manufacturers offer gigabit ethernet ports is that they would look rather foolish offering 100Mbits/sec ports on a router theoretically capable of 300Mbits/sec wireless. As for wired being more secure, I beg to differ. *I have a small collection of ethernet taps, that I use to sniff traffic for network troubleshooting. *If I wanted to sniff your network, I would install one between your broadband connection and router. *Taping a single ethernet LAN port won't work because it will only see traffic on that port and broadcast traffic. http://www.netoptics.com/products/network-taps No question that wired can be compromised too. But installing a tap in a wired line is IMO a big step beyond connecting to a wireless LAN. If you put up a wireless LAN with no security enabled, it can be accessed by anyone within the wireless range. Like the kid in the apartment next door. For that kid to install a tap would not only require a lot more effort, but I think in most hackers minds, actually attaching something to someone's network is something they would not do for a variety of reasons. Being a physical thing, if found, there's direct evidence of tapping, which everyone knows is a crime and more likely to get police attention. Also, while it's not true, folks have a sense that anything they can connect to wirelessly is open territory. |
#29
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Dec 25, 10:01*pm, Chuck Banshee wrote:
On Sun, 25 Dec 2011 06:01:15 -0800, wrote: Another issue I'd be concerned about is lightning protection. Since the antenna is outside, I'd make sure the mast is directly grounded and I'd also put some kind of surge protection on the wires entering the house. Oh oh. I thought that by virtue of the fact the steel mast is stuck into the ground that it was 'protected' from lightning. Most of the antennas out there that are installed on a metal pole in the ground probably rely on the above. If the pole goes 4 ft into reasonable soil that's probably good enough. If you want really sound protection then a real ground rod driven into the earth and connected to the mast would be additional safety. The one thing you don't want is a metal mast on say a roof that is not earthed at all. What kind of surge protection goes on a cat5 cable? Here's one example: http://metrix.net/cat-5-lightning-arrestor-p-23.html Google is your friend. Also, looks like you may have found a reason to put a connection in the line where it enters the house. |
#30
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
|
#31
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Dec 26, 12:22*pm, Chuck Banshee wrote:
On Mon, 26 Dec 2011 05:29:04 -0800, wrote: Also, looks like you may have found a reason to put a connection in the line where it enters the house. I'm still seesawing on putting the POE in the garage where the line comes into the house ... or in the office. But, that's not really a big design decision because I most here said breaks in the line aren't a signal degradation issue (per se). The 'big' (to me) design decision was how to make the "Y"! I was confused how one signal input could be then wired to give both the office and the game room power. Oh no! Just when it was getting better, more confusion. A signal input is NOT providing power. You have a power supply that powers the electronics outside at the antenna via one cable. The other wired connections, eg to the game room, are ethernet only, no power. Now I realize it's a bunch of Y's together - in a star network - with the broadband router's LAN ports as the center of the hub! What was initially incomprehensible to me was the fact that the router's LAN ports were NOT part of the wired system. They are part of the wired system. I didn't comprehend the existence of 'dead' wires in the house (i.e., one 'live' wire from the antenna, and then all the rest being 'dead' until powered by the router's LAN ports). Of course anything not connected is dead. But if it is connected to the router LAN port, it has signals on it, not power. Capiche? That's the fundamental concept I didn't realize when I first asked! Thanks to all for the education! Now it's time to finish drilling holes and buying something to staple the wires in place properly. |
#32
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Mon, 26 Dec 2011 17:22:10 +0000 (UTC), Chuck Banshee
wrote: On Mon, 26 Dec 2011 05:29:04 -0800, wrote: Also, looks like you may have found a reason to put a connection in the line where it enters the house. I'm still seesawing on putting the POE in the garage where the line comes into the house ... or in the office. If you put the POE adapter in the garage, you can have wired Ethernet in the garage without running a second cable, although it would require a switch to do so. So the choices for wired Ethernet in the garage a 1. POE adapter & switch in garage, single cable to the office/router 2. POE adapter anywhere, two cables between garage and office Since you have a bunch of cable, the choice is probably #2... |
#33
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Mon, 26 Dec 2011 13:40:36 -0600, Char Jackson wrote:
So the choices for wired Ethernet in the garage a 1. POE adapter & switch in garage, single cable to the office/router 2. POE adapter anywhere, two cables between garage and office Since you have a bunch of cable, the choice is probably #2... Sorry I haven't responded sooner. The whole setup was dead until just now. I ended up with #2. I put the POE adapter & the router in the central office. This first ethernet setup of mine was harder than I originally envisioned (I had to wire it twice) but with all your help - it's finally working! I'll post pictures separately. |
#34
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Mon, 26 Dec 2011 05:29:04 -0800, wrote:
Most of the antennas out there that are installed on a metal pole in the ground probably rely on the above. If the pole goes 4 ft into reasonable soil that's probably good enough. UPDATE: Last night was a 'storm' (in California terms, which isn't much of a 'real' storm after all) ... but nonetheless, I heard a crashing shaking the roof and thought it was thunder. Turns out a roof tile fell down from one roofline to another! In addition, the antenna, which is just stuck into the ground into an abs plastic 2"-to-3" bushing reducer, twisted a bit in the storm - so my reception dropped from -64dBm to -88dBm. Yuck. I twisted it back into place (about a half inch of twist) but now I know I need to better secure the antenna base so it doesn't twist (we get 100mph gusts at times). I watched the antenna in the wind & rain last night, and it didn't 'bend' the 2" thick water pipe at all. I don't think I need guy wires at all as it's pretty sturdy. The only problem is that it's a 2" pipe stuck three feet into a 3.5" hole! Here's a picture this morning (in the early morning light) of the antenna. - http://www1.picturepush.com/photo/a/...mg/7393289.gif Notice the oak tree probably twisted it more so than the wind did: - http://www5.picturepush.com/photo/a/...mg/7393293.gif And, here's a picture of the 2" mast stuck three feet in a 3" hole with a 2"-to-3" abs plastic reducer at the top attempting to keep it from twisting in the wind. - http://www1.picturepush.com/photo/a/...mg/7393299.gif I'm surprised that flimsy bushing works at all given how heavy the mast is. So, the only engineering problem left is to prevent the mast from twisting in the wind from the wind or more likely the trees. BTW, do you think this slight sidewise tilt of the planar antenna matters? - http://www1.picturepush.com/photo/a/...mg/7393319.gif |
#35
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 21 Jan 2012 16:23:00 +0000 (UTC), Chuck Banshee
wrote: I twisted it back into place (about a half inch of twist) but now I know I need to better secure the antenna base so it doesn't twist (we get 100mph gusts at times). Attach some kind of radial arm to the base of the pipe that is long enough to clear the concrete base. Unistrut and several hose clamps will suffice. Pound a spike into the ground at the end of the radial arm. How much good that will do against the force of the oak tree branches hitting the panel antenna is dubious. Having the pipe twist when the oak branches hit the antenna probably saved your antenna from destruction (as seems evident by the antenna tilt). If the pipe were secured in place, I'm fairly sure that the sheet metal mounting contrivance on the back of the panel antenna would now be twisted into a pretzel. Incidentally, I would NOT pound a wooden wedge into the base bushing as it's like to split or deform the bushing. I'm surprised that flimsy bushing works at all given how heavy the mast is. So, the only engineering problem left is to prevent the mast from twisting in the wind from the wind or more likely the trees. Trim the trees. BTW, do you think this slight sidewise tilt of the planar antenna matters? - http://www1.picturepush.com/photo/a/...mg/7393319.gif Nope. It's fine (but ugly). The loss caused by polarization mismatch is fairly minor until you approach 90 degrees. Polarization Mismatch Loss in dB = 20 log (cos angle) For a 15 degree tilt, that's only 0.3dB. Even 45 degrees will only cause a 3dB drop. http://www1.picturepush.com/photo/a/7393299/img/7393299.gif Ummm... is that the Home Despot CAT5 on the ground? What happened to the waterproof direct burial CAT5? It will probably last through the winter, but all it takes is for you to walk on the cable, or some critter to chew on it, and water will get in. After that, it's just a matter of time before the copper corrodes into an intermittent. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#36
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Sat, 21 Jan 2012 16:23:00 +0000, Chuck Banshee wrote:
Turns out a roof tile fell down from one roofline to another! I forgot to post the picture I took in the morning of the broken roof! http://www5.picturepush.com/photo/a/...mg/7394088.gif Now I have yet another repair item to learn how to fix! |
#37
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal a lot?
On Sat, 21 Jan 2012 18:24:03 +0000 (UTC), Chuck Banshee
wrote: On Sat, 21 Jan 2012 16:23:00 +0000, Chuck Banshee wrote: Turns out a roof tile fell down from one roofline to another! I forgot to post the picture I took in the morning of the broken roof! http://www5.picturepush.com/photo/a/...mg/7394088.gif Now I have yet another repair item to learn how to fix! The trick is not to slip off the roof. Walking on tile is also a problem. You'll need some plywood or boards to distribute your mass. I've helped with a tile roof repair, but that was 30 years ago. http://www.practicalpressure.com/How_to_Repair_a_Tile_Roof.htm http://www.youtube.com/watch?v=XgajyIO2sKA http://www.realtor.com/home-garden/do-it-yourself/roofing/repairing-clay-tile.aspx etc. Plenty more found with Google. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#38
Posted to alt.home.repair,alt.internet.wireless
|
|||
|
|||
Does having multiple RJ45 jacks degrade the Internet signal alot?
On Sat, 21 Jan 2012 08:54:59 -0800, Jeff Liebermann wrote:
Trim the trees. Hi Jeff, Thanks for the suggestions! You're a kind heart. Since the antenna is 16 feet high, I need to research the cost/ versatility of having either a 20 foot (or so) orchard ladder versus a 20 foot (or so) chainsaw-on-a-pole for tree trimming overall. I would think the home-repair guys would know which is best, from a cost/ utility standpoint since many of them probably have one or the other (or both). I can't afford both so I'll have to choose one of the two, always planning more for general use than for the specific one-time application. Polarization Mismatch Loss in dB = 20 log (cos angle) For a 15 degree tilt, that's only 0.3dB. Now that's very interesting! Yes, this tilt is minor, so, all it does, based on your calculation result, is look ugly! Thanks for the edification! What happened to the waterproof direct burial CAT5? I made a big mistake when I first spec'd out this job. I bought 500 feet of uv-outdoor cat5e from Home Depot for $75. Turns out I 'should' have bought about 100 feet of waterproof, and then another 100 feet of interior cat5e. That would have been cheaper, better, and easier! If only I knew then what (you've taught me) I know now! |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Extending multiple BX cables: with multiple bx cables or multiple wires in greenfield? | Home Repair | |||
Not getting signal into RCA jacks on older Sears VCR | Electronics Repair | |||
single ended signal to differential signal? | Electronics Repair | |||
Determining cable tv/internet signal levels | Electronics Repair |