|
can anyone explain this to me ?
|
Well Capt - it is an auction
The bid started at $19.95 The bidders perceive value here (not you I suspect) (Or I for that matter) but what do we know? So the current bid is $630 It is called free enterprise Don't ya luv it? You really don't want price fixing -- do you? -- KeyBoard In The Wilderness wrote in message oups.com... http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 |
Collectors have a whole different set of reasons for buying a radio
than users. Compare the price for that radio with the $600.00 for an FRG-7, $800.00 for a Sony 6800, $3,000 for a SonyCRF320 or $800.00 for a Zenith TO. Prices no user would contemplate, but several collectors would not blink twice at. The Sony you mentioned was one of many luggable radios in it's time. It probably priced out lower than but was meant to compete as a reasonably priced alternative to the Panasonic Rf-5000a, Zenith TO, Nordmende & Grundig offerings. All were reasonable performing radios in their time with notably pleasant audio - much mellower than anything found today. In all cases time will have taken a toll on their electronics and there's a good chance controls will be noisy, dial accuracy will be frustrating, plastic started to fade, etc. For my purposes the Sony would be fun to use for a while, but that's about it. That there have been 32 bids to date tells me there's more than one collector that have a different view. wrote: http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 |
But,but,but it's 'Made In Japan" Now,that makes it 'Special' don't y'all
just know :{) I have umpteen hundred 'Made In Japan" radios here.Geeez,boys and girls,I must be sitting on a billion dollars worth of 'Made In Japan' radios and when I was in Tokio on our eight hour layover on my way to over yonder,I 'Made' a few 'Made In Japan' wimmins. cuhulin |
I have a few old radios similar to that one.It is true about some of the
electronic parts in radios degrading in performance over the years.I wonder why? Moisture in the air gradually getting into the parts and degrading them? I have been collecting old radios since I was a kid,most of them aren't anything special though.Whenever I would see a radio at junk shops,fleamarkets,thrift stores and wherever,if it's a radio I liked and the price was right I would buy it whether it worked or not.I own a lot of old tube type radios and transistor radios.Some of them do not work at all,some of them sort of work and some of them work ok. cuhulin |
Vacuum tubes generate heat -- components abhor heat and die
Capacitors have wet gooey stuff in em and dry out. My solid state TV (less CRT) has been on every day for 15+ years no heat no die Then there may be fungus amongst us (;-) Rodents love paper parts. And my damn dawg will eat anything including chewy cables. -- KeyBoard In The Wilderness wrote in message ... I have a few old radios similar to that one.It is true about some of the electronic parts in radios degrading in performance over the years.I wonder why? Moisture in the air gradually getting into the parts and degrading them? I have been collecting old radios since I was a kid,most of them aren't anything special though.Whenever I would see a radio at junk shops,fleamarkets,thrift stores and wherever,if it's a radio I liked and the price was right I would buy it whether it worked or not.I own a lot of old tube type radios and transistor radios.Some of them do not work at all,some of them sort of work and some of them work ok. cuhulin |
wrote in message oups.com... http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 Why yes Capt. I would love to explain this to you. This is what we on Earth call a radio. It is designed to receive radio signals. Radio signals bring news and entertainment to all corners of the planet and are transmitted by radio stations. Hope this helps. Take care. B.H. |
My wife and son are both E.E.'s and their explanation is that IC's
begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. wrote: I have a few old radios similar to that one.It is true about some of the electronic parts in radios degrading in performance over the years.I wonder why? Moisture in the air gradually getting into the parts and degrading them? I have been collecting old radios since I was a kid,most of them aren't anything special though.Whenever I would see a radio at junk shops,fleamarkets,thrift stores and wherever,if it's a radio I liked and the price was right I would buy it whether it worked or not.I own a lot of old tube type radios and transistor radios.Some of them do not work at all,some of them sort of work and some of them work ok. cuhulin |
In April of 2003 I bought a 1948 Willys Jeep from a guy who lives in
Edwards,Mississippi about 13 miles due West of me.The Jeep has an old Jack & Heintz electric winch mounted on the front of the Jeep.The guys big dog had chewed completly through both of those big cables on the winch. cuhulin |
|
wrote: wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. Do a net search on "eletro-migration". Over time the electrons carry some of the ions that make junctions either P or N. Electro-migration increases with heat, I think it doubles for every 3C degree increase. This is why overclocking CPUs cn lead to unexpected failures. Terry JS That's good information. And it's not too surprising that IC's are temperature sensitive since we use heat sinks and fans to dissipate heat. Could also be why some of the Radio Shack Pro scanners tended to die early deaths when a faster crystal was added. |
In article .com,
says... http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 Interesting price. Remember ?? a couple of months back I posted an inquiry saying I found one of these in working conditon on a back shelf in the stock room at work...did anyone have any doc's to assist my restoration ?? The radio is currently in service in our undergrad analog circuits lab so the students can listen to something more interesting than top 40's when they're in there after hours trying to finish up. It still needs an unkludged bandswitch knob, and I'd love to have a copy of the alinement data. |
wrote in message ups.com... wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. Do a net search on "eletro-migration". Over time the electrons carry some of the ions that make junctions either P or N. Electro-migration increases with heat, I think it doubles for every 3C degree increase. This is why overclocking CPUs cn lead to unexpected failures. So, does that mean it might not be a bad idea to do some restoration work (or have it done) on the newer radios when they reach 20 years or so, sort of like the older tube radios?? I imagine that the caps last longer than the old paper caps or black beauties, but fixing up an R-70 or an FRG-7700 (if in otherwise decent shape) hadn't occured to me before. --Mike L. |
I guess it all depends on the age of the radio(s) and how much they need
restoring and how much one wants to spend.We have some Very stormy weather here right now (Jackson,Mississippi) with straight line winds and at 3:55 PM this afternoon,I thought that gust of wind was going to blow my house over. www.wapt.com is the best tv station here for constant stormy weather reports.There isn't anything that scares me worst than tornados.Emergency vehicles have been going along Highway 80 since not long after daybreak this morning and they are still going right now. cuhulin |
I've had two Sony CRF-5100s in my time. The first I bought was from a school
rummage sale about 15 years ago for $8. Another was from a hamfest a few years ago for $85. Neither was terribly impressive and I sold them for roughly what I had in them. "BDK" wrote in message ... A friend's dad had a huge collection of receivers from the late 50's until he died in 1981, and this was one of the portables. The Sony wasn't great when it was new, let alone now... |
Michael Lawson wrote:
wrote in message ups.com... wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. Do a net search on "eletro-migration". Over time the electrons carry some of the ions that make junctions either P or N. Electro-migration increases with heat, I think it doubles for every 3C degree increase. This is why overclocking CPUs cn lead to unexpected failures. So, does that mean it might not be a bad idea to do some restoration work (or have it done) on the newer radios when they reach 20 years or so, sort of like the older tube radios?? I imagine that the caps last longer than the old paper caps or black beauties, but fixing up an R-70 or an FRG-7700 (if in otherwise decent shape) hadn't occured to me before. You can't restore ICs, of course, but you can replace auxilary transistors, capacitors, resistors, etc. I know that some of the older transistorized clock radios (the ones made in Japan prior to the microchip age) tended to have the radio die gradually over time. This happened prior to the motor which flipped the numbers dying. I know that happened to an old 1971 Juliette which was my first radio. The radio gradually got weaker and weaker and finally went silent, then the numbers stopped turning. Those clock radios were pretty cheaply made and were not worth restoring, but a tabletop SW radio like a 7700 would definitely be worth restoring if it was otherwise pretty good. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
wrote:
Collectors have a whole different set of reasons for buying a radio than users. Compare the price for that radio with the $600.00 for an FRG-7, $800.00 for a Sony 6800, $3,000 for a SonyCRF320 or $800.00 for a Zenith TO. Prices no user would contemplate, but several collectors would not blink twice at. The Sony you mentioned was one of many luggable radios in it's time. It probably priced out lower than but was meant to compete as a reasonably priced alternative to the Panasonic Rf-5000a, Zenith TO, Nordmende & Grundig offerings. All were reasonable performing radios in their time with notably pleasant audio - much mellower than anything found today. In all cases time will have taken a toll on their electronics and there's a good chance controls will be noisy, dial accuracy will be frustrating, plastic started to fade, etc. For my purposes the Sony would be fun to use for a while, but that's about it. That there have been 32 bids to date tells me there's more than one collector that have a different view. wrote: http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 Don't forget the GE World Monitor, another competitor in the TO type radio derby of the 60s. I have an early version of the World Monitor, a P990C that my grandfather bought new in 1964. He bought it for the FM band, this at a time when most small transistor radios were MW only. He paid $100 for it, which was a lot of money in 1964. It still works well, and has the original AC adaptor (he used it in his auto repair shop). I could probably get $800 for it on ebay, not that I would risk the wrath of my grandfather by doing so. Note that the seller has amended his auction to argue that the Sony is worth $400. He originally put it up for $19.95. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
|
For a well designed integrated circuit, the most likely thing to fail
is the package, which in turn leads to failure in the bonding. Consumer grade electronics use porous plastic packages, while the military forks out for ceramic. It is possible to get ion contaminator from how the wafers were handled (such as a moron touching the edge), but the associated threshold shifts show up very soon. I'm not sure if you can find this on the net, but all the IC companies do some sort of die seal to reduce this problem. I'd blame the capacitors, especially tantalum. Resistors should be stable. Regarding electromigration, this is also well understood and compensated for in the design process. I can tell you that most chips coming to a failure analysis lab are damaged by electrical overstress. Often a power surge will shoot right through the power supply and zap some chip. [Some radios are "always on" if hooked up to the AC mains, so a radio that is off can get zapped.] Second comes latch-up related problems, not exactly the fault of the chip, i.e. all chips using reverse biased diode isolation will latch under some external conditions. |
wrote in message ups.com... wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. I'm not an EE, but I do fix electronics as a hobby. In my experience, degraded (but not totally dead) ICs or transistors are among the least likely failures and failed semiconductors are almost always caused by exposure to excess voltage such as static discharge or funky power supplies, reversed voltage or drawing excess current through them. Spilled liquids can be a menace. Bigger problems are poor solder joints, dried up electrolytics, cracked circuit boards, drifted carbon composition resistors and home handyman alignments. If you're looking for esoteric failure modes, don't forget tin whiskers. Tin plated conductors, such as the leads on most IC packs, can grow fine whiskers from the tin plated leads which might short out adjacent pins. The most likely parts to fail on tube radios are paper capacitors, electrolytic capacitors and carbon comp resistors. Tubes age as well, but they're usually OK. Frank Dresser |
Yes, for many electronic appliances it ultimately comes down to a
cost-to-repair vs cost-to-replace comparison. And since the relative price of most new electronic goods continues to drop many older electronic appliances become disposable. I remember my parents taking household appliances like a tube-powered clock radio or a mixer in for repair. Today if the appliance dies it is just replaced. I'm trying to think of where a TV, Radio or small appliance repair shop might be in my area, but I'm drawing a complete blank. Times have changed. running dogg wrote: Michael Lawson wrote: wrote in message ups.com... wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. Do a net search on "eletro-migration". Over time the electrons carry some of the ions that make junctions either P or N. Electro-migration increases with heat, I think it doubles for every 3C degree increase. This is why overclocking CPUs cn lead to unexpected failures. So, does that mean it might not be a bad idea to do some restoration work (or have it done) on the newer radios when they reach 20 years or so, sort of like the older tube radios?? I imagine that the caps last longer than the old paper caps or black beauties, but fixing up an R-70 or an FRG-7700 (if in otherwise decent shape) hadn't occured to me before. You can't restore ICs, of course, but you can replace auxilary transistors, capacitors, resistors, etc. I know that some of the older transistorized clock radios (the ones made in Japan prior to the microchip age) tended to have the radio die gradually over time. This happened prior to the motor which flipped the numbers dying. I know that happened to an old 1971 Juliette which was my first radio. The radio gradually got weaker and weaker and finally went silent, then the numbers stopped turning. Those clock radios were pretty cheaply made and were not worth restoring, but a tabletop SW radio like a 7700 would definitely be worth restoring if it was otherwise pretty good. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
I have a will,it is all legal and binding too.In fact,years ago I went
to one of those crooked lawyers (all lawyers are crooks,but of course y'all already knew that) and got it all did up legal.When I croak,anything my sister and brother in law doesn't want of mine,(and I doubt if they would want to have any of my old junk) an old buddy of mine can have what he wants. cuhulin |
Sort of like buying a secondhand computer,It will probally need some
sort of repair work and definetly reprograming dpending on what sort of operating system it has/had and what sort of operating system one wants to install in the computer. cuhulin |
I have always liked tube type radios better than transistor radios.
cuhulin |
wrote:
Yes, for many electronic appliances it ultimately comes down to a cost-to-repair vs cost-to-replace comparison. And since the relative price of most new electronic goods continues to drop many older electronic appliances become disposable. This is true. The only exception to this that I can think of would be limited market electronics like tabletop SW radios. I've had my Yaesu FRG-8800 fixed twice since I bought it. It arrived with a broken freq/clock switch, since it was packed in wadded up newspaper. It also had a certain resistor die (apparently a common problem) a couple years after that. The cost to fix both these problems, and the cost to buy it used of course (about $200, what I paid for the 2010 that I traded for it) is still far less than the cost of a new Drake R8B. But tabletops are the exception to the rule. Most mass market consumer electronics are disposable, a trend that started in the 50s with the first transistor radios. Computers, on the other hand, are still worth fixing, at least until they get truly obsolete. And computers are different in that they have software problems even if they don't have any hardware problems. I remember my parents taking household appliances like a tube-powered clock radio or a mixer in for repair. Today if the appliance dies it is just replaced. I'm trying to think of where a TV, Radio or small appliance repair shop might be in my area, but I'm drawing a complete blank. Times have changed. In an era when consumer electronics are so cheap, when you can get a clock radio for $7.99, it doesn't make any sense to have stuff fixed. I was looking through newspaper microfilm of papers printed when I was born (1974), and I came across an ad for an IC run Panasonic clock radio-for $39.95! That was a lot of money 30 years ago. Today, the maximum you'll spend for an all digital, two alarm Sony clock radio is $25, even though the dollar has lost much of its value, and if you want to go to Kmart you can get a clock radio for much less, as I noted. Even TVs are cheap-a 20" color TV costs about $150, compared to twice that in 1974. running dogg wrote: Michael Lawson wrote: wrote in message ups.com... wrote: My wife and son are both E.E.'s and their explanation is that IC's begin to degrade slowly as a result of impurituies in the wafer. Simple components like capacitors dry out and resistors begin to open up. Wish I knew more, but I can hear what they tell me in the radios I've owned. I owned one of the comparison radios, the Panasonic RF5000b. Big beast of a 24 pound radio with four antennas. It was pretty insensitive by any measure. Sure it would catch the big nighttime SW's but that was about it. Other radios, such as a Radio Shack DX150b were still pretty sensitive (and still raspy sounding) after 25 years, so the rate of degradation isn't a constant. Do a net search on "eletro-migration". Over time the electrons carry some of the ions that make junctions either P or N. Electro-migration increases with heat, I think it doubles for every 3C degree increase. This is why overclocking CPUs cn lead to unexpected failures. So, does that mean it might not be a bad idea to do some restoration work (or have it done) on the newer radios when they reach 20 years or so, sort of like the older tube radios?? I imagine that the caps last longer than the old paper caps or black beauties, but fixing up an R-70 or an FRG-7700 (if in otherwise decent shape) hadn't occured to me before. You can't restore ICs, of course, but you can replace auxilary transistors, capacitors, resistors, etc. I know that some of the older transistorized clock radios (the ones made in Japan prior to the microchip age) tended to have the radio die gradually over time. This happened prior to the motor which flipped the numbers dying. I know that happened to an old 1971 Juliette which was my first radio. The radio gradually got weaker and weaker and finally went silent, then the numbers stopped turning. Those clock radios were pretty cheaply made and were not worth restoring, but a tabletop SW radio like a 7700 would definitely be worth restoring if it was otherwise pretty good. ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
wrote:
Yes, for many electronic appliances it ultimately comes down to a cost-to-repair vs cost-to-replace comparison. And since the relative price of most new electronic goods continues to drop many older electronic appliances become disposable. This is true. The only exception to this that I can think of would be limited market electronics like tabletop SW radios. I've had my Yaesu FRG-8800 fixed twice since I bought it. It arrived with a broken freq/clock switch, since it was packed in wadded up newspaper. It also had a certain resistor die (apparently a common problem) a couple years after that. The cost to fix both these problems, and the cost to buy it used of course (about $200, what I paid for the 2010 that I traded for it) is still far less than the cost of a new Drake R8B. But tabletops are the exception to the rule. Most mass market consumer electronics are disposable, a trend that started in the 50s with the first transistor radios. Computers, on the other hand, are still worth fixing, at least until they get truly obsolete. And computers are different in that they have software problems even if they don't have any hardware problems. JS Computers are usually worth fixing, but the fix these days is replacement of a module, not replacing electronic or mechanical components.. I remember my parents taking household appliances like a tube-powered clock radio or a mixer in for repair. Today if the appliance dies it is just replaced. I'm trying to think of where a TV, Radio or small appliance repair shop might be in my area, but I'm drawing a complete blank. Times have changed. In an era when consumer electronics are so cheap, when you can get a clock radio for $7.99, it doesn't make any sense to have stuff fixed. I was looking through newspaper microfilm of papers printed when I was born (1974), and I came across an ad for an IC run Panasonic clock radio-for $39.95! That was a lot of money 30 years ago. Today, the maximum you'll spend for an all digital, two alarm Sony clock radio is $25, even though the dollar has lost much of its value, and if you want to go to Kmart you can get a clock radio for much less, as I noted. Even TVs are cheap-a 20" color TV costs about $150, compared to twice that in 1974. JS That's a perfect example of why the few TV repair guys left in the business are pretty lonely these days. Another factor contributing to their loneliness is that the TV's (and other consumer products) are much more reliable these days. That prices have come down in absolute and relative terms can be seen in the 27 inch TV. It was once an expensive top-end size 20 years ago, but is an entry level size these days and is priced accordingly. |
It's an auction. People bid on items placed there. Whoever bids the highest by time the auction ends gets the item. Understand now? wrote in message oups.com... http://cgi.ebay.com/ws/eBayISAPI.dll...5895 535&rd=1 |
|
| All times are GMT +1. The time now is 07:13 PM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com