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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Which Brandss of cordless phones most reliable
I am considering buying some new cordless phones with the caller-ID
and answering features. Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? TIA, Bob Hofmann |
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Which Brandss of cordless phones most reliable
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#4
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Which Brandss of cordless phones most reliable
In article
, hr(bob) wrote: Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? If I were to recommend one brand it would be Panasonic. Not only more reliable IMHO but better made and nicer to use. If you were in the UK I'd also say avoid anything branded BT. -- *Prepositions are not words to end sentences with * Dave Plowman London SW To e-mail, change noise into sound. |
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Which Brandss of cordless phones most reliable
Dave Plowman (News) wrote:
If I were to recommend one brand it would be Panasonic. Not only more reliable IMHO but better made and nicer to use. If you were in the UK I'd also say avoid anything branded BT. "British Trash"? -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM |
#6
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Which Brandss of cordless phones most reliable
In article ,
Geoffrey S. Mendelson wrote: Dave Plowman (News) wrote: If I were to recommend one brand it would be Panasonic. Not only more reliable IMHO but better made and nicer to use. If you were in the UK I'd also say avoid anything branded BT. "British Trash"? Heh heh. That's a new one. But British Telecom - the once state owned company that had a monopoly. At one time they designed their own phones which were if nothing else well made. Now they seem to allow their name on any old junk. -- *I have a degree in liberal arts -- do you want fries with that Dave Plowman London SW To e-mail, change noise into sound. |
#7
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Which Brandss of cordless phones most reliable
"hr(bob) " wrote in message ... I am considering buying some new cordless phones with the caller-ID and answering features. Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? **I've owned a few different brands and three Panasonics. ALL the Panas still work. None of the others have survived. I only changed them to new features and better performance. And the latest one is a Hell of a decent performer. I'm looking at the workshop 'phone now. It's in pretty bad cosmetic shape, but the damned thing still works perfectly. It's three years old now and time to upgrade. -- Trevor Wilson www.rageaudio.com.au |
#8
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Which Brandss of cordless phones most reliable
There are other considerations.
More than a year ago, I bought a Uniden system, which immediately irritated me with its poor design and confusing operation. I replaced it with a GE (Thomson) DECT 6.0 system, which was much better thought-out. The controls on the base unit are well-grouped and have different shapes. I never have to refer to the instruction book. The hand units have an excellent speakerphone. Unfortunately, they use shrink-wrapped AAA cells. However, making up a new pack is not out of the question. Don't buy a model where the "base unit" is a hand unit sitting in the charger. There are times when you have to tuck the receiver between your head and neck. You should look for a unit whose base station provides basic functions when the power goes out. "But I have a cell phone." Not if the transmitter also goes down. |
#9
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Which Brandss of cordless phones most reliable
In article ,
Trevor Wilson wrote: "hr(bob) " wrote in message ... I am considering buying some new cordless phones with the caller-ID and answering features. Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? **I've owned a few different brands and three Panasonics. ALL the Panas still work. None of the others have survived. I only changed them to new features and better performance. And the latest one is a Hell of a decent performer. I'm looking at the workshop 'phone now. It's in pretty bad cosmetic shape, but the damned thing still works perfectly. It's three years old now and time to upgrade. Other thing is to phone a knowledgeable friend and ask how your phone sounds to them. Some can be OK at 'your' end but sound horrid to others. Of course difficult to do until you've bought it... -- *Why is "abbreviated" such a long word? Dave Plowman London SW To e-mail, change noise into sound. |
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Which Brandss of cordless phones most reliable
On 31 ago, 22:06, "hr(bob) " wrote:
I am considering buying some new cordless phones with the caller-ID and answering features. *Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? TIA, Bob Hofmann I have had Panasonic, Sony, GE and Siemens cordless phones in the past, and to me, the best of all them are the Panasonic ones, followed by Siemens. Both brands have good features and a very clear sound. |
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Which Brandss of cordless phones most reliable
Hi!
I am considering buying some new cordless phones with the caller-ID and answering features. *Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? I'd cast my vote for Panasonic. I still have an old 49MHz "Easa-Phone" cordless phone that works as well as the day it was made. It's had several new batteries over the years, and one new antenna for the handset. Other than that, it has required no repair. I also have some of their newer cordless phones, covering all of 900MHz, 2.4GHz and 5.8GHz. The 900MHz phones are kitchen phones and see the most use of any of them. They've been dropped, one was rained on overnight and other Bad Things have doubtlessly happened to both of them. Both handsets look slightly rough and one is missing its battery cover, but they're *still* working flawlessly. William |
#12
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Which Brandss of cordless phones most reliable
On Mon, 31 Aug 2009 19:06:45 -0700 (PDT), "hr(bob) "
wrote: I am considering buying some new cordless phones with the caller-ID and answering features. Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? I like Panasonic DECT 6.0 phones: http://www2.panasonic.com/consumer-electronics/shop/Phones-Fax/Telephones/DECT-6-0.list.75070_11002_7000000000000005702 I have one of these (forgot the model numbers) and a mix of older Panasonic 2.4 and 900Mhz phones and fax/answering/cordless phone conglomerations. They work well and much to my amazement, are generally not battery killers. Most of the cordless phone repair I've done is for myself on my thrift shop aquisitions and for friends and neighbors. The phones are cheap enough that repair is not an economical option. Parts are difficult or impossible to find on any of the cordless phones (except batteries, wall warts, and possibly antennas). Also, check into the availability and price of additional handsets. Most bases have a limit of 4 handsets maximum, so be careful when building a large system. The problems are roughly the same with all the phones I've seen. People spit into the keyboard while talking. The saliva eventually migrates into the contact area and makes a mess. Add some dirt and dust to the mix, and the keypad stops working. I open up the handset, clean up the elastometric keypad, clean the contact board, reassemble and it's ready for another few years of use. A good clue on repairability is the presence of case screws. Remove the handset battery and check for screws. If there are none, you may have a unit that is difficult to disassemble and repair. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#13
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Which Brandss of cordless phones most reliable
"Geoffrey S. Mendelson" wrote: 5.7 gHz phones, which are legal in the US, but not EU/Africa/Asia, are shorter range than the others. If that is ok with you (the phones is going to be used in the same room as the base) then it may be a good choice. I can use my Panasonic 5.8 GHZ DECT phones well over 100 feet, and that is with a metal building between me and the base. My old V-tec 900 MHz had a similar range, but with some static. -- You can't have a sense of humor, if you have no sense! |
#14
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Which Brandss of cordless phones most reliable
On Sep 1, 12:12*am, "iws" wrote:
"hr(bob) " wrote in message ... |I am considering buying some new cordless phones with the caller-ID | and answering features. *Besides Consumerrrs Reports, does anyone here | have any experience repairing cordless phones, and which brand(s) do | they consider most reliable and/or repairable? | | TIA, | | Bob Hofmann I doubt any are made to be repaired these days. I would suggest you go for a model that uses individual NiMH batteries as opposed to a custom made battery pack. The batteries not holding a charge are the most frequent problem after a couple of years and the custom battery packs are often nearly the price of a replacement handset. I have had good luck with the Panasonic DECT 6.0 models. You can often get a set of 4 with base answering machine for about $80 on sale. A couple of nice features: talking caller ID for when you can't get to the phone immediately; new message alert flashing light on all the handsets and the ability to actually listen to the message from any handset. Good battery life too unlike a Philips model I tried. I'm into around the second year of use of a Panasonic DECT 6.0. Separate NiMH cells in the handsets. Works fine. Decent range. Decent sound. Good, fast VOX switch on hands-free speaker use. I'd buy another... but hope not to have to! Cheers, Roger |
#15
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Which Brandss of cordless phones most reliable
On Sep 1, 6:13*pm, "Trevor Wilson"
wrote: "hr(bob) " wrote in message ... I am considering buying some new cordless phones with the caller-ID and answering features. *Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? **I've owned a few different brands and three Panasonics. ALL the Panas still work. None of the others have survived. I only changed them to new features and better performance. And the latest one is a Hell of a decent performer. I'm looking at the workshop 'phonenow. It's in pretty bad cosmetic shape, but the damned thing still works perfectly. It's three years old now and time to upgrade. -- Trevor Wilsonwww.rageaudio.com.au please to here if u want to buy phone http://www.global-cell-phones.com/ |
#16
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Which Brandss of cordless phones most reliable
hr(bob) wrote:
I am considering buying some new cordless phones with the caller-ID and answering features. Besides Consumerrrs Reports, does anyone here have any experience repairing cordless phones, and which brand(s) do they consider most reliable and/or repairable? Ok, a bit late in the thread, but: We also have Panasonic DECT now. Good workmanship, long battery life. However, I have drop-outs from handset to base (not the other way around) in my office which is very annoying. Also, they completely screwed up the intercom function. You have to press a three-digit code number, then select the handset you want to call. That's pathetic. Other than that they seem ok but the drop-outs are a problem. The best phone ever was a Cincinnatti Microwave Spread Spectrum phone but unfortunately they quit making them. Does anyone else have such drop-outs in locations with lots of RF reflectors, and maybe an easy fix/hack? -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#17
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Which Brandss of cordless phones most reliable
On Fri, 18 Sep 2009 10:56:09 -0700, Joerg
wrote: Does anyone else have such drop-outs in locations with lots of RF reflectors, and maybe an easy fix/hack? I don't but two of my customers have the problem. They're located directly opposite a downtown Santa Cruz CA rooftop loaded with cellular antennas. When the handsets are anywhere near the window facing the cell site, they drop out. Range is irrelevent as the base unit is in the same office as the handset user. I don't recall the exact models, but one is a 4 phone Panasonic, while the other is a 4 phone Uniden (as probably sold by Costco). The problem is that in the US, the DECT 6.0 phones operate on 1920-1930MHz. PCS cellular base to mobile is next door at 1930-1990Mhz. http://en.wikipedia.org/wiki/Cellular_frequencies http://en.wikipedia.org/wiki/Dect It's the sheer power of the PCS cell site that rips on the DECT 6.0 phones. There's just not enough receiver selectivity and overload tolerance available in the average DECT 6.0 handset to coexist in such an RF environment. The receiver either blocks or hears PCS crud, and it drops out. The best you can do is position yourself away from your local cell sites or switch to 5.7GHz cordless phones. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#18
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Which Brandss of cordless phones most reliable
Jeff Liebermann wrote:
On Fri, 18 Sep 2009 10:56:09 -0700, Joerg wrote: Does anyone else have such drop-outs in locations with lots of RF reflectors, and maybe an easy fix/hack? I don't but two of my customers have the problem. They're located directly opposite a downtown Santa Cruz CA rooftop loaded with cellular antennas. When the handsets are anywhere near the window facing the cell site, they drop out. Range is irrelevent as the base unit is in the same office as the handset user. I don't recall the exact models, but one is a 4 phone Panasonic, while the other is a 4 phone Uniden (as probably sold by Costco). Aha, thanks, now we are getting closer. We have a Panasonic set of three, from BestBuy but similar to the ones they now sell at Costco. I can't imagine them not using the same chip set. It's the comm from handset to base that drops out, base to handset never drops out. The next cell tower is about a mile away though but we are on top of a knoll. The problem is that in the US, the DECT 6.0 phones operate on 1920-1930MHz. PCS cellular base to mobile is next door at 1930-1990Mhz. http://en.wikipedia.org/wiki/Cellular_frequencies http://en.wikipedia.org/wiki/Dect It's the sheer power of the PCS cell site that rips on the DECT 6.0 phones. There's just not enough receiver selectivity and overload tolerance available in the average DECT 6.0 handset to coexist in such an RF environment. The receiver either blocks or hears PCS crud, and it drops out. ... I would assume the base could also be fooled by a signal from a cell phone itself if close enough. Why did they screw up the chip sets so badly? I mean, I can stand right next to a guy with another cell phone at the airport or even inside the metal fuselage of an airplane (after landing) and nothing interferes. Did the DECT guys screw it up? ... The best you can do is position yourself away from your local cell sites or switch to 5.7GHz cordless phones. 5.7GHz doesn't stand a chance in this location. Not enough oomph up there. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#19
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Which Brandss of cordless phones most reliable
On Tue, 22 Sep 2009 08:20:14 -0700, Joerg
wrote: It's the comm from handset to base that drops out, base to handset never drops out. The next cell tower is about a mile away though but we are on top of a knoll. The means the base receiver might be getting clobbered by a cell site. Move the base away from the window and put something substantial (like a wall) in between it and the cell site. Experiments with reflectors. I would assume the base could also be fooled by a signal from a cell phone itself if close enough. Probably not. DECT 6.0 phones operate on 1920-1930MHz. US PCS cellular base to mobile is at 1930-1990Mhz. US PCS cellular mobile to base is at 1850-1910MHz. The handset is at least 20 Mhz away from the PCS receiver, which is sufficiently far away so that a cheap SAW or ceramic filter would work. That's in contrast to the PCS base, which is literally adjacent to the DECT 6.0 frequencies. Why did they screw up the chip sets so badly? The chipsets are fine. It's the lack of RF filtering that's the problem. I haven't looked inside the phone, but my guess is that the RF filtering is fairly minimal. I mean, I can stand right next to a guy with another cell phone at the airport or even inside the metal fuselage of an airplane (after landing) and nothing interferes. Did the DECT guys screw it up? Actually, it does interfere. For GSM, the cell site synchronizes frequencies and TDMA slot times so that they don't directly interfere. With CDMA (spread spectrum), it's not so nice as additional handsets raise the base line noise level. With sufficient noise generated by other handsets, a marginal signal could cause a session disconnect. The good news is that you won't hear any beat notes, intermod, crosstalk, or garble. All that will happen is a dropped call. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#20
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Which Brandss of cordless phones most reliable
Jeff Liebermann wrote:
On Tue, 22 Sep 2009 08:20:14 -0700, Joerg wrote: It's the comm from handset to base that drops out, base to handset never drops out. The next cell tower is about a mile away though but we are on top of a knoll. The means the base receiver might be getting clobbered by a cell site. Move the base away from the window and put something substantial (like a wall) in between it and the cell site. Experiments with reflectors. I would assume the base could also be fooled by a signal from a cell phone itself if close enough. Probably not. DECT 6.0 phones operate on 1920-1930MHz. US PCS cellular base to mobile is at 1930-1990Mhz. Just ran a spectrum. Strong signal at 1930.9MHz. Plus a really fat one at 1901.1MHz. Dang. US PCS cellular mobile to base is at 1850-1910MHz. The handset is at least 20 Mhz away from the PCS receiver, which is sufficiently far away so that a cheap SAW or ceramic filter would work. That's in contrast to the PCS base, which is literally adjacent to the DECT 6.0 frequencies. Yup, looks like it :-( Why did they screw up the chip sets so badly? The chipsets are fine. It's the lack of RF filtering that's the problem. I haven't looked inside the phone, but my guess is that the RF filtering is fairly minimal. I am not at all sure about them being fine. All our previous phones operated in the 2.45GHz band. You could stand right next to the WLAN router while it was cranking some fat PDF file and happily talk it up. No interference. They must have done somthing right. Problem is, all the phones offered around here are now DECT. I mean, I can stand right next to a guy with another cell phone at the airport or even inside the metal fuselage of an airplane (after landing) and nothing interferes. Did the DECT guys screw it up? Actually, it does interfere. For GSM, the cell site synchronizes frequencies and TDMA slot times so that they don't directly interfere. With CDMA (spread spectrum), it's not so nice as additional handsets raise the base line noise level. With sufficient noise generated by other handsets, a marginal signal could cause a session disconnect. The good news is that you won't hear any beat notes, intermod, crosstalk, or garble. All that will happen is a dropped call. I have a CDMA phone (Sprint network) and never had one call dropped. Not inside an airplane nor anywhere else. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#21
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Which Brandss of cordless phones most reliable
P.S.: Just spectrum-analyzed the phone system itself. It operates at
1926.9MHz with about 1.4MHz bandwidth. Needless to say, no pointers in the manual whatsoever on how to move that down in the band a bit :-( But the manual does say not to put heavy objects on top of the phone, in English and in Spanish ... -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |
#22
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Which Brandss of cordless phones most reliable
On 9ÔÂ25ÈÕ, ÉÏÎç3ʱ38·Ö, Joerg wrote:
P.S.: Just spectrum-analyzed the phone system itself. It operates at 1926.9MHz with about 1.4MHz bandwidth. Needless to say, no pointers in the manual whatsoever on how to move that down in the band a bit :-( But the manual does say not to put heavy objects on top of the phone, in English and in Spanish ... -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. http://www.vkamobi.com http://www.handbagtime.com |
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Which Brandss of cordless phones most reliable
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#24
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Which Brandss of cordless phones most reliable
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#25
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Which Brandss of cordless phones most reliable
On Mon, 12 Aug 2013, Michael A. Terrell wrote:
wrote: Well, I am surprised by the positive comments on Panasonic Dect phones. Each of the 5 handsets on my Panasonic system have failed one by one. Now only 3 years after purchase I have to buy another complete set and start over. I will NEVER buy another Panasonic phone. It's all very well having the fancy functions, but not if you can't make or receive a call on it! Trouble is, what to buy that's going to be reliable? Any more reliable than some idiot British Google Groups user who resurrecting a four year old thread? My Panasonic KX-TGA600S phones are over seven years old, and still have the original batteries. They still hold a good charge, and are used almost daily. But the key point, since he resurrected a four year old thread, is whether any of the phones that were discussed are still available. I thought a lot of consumer items were basically one run things, when they run out a new model is issued, if for no other reason than the parts that were in the previous model may not be readily available. Functionally they stay the same, but model numbers and innards may be different. Michael |
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Which Brandss of cordless phones most reliable
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#28
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Which Brandss of cordless phones most reliable
Shaun wrote: Why don't your open up the battery compartment and check to see what kind of batteries are in it. NiMh. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#29
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Which Brandss of cordless phones most reliable
On Tue, 13 Aug 2013, Michael A. Terrell wrote:
Shaun wrote: Why don't your open up the battery compartment and check to see what kind of batteries are in it. NiMh. But I think the point was whether the phone uses a battery pack, or just regular off the shelf AA cells. The former, you either need to put togehter a replacement pack, or buy one, which can be expensive. If the latter, jsut about any AA will work so you have options if there is a problem. There does seem to be a move to regular AA cells (though obviously in the form of nimh), which certainly makes the phones more useful. Michael |
#30
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Which Brandss of cordless phones most reliable
Michael Black wrote: On Tue, 13 Aug 2013, Michael A. Terrell wrote: Shaun wrote: Why don't your open up the battery compartment and check to see what kind of batteries are in it. NiMh. But I think the point was whether the phone uses a battery pack, or just regular off the shelf AA cells. The former, you either need to put togehter a replacement pack, or buy one, which can be expensive. If the latter, just about any AA will work so you have options if there is a problem. if there is a problem, I can always use a different handset. I keep the base and two phones in my bedroom. One on the computer desk, and the other on a charger by my bed. The third phone is near the back door. I paid nothing for these phones. They were given to me used, when a relative decided to drop their landline. They sat in storage for a year before they remembered to give me the box, with the NiMh batteries installed. There does seem to be a move to regular AA cells (though obviously in the form of nimh), which certainly makes the phones more useful. More useful? The phones I have are over seven years old, with the original NiMh packs that are dirt cheap to replace. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#31
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Which Brandss of cordless phones most reliable
"Michael A. Terrell" wrote in message m... Michael Black wrote: On Tue, 13 Aug 2013, Michael A. Terrell wrote: Shaun wrote: Why don't your open up the battery compartment and check to see what kind of batteries are in it. NiMh. But I think the point was whether the phone uses a battery pack, or just regular off the shelf AA cells. The former, you either need to put togehter a replacement pack, or buy one, which can be expensive. If the latter, just about any AA will work so you have options if there is a problem. if there is a problem, I can always use a different handset. I keep the base and two phones in my bedroom. One on the computer desk, and the other on a charger by my bed. The third phone is near the back door. I paid nothing for these phones. They were given to me used, when a relative decided to drop their landline. They sat in storage for a year before they remembered to give me the box, with the NiMh batteries installed. There does seem to be a move to regular AA cells (though obviously in the form of nimh), which certainly makes the phones more useful. More useful? The phones I have are over seven years old, with the original NiMh packs that are dirt cheap to replace. They are dirt cheap wonder boy IF you go to a dedicated battery store and get the cells or have them make a new pack for you their. If you go to a regular department store you'll pay an arm and a leg for the batteries. The prices are so bad at regular store you might as well buy new phones! Shaun -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#32
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Which Brandss of cordless phones most reliable
Shaun wrote: They are dirt cheap wonder boy IF you go to a dedicated battery store and get the cells or have them make a new pack for you their. If you go to a regular department store you'll pay an arm and a leg for the batteries. The prices are so bad at regular store you might as well buy new phones! Who pays retail for batteries, if they repair electronics? The Panasonic batteries were under $4 a set, the last time I looked into the cost. The Uniden phones I had on the other phone line died before their batteries, and they were cheap Nicad packs that sell for under $3. BTW, ar there 'Irregular department stores'? Where do all of you knuckle dragging fools come from? I hope you aren't the dumbass 'Shaun' I worked with in Cincinnati, in the mid '80s. OTOH that's highly unlikely, since he should be dead of alcohol poisioning by now. What have you ever done in electronics, other than hang around 'Regular department stores'? -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#33
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Which Brandss of cordless phones most reliable
"Michael A. Terrell" wrote in message m... Shaun wrote: They are dirt cheap wonder boy IF you go to a dedicated battery store and get the cells or have them make a new pack for you their. If you go to a regular department store you'll pay an arm and a leg for the batteries. The prices are so bad at regular store you might as well buy new phones! Who pays retail for batteries, if they repair electronics? The Panasonic batteries were under $4 a set, the last time I looked into the cost. The Uniden phones I had on the other phone line died before their batteries, and they were cheap Nicad packs that sell for under $3. BTW, ar there 'Irregular department stores'? Where do all of you knuckle dragging fools come from? I hope you aren't the dumbass 'Shaun' I worked with in Cincinnati, in the mid '80s. OTOH that's highly unlikely, since he should be dead of alcohol poisioning by now. What have you ever done in electronics, other than hang around 'Regular department stores'? I have Two College Diplomas, one In Electronic Technology and the other in Biomedical Technology. I Certified as an Engineering Technologist in my Country. I have an Advanced amateur Radio License just because. I have worked in a Hospital for 15 years testing and repairing Medical Electronics - it was a one Man shop. I have worked at repairing industrial electronics and doing calibrations of different types of meters for 4 years. I have built a medium sized Tesla Coil that makes 4 to 5 foot sparks in all directions. I build my own computers and fix computers. Shaun -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#34
Posted to sci.electronics.repair
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Which Brandss of cordless phones most reliable
On 2013-08-17, Shaun wrote:
I build my own computers and fix computers. Not that big a deal these days. Back in the late 1940s/early 1950s it was indeed a big deal to build a computer: http://www.telegraph.co.uk/technolog...puter-age.html http://www.leo-computers.org.uk/ -- ----------------------------------------------------------------------------- Roger Blake (Change "invalid" to "com" for email. Google Groups killfiled.) "Climate policy has almost nothing to do anymore with environmental protection... the next world climate summit in Cancun is actually an economy summit during which the distribution of the world's resources will be negotiated." -- Ottmar Edenhofer, IPCC ----------------------------------------------------------------------------- |
#35
Posted to sci.electronics.repair
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Which Brandss of cordless phones most reliable
Shaun wrote: "Michael A. Terrell" wrote in message m... Shaun wrote: They are dirt cheap wonder boy IF you go to a dedicated battery store and get the cells or have them make a new pack for you their. If you go to a regular department store you'll pay an arm and a leg for the batteries. The prices are so bad at regular store you might as well buy new phones! Who pays retail for batteries, if they repair electronics? The Panasonic batteries were under $4 a set, the last time I looked into the cost. The Uniden phones I had on the other phone line died before their batteries, and they were cheap Nicad packs that sell for under $3. BTW, ar there 'Irregular department stores'? Where do all of you knuckle dragging fools come from? I hope you aren't the dumbass 'Shaun' I worked with in Cincinnati, in the mid '80s. OTOH that's highly unlikely, since he should be dead of alcohol poisioning by now. What have you ever done in electronics, other than hang around 'Regular department stores'? I have Two College Diplomas, one In Electronic Technology and the other in Biomedical Technology. I Certified as an Engineering Technologist in my Country. I have an Advanced amateur Radio License just because. I have worked in a Hospital for 15 years testing and repairing Medical Electronics - it was a one Man shop. Good for you. I started repairing electronics in 1965. Back when the entire RCA replacement transistor line was germanium transistors, and the cross reference was the size of a small movie poster, or a fold up price chart for tube prices. At the end of my time in manufacturing, I was hand soldering ICs with leads spaced .015" center to center under a stereo microscope and doing a better job than the brand new Heller reflow oven. I have worked at repairing industrial electronics and doing calibrations of different types of meters for 4 years. Yawn, I built Telemetry equipment for the Aerospace industry for four years. I also worked as an engineering tech, did failure analysis and worked in the cal lab. Some of my design work went into orbit as part of the ISS, and I was a broadcast at three TV stations from the early '70s to the late '90s. I have a letter of commendation from the US Army for work I did at a station in Alaska. I never bothered with a ham license, since most of the hams I knew were lids. Too stupid to solder a mic plug, or wire a straight key to a 1'4" plug. They would blow up their rigs, and I would repair them. I have built a medium sized Tesla Coil that makes 4 to 5 foot sparks in all directions. Built one bigger than that in 1969. Anyone who can read and chew gum at the same time can wind the output coil for a Tesla coil. I built a two meter repeater on 146.01/61 MHz for my school's ham radio club. One of the TV stations I worked at was an empty building before I laid out the equipment room, installed the transmitter and processing racks. That was a 1952 model TTU-25B UHF TV transmitter on Ch. 58 that was built by RCA. Parts were no longer available from RCA, since they were out of the broadcast business. That only made the job slightly harder, since there had been no new final tubes made for about 20 years, and no company had managed to rebuild one that could put out anywhere near the rated power. Nice water cooled stainless steel jugs with 7 KVDC across the coolant. Twin 1000A 1.5V filaments that had to be balanced by stretching copper bussbars used as variable resistors. I build my own computers and fix computers. Anyone with a screwdriver & box of parts can assemble a computer. Let me know when you design your own from scratch. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#36
Posted to sci.electronics.repair
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Which Brandss of cordless phones most reliable
"Michael A. Terrell" wrote in message m... Shaun wrote: "Michael A. Terrell" wrote in message m... Shaun wrote: They are dirt cheap wonder boy IF you go to a dedicated battery store and get the cells or have them make a new pack for you their. If you go to a regular department store you'll pay an arm and a leg for the batteries. The prices are so bad at regular store you might as well buy new phones! Who pays retail for batteries, if they repair electronics? The Panasonic batteries were under $4 a set, the last time I looked into the cost. The Uniden phones I had on the other phone line died before their batteries, and they were cheap Nicad packs that sell for under $3. BTW, ar there 'Irregular department stores'? Where do all of you knuckle dragging fools come from? I hope you aren't the dumbass 'Shaun' I worked with in Cincinnati, in the mid '80s. OTOH that's highly unlikely, since he should be dead of alcohol poisioning by now. What have you ever done in electronics, other than hang around 'Regular department stores'? I have Two College Diplomas, one In Electronic Technology and the other in Biomedical Technology. I Certified as an Engineering Technologist in my Country. I have an Advanced amateur Radio License just because. I have worked in a Hospital for 15 years testing and repairing Medical Electronics - it was a one Man shop. Good for you. I started repairing electronics in 1965. Back when the entire RCA replacement transistor line was germanium transistors, and the cross reference was the size of a small movie poster, or a fold up price chart for tube prices. At the end of my time in manufacturing, I was hand soldering ICs with leads spaced .015" center to center under a stereo microscope and doing a better job than the brand new Heller reflow oven. My God..... you must be really old!! Germanium transistors... I've replaced a few of those. I've never had to work with a microscope, I guess you needed it to see your dick. That reflow oven wasn't set up right or you werent using enough flux!. It should look the same a skilled hand soldering. I have worked at repairing industrial electronics and doing calibrations of different types of meters for 4 years. Yawn, I built Telemetry equipment for the Aerospace industry for four years. I also worked as an engineering tech, did failure analysis and worked in the cal lab. Some of my design work went into orbit as part of the ISS, and I was a broadcast at three TV stations from the early '70s to the late '90s. I have a letter of commendation from the US Army for work I did at a station in Alaska. I never bothered with a ham license, since most of the hams I knew were lids. Too stupid to solder a mic plug, or wire a straight key to a 1'4" plug. They would blow up their rigs, and I would repair them. I've built a repeater controller in College for my final project. It sent out morse code ID, it had voice and you could change the way it operated with a DTMF pad on a radio tuned to the I/P frequency. It was pretty fancy for a college project. I have built a medium sized Tesla Coil that makes 4 to 5 foot sparks in all directions. Built one bigger than that in 1969. Anyone who can read and chew gum at the same time can wind the output coil for a Tesla coil. I doubt yours would have preformed that well. There is a LOT more to it than that. There are a lot of calculations to determine the secondary resonant frequency, primary frequency range, mutual inductance, coupling, matching the step up transformer to the capacitor size so that you get the most power output; stuff like that. Otherwise it is hit or miss and you may tune the tesla coil to work on a harmonic which results in lower power output and improper tuning. My output coil is wound on 4.0 inch white PVC tubing, thin wall which is ideal. I sanded in inside and outside, cleaned it with alcohol and let it dry while blowing hot air threw it. Coated the inside and outside on the PVC tube with 2 or 3 coats of polyurethane to seal it. I put the coated tube in the freezer so it would shrink, then I wound the coil, no kinks, no overlaps, no spaces between turns, about 1200 turns of 26 gauge magnet wire. Then over the course of two weeks I coated it 12 times with polyurethane while it was slowly turning and I'd sand away any air bubbles that I saw. It worked very well. Shaun I built a two meter repeater on 146.01/61 MHz for my school's ham radio club. One of the TV stations I worked at was an empty building before I laid out the equipment room, installed the transmitter and processing racks. That was a 1952 model TTU-25B UHF TV transmitter on Ch. 58 that was built by RCA. Parts were no longer available from RCA, since they were out of the broadcast business. That only made the job slightly harder, since there had been no new final tubes made for about 20 years, and no company had managed to rebuild one that could put out anywhere near the rated power. Nice water cooled stainless steel jugs with 7 KVDC across the coolant. Twin 1000A 1.5V filaments that had to be balanced by stretching copper bussbars used as variable resistors. I build my own computers and fix computers. Anyone with a screwdriver & box of parts can assemble a computer. Let me know when you design your own from scratch. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
#37
Posted to sci.electronics.repair
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Which Brandss of cordless phones most reliable
On 08/23/2013 05:33 PM, Shaun wrote:
"Michael A. Terrell" wrote in message I built a two meter repeater on 146.01/61 MHz for my school's ham radio club. One of the TV stations I worked at was an empty building before I laid out the equipment room, installed the transmitter and processing racks. That was a 1952 model TTU-25B UHF TV transmitter on Ch. 58 that was built by RCA. Parts were no longer available from RCA, since they were out of the broadcast business. That only made the job slightly harder, since there had been no new final tubes made for about 20 years, and no company had managed to rebuild one that could put out anywhere near the rated power. Nice water cooled stainless steel jugs with 7 KVDC across the coolant. Twin 1000A 1.5V filaments that had to be balanced by stretching copper bussbars used as variable resistors. Didn't Comark (division of Thomson Multimedia) service RCA customers well into the 1990s? When I went to IOT school in 1995 they still sold RCA renewal parts. Comark bought RCA (including the rights to Nipper). Now they are both part of Thales, a French defense contractor. |
#38
Posted to sci.electronics.repair
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Which Brandss of cordless phones most reliable
dave wrote: On 08/23/2013 05:33 PM, Shaun wrote: "Michael A. Terrell" wrote in message I built a two meter repeater on 146.01/61 MHz for my school's ham radio club. One of the TV stations I worked at was an empty building before I laid out the equipment room, installed the transmitter and processing racks. That was a 1952 model TTU-25B UHF TV transmitter on Ch. 58 that was built by RCA. Parts were no longer available from RCA, since they were out of the broadcast business. That only made the job slightly harder, since there had been no new final tubes made for about 20 years, and no company had managed to rebuild one that could put out anywhere near the rated power. Nice water cooled stainless steel jugs with 7 KVDC across the coolant. Twin 1000A 1.5V filaments that had to be balanced by stretching copper bussbars used as variable resistors. Didn't Comark (division of Thomson Multimedia) service RCA customers well into the 1990s? When I went to IOT school in 1995 they still sold RCA renewal parts. Comark bought RCA (including the rights to Nipper). Now they are both part of Thales, a French defense contractor. They still sold some custom uncased silver mica caps that were used as coupling capacitors for the 4CX250 drivers, but not much else. The custom made final tubes were made by their transmitting tube division, and when RCA shut it down, they destroyed all the design and assembly information. One of the old RCA Transmitting Tube manuals had a simplified schematic, and the data sheets for the 12.5 & 25 KW UHF water cooled power tetrodes. The transmitters were considered obsolete and EOL, so parts that were designed strictly for that model were NLA. That custom Mica cap was used in some RCA FM transmitters that used the same basic chassis as the aural stage of the TTU-1 and TTU-25 series TV transmitters. Why keep making parts for a transmitter that was considered too low power for new builds? The two final tubes were designed for that one series of transmitters. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |
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