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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Coax and telephone question
Do you know anythign abotu how far telephone and coax can be ran? I
have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? |
#2
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Coax and telephone question
stryped wrote:
Do you know anythign abotu how far telephone and coax can be ran? I have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? If the telephone wires will be buried they have to be jell filled or water will get in and even though the insulation is OK the change in capacitance will probably kill the signal. The distance will be OK as long as the distance to the telephone office is not marginal. Bill K7NOM |
#3
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Coax and telephone question
On Nov 6, 9:05*am, Bill Janssen wrote:
stryped wrote: Do you know anythign abotu how far telephone and coax can be ran? I have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? If the telephone wires will be buried they have to be jell filled or water will get in and even though the *insulation is OK the change in capacitance will probably kill the signal. The distance will be OK as long as the distance to the telephone office is not marginal. Bill K7NOM Just connect the length of wire and coax you are going to use and see if they work! Leave them coiled up. Don't have to run them out to see if they will work! Paul, KD7HB |
#4
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Coax and telephone question
On Nov 6, 12:12*pm, " wrote:
On Nov 6, 9:05*am, Bill Janssen wrote: stryped wrote: Do you know anythign abotu how far telephone and coax can be ran? I have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? If the telephone wires will be buried they have to be jell filled or water will get in and even though the *insulation is OK the change in capacitance will probably kill the signal. The distance will be OK as long as the distance to the telephone office is not marginal. Bill K7NOM Just connect the length of wire and coax you are going to use and see if they work! Leave them coiled up. Don't have to run them out to see if they will work! Paul, KD7HB Telephone wire can go for many miles, yours probably does already on the poles. RG-6 coax loses about 3/4 of the upper channels' signal strength and half of the lower ones' per hundred feet. ( Cliffstromath, or Infinite Implausibility Drivel ) Before spendiing on the coax you could test for good reception of the weaker signal with splitters, a 2-way cuts the strength signal in half, a 4-way to 1/4. The unused outputs need terminators. jsw |
#5
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Coax and telephone question
On Fri, 6 Nov 2009 07:20:34 -0800 (PST), stryped
wrote: Do you know anythign abotu how far telephone and coax can be ran? I have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? First, try to keep the conduits for the phone and TV as far from the power conduit in the common trench as you can, laterally or vertically. 6" if you must,12" is enough, over18" is overkill. If they are too close and running parallel for long distances, the power lines can inductively couple over and give you hum problems on the phone lines, and mess up the video and computers. This is why power lines are 4 to 6 feet below Power on the pole. (Well, that and to leave room so dumb Phone linemen aren't sticking their heads into the power lines... Been there, Saw that happen once, and the end results {Darwin Award} were not at ALL pretty...) And {$Deity} forbid you get a lightning strike on the power lines, you don't want THOSE currents induced on the Phone or TV. Matter of fact, haveing lightning arresters on the phone and TV where they hit the shed is a good thing, and a local ground rod or two for the shop building. Tie the ground rods at house and shop together with the power line ground wire, and don't scrimp. You don't want different ground potentials at opposite ends of the line, that can be real bad. Make the conduits big enough to Future-Proof them - 1" minimum, 1-1/2" or 2" is better. And leave a spare pipe for the stuff they haven't even dreamed up yet, or to pull through a new cable before pulling out one of the old ones that is failing. Telephone has no hard distance limits, but if you were going over 300' or so I'd bump up from the usual 24-gauge to 22-gauge. If it was 1000' or more, I'd go 19-gauge... And if you are already miles away from the main Switchroom, you might have to bump it up to keep the Shop phone legible - that 18,000 feet of phone cable getting to your house counts in the total voltage drop too, that's where the -48V supply and the dialtone comes from. The gel-filled 3-pair underground phone drop wire is about 3/8" OD, and the gopher-armored direct burial stuff is pushing 3/4" OD. You don't need the armored, but if that's all you can get in-stock locally you want it to fit inside the pipe... A 5/8" or 3/4" OD cable is NOT going inside 1/2" trade size PVC period, and with 3/4" PVC you are cutting it way too close, the sweep bends tend to oval out a little. Might go in once with a grand Tug-Of-War, and never come out again... Get the sheath bonding clamps when you get the underground phone wire, and use them. The metal armor sheath in the phone cable needs to be bonded and grounded to the lightning arrestors at both ends. And if you want computer networking in the Shop, they do make the same underground phone cable dual-rated as CAT-5 or 5E or6 - Run a Seperate Networking Cable, don't try to double up with the phones. You can sometimes get away with it, but never count on it... The limit between points on a Twisted-pair Ethernet network is about 300', which will work fine - you might want to put a full Hub out in the shop to act as a repeater. Or convert to Fiber with a Media Converter Hub at both ends, and pull through a 12-fiber cable to the Shop. The Fiber Networking uses one fiber for Tx/Rx each direction, which will give you 10 spares that you can later convert to CATV or Security CCTV, or other uses... And they make filled underground RG-11 TV coax too, the Cable Companies use it for service drops. Again, the local big electrical wholesale houses should stock it. -- Bruce -- |
#6
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Coax and telephone question
Jim Wilkins wrote:
On Nov 6, 12:12 pm, " wrote: On Nov 6, 9:05 am, Bill Janssen wrote: stryped wrote: Do you know anythign abotu how far telephone and coax can be ran? I have two options. 1st, run another conduit down the outside wall of the garage beside the one I will run for power and bring both phone and coax up through the garage wall and down into the trench in separat conduit with the power. Run would be roughly 140 feet. Also, I will have to run water at the end of the house. (It is in the video the long winding route between the tree and field lines to the back of the house.) I can run it in this ditch to the crawspace. Distance would be roughly 190 feet but an easier install becasue of not having to fish it inside the garage wall. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. What do you think? If the telephone wires will be buried they have to be jell filled or water will get in and even though the insulation is OK the change in capacitance will probably kill the signal. The distance will be OK as long as the distance to the telephone office is not marginal. Bill K7NOM Just connect the length of wire and coax you are going to use and see if they work! Leave them coiled up. Don't have to run them out to see if they will work! Paul, KD7HB Telephone wire can go for many miles, yours probably does already on the poles. RG-6 coax loses about 3/4 of the upper channels' signal strength and half of the lower ones' per hundred feet. ( Cliffstromath, or Infinite Implausibility Drivel ) Before spendiing on the coax you could test for good reception of the weaker signal with splitters, a 2-way cuts the strength signal in half, a 4-way to 1/4. The unused outputs need terminators. jsw Then in a few years you will be able to tear the coax back out when the FCC kills all broadcast TV. That is what the current people in charge want to do. These are the same ones who also pushed for the digital conversion boxes and "rebates" for them. From The Wall Street Journal FCC Considers Shifting Some TV Airwaves to Broadband By AMY SCHATZ WASHINGTON—Federal regulators are considering taking back some airwaves from television broadcasters and auctioning them off to wireless companies to increase the availability of wireless broadband services. Federal Communications Commission Chairman Julius Genachowski has warned that the U.S. doesn't have enough airwaves set aside for wireless broadband service in the future, and the agency is looking at a variety of ways to remedy that shortage. "The record is very clear that we're facing a looming spectrum gap," said Blair Levin, a former telecom analyst who is in charge of crafting the FCC's national broadband plan, which is expected to lay out a variety of things the U.S. can do to increase broadband availability and usage. The plan will be released in February. It's not clear if the proposal will actually make it into the FCC's final plan. At this stage, FCC officials are mostly trying to get input from broadcasters and others. Station owners are likely to fight the plan, although the FCC is envisioning paying broadcasters for any airwaves that are taken away. The agency is "looking at everything, including broadcasting" airwaves, Mr. Levin said. The National Association of Broadcasters "believes it is imperative that policy makers explore spectrum efficiency choices that don't limit consumer access to the full potential of digital broadcasting," said spokesman Dennis Wharton. On Friday, the Consumer Electronics Association released a study it commissioned on the value of the large chunk of airwaves set aside for TV broadcasters. If the FCC took back all of those airwaves and auctioned them off, the government could make up to $62 billion, the study found. Such an approach would cost about $12 billion in payments to broadcasters and about $9 billion to "migrate all households that rely on over-the-air broadcasts to subscription services," the study found. The political will to take such an approach could be weak, however, because the federal government just spent $2.15 billion over the last two years to help consumers move to digital-only broadcast television. Consumers who rely on free TV now might also take a dim view of being asked to subscribe to cable or satellite television,. Many of them just had to go through the trouble of either buying new digital TVs or hooking up digital converter boxes to their old TVs to keep them working. The FCC isn't looking at taking away all of the broadcasters' airwaves. Instead, FCC officials are focusing on the benefits of taking back a portion of the airwaves set aside for digital TV broadcasts and auctioning those off to wireless companies that want to offer more wireless Internet services. It's not clear yet how much of the airwaves they might suggest taking back. Some broadcast-station owners are already expressing concern about the idea. They want to keep those airwaves for themselves. Many broadcasters would like wireless phones and other gadgets to come equipped with receivers that would allow consumers to watch digital TV. "CEA's study ignores the immeasurable public benefit of a vibrant free and local broadcasting system that is ubiquitous, reliable as a lifeline service in times of emergency, and flexible enough to include HDTV, diverse multicast programming and mobile DTV," said Mr. Wharton, the broadcasters' spokesman. -- Steve W. |
#7
Posted to rec.crafts.metalworking
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Coax and telephone question
stryped wrote:
Do you know anythign abotu how far telephone and coax can be ran? I have two options. The phone will be a plain phone. The coax will be connected to my rooftop antenna on the house for local tv stations and also will be connected to an interior dish network sat box so I can watch whatever the sat box is tuned to. The phone wires run MILES from the CO to your house. My phone run is currently 18000 feet. So, your additional 140' will be a minute addition. The TV cable from a converter or other inside source will be plenty strong, but trying to pipe signals received from a broadcast antenna over a long cable may not work as well. You can get extra low-loss coax if you need it. Jon |
#8
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Coax and telephone question
On Nov 6, 3:54*pm, Jon Elson wrote:
The TV cable from a converter or other inside source will be plenty strong, but trying to pipe signals received from a broadcast antenna over a long cable may not work as well. *You can get extra low-loss coax if you need it. Jon Has anyone here had good results on DTV with a mast-top or indoor amplifier? jsw |
#9
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Coax and telephone question
On Fri, 6 Nov 2009 14:30:12 -0800 (PST), Jim Wilkins
wrote: Has anyone here had good results on DTV with a mast-top or indoor amplifier? I got quite a bit of improvement with a mast mounted amp, but we're still getting a few dropouts and occasionally some channels are unwatchable. This is the amp. It's in the attic on the largest antenna that can swing on a rotator in the space available. Overall, our reception is somewhat better than predicted by antennaweb. http://www.a1components.com/itemdisplayn.aspx?item=1076 -- Ned Simmons |
#11
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Coax and telephone question
Jim Wilkins writes:
On Nov 6, 3:54=A0pm, Jon Elson wrote: The TV cable from a converter or other inside source will be plenty strong, but trying to pipe signals received from a broadcast antenna over a long cable may not work as well. =A0You can get extra low-loss coax if you need it. Jon Has anyone here had good results on DTV with a mast-top or indoor amplifier? DTV is RF just the same as NTSC. But note that preamps are not the same as distribution amps. And in general, you are better off with a bigger antenna. -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
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