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#2
February 5th 07, 11:57 AM
posted to rec.radio.shortwave
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Icom R71: How well does it stack up today?
On Feb 5, 3:41 pm, (Geoffrey S. Mendelson) wrote:
wrote: I've often thought about getting another R-5000. I only had mine for about 3 or 4 days but it had a bad connection somewhere, which caused the sensitivity to drop intermittently, and bad key-bounce. If I could find a perfect one running off 240 V, I think I'd be sorely tempted. The audio was the best I've heard and made for really pleasant listening. You need to be careful. There were two versions sold. One was 120 volt ONLY, and the other was a multivoltage unit with a switch in the back. My 1991 vintage U.S. purchased R5000 is 120 volt only. In my Universal catalog from 1993, they were selling only the multivoltage unit. In 1996 when I started packing up to move here, I called Universal asking if they could modify it to 220 volts and was asked "aren't all of them multivoltage?". They could not modify it, but it has lived happily here on 230 volts connected to a 200 "watt" continuous duty transformer for the last 10 years. The clock does not seem to be affected. I assume it is not dependent upon the power line frequency. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM IL Voice: (07)-7424-1667 Fax ONLY: 972-2-648-1443 U.S. Voice: 1-215-821-1838 Visit my 'blog athttp://geoffstechno.livejournal.com/ Hi Geoff Good point. The one I bought from eBay was 120 volt only, so I was a bit unhappy that I spent good money on a transformer only to send the radio back within days. On a different note, how common is the key bounce? Do most units end up suffering in the long term? Cheers Andy |
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#3
February 5th 07, 12:51 PM
posted to rec.radio.shortwave
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Icom R71: How well does it stack up today?
wrote:
On a different note, how common is the key bounce? Do most units end up suffering in the long term? You may want to ask that on the R5000 Yahoo group. IMHO far more worrisome is the dreaded dots...... This is where the display only shows a row of dots due to the main PLL (phased locked loop) becoming unlocked (going off frequency) because it was potted in a rubber compound, which over the years absorbed moisture from the air. The repair entails unsoldering all of the parts in the PLL circuit, removing the remains of the compound from them and putting them back. In many cases, some of them have been corroded beyond use and must be replaced. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM IL Voice: (07)-7424-1667 Fax ONLY: 972-2-648-1443 U.S. Voice: 1-215-821-1838 Visit my 'blog at http://geoffstechno.livejournal.com/ |
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#4
February 6th 07, 12:50 AM
posted to rec.radio.shortwave
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Icom R71: How well does it stack up today?
On Feb 5, 4:57 am, wrote:
On Feb 5, 3:41 pm, (Geoffrey S. Mendelson) wrote: wrote: I've often thought about getting another R-5000. I only had mine for about 3 or 4 days but it had a bad connection somewhere, which caused the sensitivity to drop intermittently, and bad key-bounce. If I could find a perfect one running off 240 V, I think I'd be sorely tempted. The audio was the best I've heard and made for really pleasant listening. You need to be careful. There were two versions sold. One was 120 volt ONLY, and the other was a multivoltage unit with a switch in the back. My 1991 vintage U.S. purchased R5000 is 120 volt only. In my Universal catalog from 1993, they were selling only the multivoltage unit. In 1996 when I started packing up to move here, I called Universal asking if they could modify it to 220 volts and was asked "aren't all of them multivoltage?". They could not modify it, but it has lived happily here on 230 volts connected to a 200 "watt" continuous duty transformer for the last 10 years. The clock does not seem to be affected. I assume it is not dependent upon the power line frequency. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM IL Voice: (07)-7424-1667 Fax ONLY: 972-2-648-1443 U.S. Voice: 1-215-821-1838 Visit my 'blog athttp://geoffstechno.livejournal.com/ Hi Geoff Good point. The one I bought from eBay was 120 volt only, so I was a bit unhappy that I spent good money on a transformer only to send the radio back within days. On a different note, how common is the key bounce? Do most units end up suffering in the long term? Cheers Andy- Hide quoted text - - Show quoted text - Andy - the R-5000 I have has "mild" key bounce which is not a problem if you just hit the key solidly and don't hold you finger on it. I don't find it much of an issue. This particular radio must a have lived in a damper part of the country because there is light corrosion on many of the internal pcb screws and some of the metal parts. If any hydroscopic materials had moisture in them when I got the radio they have long since dried out in this Arizona air! Despite the minor cosmetic blemishes which is probably why I got it for so cheap on Ebay, it's a fabulous performer. I modified the notch filter so it operates in CW mode (the "peak" filter was a joke on CW) and upgraded the AM filter plus added the CW filter. It gets a bit hot internally due to poor ventilation and a hot transformer but there is no drift. My only complaint is that the tuning is a bit too fast and as such is touchy on SSB at times. Regards, Frank Tucson, AZ |
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