| Author |
Message |
    
Sodapop
| | Posted on Thursday, July 24, 2003 - 12:35 pm: | 
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I love this radio. Had lots of contacts and have talked locally with no trouble. But since I got the radio, the audio on SSB has always been kinda low. AM and FM are fine. Now with headphones on, I can hear pretty well. But I do have to turn the volume up even then. So can this be fixed without to much trouble? I really love this radio, and this is the only flaw it has. Any help would be great. |
307
| | Posted on Thursday, July 24, 2003 - 2:39 pm: |
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Tell you what , just so I can "play" with one , email me and I will do it for you free..(shipping only)
tech307@copperelectronics.com
307 |
Sodapop
| | Posted on Thursday, July 24, 2003 - 3:40 pm: |
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Email is on it's way. And thank you for the offer, that was super kind of you! |
Slim1
| | Posted on Thursday, July 24, 2003 - 11:03 pm: |
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shucks 307;all ya had to do was ask!!! mine's been
sittin on the shelf for about 1-year just collectin dust! same problem w/mine.you really
gotta turn up the volume to hear worth a darn on SSB !!(practically all the way up) i was gonna re-align mine but just haven't done it yet.
307,if ya could,post some results/fixes,for this
problem for the rest of us SS4900B owners.thanks,
GOOD LUCK SLIM |
307
| | Posted on Tuesday, July 29, 2003 - 8:06 am: |
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Will do....
307 |
Sodapop
| | Posted on Wednesday, August 13, 2003 - 7:32 pm: |
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Well, I have had the 4900 back from Tech307 for a few days. And so far, I am very pleased with it. The RX is better, and the SSB audio is much, much better. So far, due to my working till 6 every night, I haven't done any Dxing. Just to much trash at night where I live. But I have some reports with a few locals, and the audio and signal are blowing smoke. I can honestly say Tech307 has the 4900 working better then it did from the factory. The man knows his stuff, and the next time I need work, he'll be the first one I'll send my radio to!
Thank you Tech307, it was great having you work on my radio. It's now tha radio i always thought it could/should be. |
Kc0gxz
| | Posted on Thursday, August 14, 2003 - 1:51 pm: |
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307
What did you find that is causing that little glitch in the 4900s that makes the receive audio drop way down like they sometimes do and what did you have to do for the fix?
Jeff, kc0gxz. |
307
| | Posted on Thursday, August 14, 2003 - 9:05 pm: |
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I replaced two capacitors near the Audio IC that couples hi frequency noise to chassis (i.e. hiss), I can not remember which ones , this combined was one of the Finals going into oscillation. The oscillation slammed the main board and the coupling caps were open. When this happens the RX goes deaf. I replaced both finals plus the driver. Then I did a factory alignment.
307 |
Slim1
| | Posted on Friday, August 15, 2003 - 12:34 am: |
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how much would this cost a person,if they were to send it to coppers? i just may have you do it 307!
overtime at work is right around the corner and i really don't have the time as it is now
also,soda-pop,where-abouts is the volume setting
for SSB now? surely not almost "all" the way up
anymore!!!! glad 307 got it straightened up!!!
hats off to ya 307.enjoy soda-pop.....SLIM |
Sodapop
| | Posted on Friday, August 15, 2003 - 5:48 am: |
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Slim1 - Nope, the SSB audio is not all the way up. I run the volume around 8 o'clock or so on AM, and I find 9 o'clock is dead on for SSB now. A HUGE improvemnet I would say. And the reason I run it that high on SSB is......well I am not as young as I used to be. And neither are my ears! *G* But it really does work great. I now own one sweet radio, that has great audio on AM and SSB! |
307
| | Posted on Friday, August 15, 2003 - 12:36 pm: |
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Slim , I am the tech for Copper..If you want it done , email me at tech307@copperelectronics.com
307 |
2ir473
| | Posted on Sunday, August 17, 2003 - 6:49 pm: |
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307,
Don't want you to give away any trade secrets or anything (uh,well, really I do), but I was wondering if you found the internal power supply to be putting out too much voltage?
This seemed to be a problem that was found on these 4900s. I noted voltages of 22+ volts in my 4900, when many components were rated for 16v.
I installed a 12v voltage regulator in my 4900 for the SP-1a I put in several years ago, so as to protect the speech processor.
Slim1 and I go back to the days of when these radios were first offered for sale at the old EEI, and we both have been trying to get them to live up to their good looks.
I have always been plagued with (relatively)low power output (around 20-25 watts max on SSB) from this dual final radio. If you think you can make these radios work to the level of other dual final radios (30-35 watts), please let us know.
I would be willing to give this radio one more try. |
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