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Message |
    
Dx_freak
Junior Member
Username: Dx_freak
Post Number: 20
Registered: 2-2007
| | Posted on Friday, August 24, 2007 - 3:59 pm: | 
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I have read about this issue before but cant seem too find it. I have a galaxy saturn radio, it has a noise in the speaker at idle. It is when the volumn is down and or at low, it is and ossulating high pitch squeel like noise, not bad but audiable, anoying at long periods of time. No matter what the setting and of any buttons in any setting, the sound is there, anybody have any suggestions?
Richey
DX freak/Mad Dog/Puppet Master
CEF#885
I can only do the best I can with what I got.
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Penrider
Intermediate Member
Username: Penrider
Post Number: 203
Registered: 1-2007
| | Posted on Tuesday, September 04, 2007 - 10:01 pm: |
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the noise you describe sounds like a power supply issue similar to mobile alternator whine. the saturn/saturn turbo series of base radios seem to have issues of various kinds with the power supply. make sure everything around the radio is shielded including the power cord to the radio itself. also, check your coax for broken shielding just to be safe. don't be surprised, however, if the radio needs to go to the shop to have the power supply checked out.
Sean
CEF867
Two tin cans and a string, it's still a contact...BTW, I need my can back when we're done!
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Test_bot
Junior Member
Username: Test_bot
Post Number: 25
Registered: 3-2006
| | Posted on Wednesday, September 05, 2007 - 11:42 pm: |
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In line noise filter in the power lead will probably cure it. Use at least a 10 amp noise filter in the hot lead. |
Dx_freak
Junior Member
Username: Dx_freak
Post Number: 24
Registered: 2-2007
| | Posted on Friday, September 07, 2007 - 12:55 am: |
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I found the problem, these radios have a bad glitch with the frequency meter. It is like motor boating in a car as in the descution, but what happens is the freq meter feeds back in to the audio out for the speaker. I went in and pluged the gaping hold ot the freq module and addes a resistor, I think it was a 470k ohm but not sure. I can find out though. Pull that cover because it is a cheap easy cure for the problem. I put this resistor on the + side of the speaker. It bring the audio down a little bit , it takes that anoying noise out also. Lets not forget that thats the fix for the built in speaker, you have to put the same size resistor inline on the external speaker jack also. Dont forget that or you will be right back into it again!!! Good thing is I did not stop there. I did the NPC MOD to it also. Im keying 1 watt and swinging 35 at normal talking into the mic. A little harder heavy voice, im seeing 45+. The mod is a swing kit and volting them finals. Working great so far. I really woke that crapy little saturn up. Now the guy I bought it from heard it on the 7th of sept. yesterday and now he wants to buy it back. Anyway, thanks for the info, but I nailed it after listening to the anoying noise and nawing my finger nails trying to figure it out.
Richey
DX freak/Mad Dog/Puppet Master
CEF#885
I can only do the best I can with what I got.
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Perrym1962
Junior Member
Username: Perrym1962
Post Number: 39
Registered: 11-2002
| | Posted on Friday, September 21, 2007 - 5:21 pm: |
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Also in the frequency counter module there are some 100uf capacitors. One of these needs to be changed to a 1000uf and this will take care of the problem also. I did this on one that I had awhile back. Also had a Voyage vr9000 and a galaxy 88, the same deal. |
Penrider
Intermediate Member
Username: Penrider
Post Number: 212
Registered: 1-2007
| | Posted on Saturday, September 22, 2007 - 1:07 am: |
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I never would have thought that the Freq counter could cause that. Any time I hear that particular noise, I automatically associate it with power supply interference. Learn something new every day.
Sean
CEF867
Two tin cans and a string, it's still a contact...BTW, I need my can back when we're done!
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