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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 4th Apr 2018, 10:13 am   #1
CesarLG
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Default PRC320 Faults - Random frequency-shifts on SSB

I have seen on this forum information regarding this issue. I have to check the +110V rail from the PSU
G6Tanuki explains that some caps need to be replaced and they mention instructions on the VMARS website in order to change the capacitors in "Module 5".

Bad news are that this documents on VMARS are not available to public.
Can anyone provide information regarding this procedure?

Thank you very much!
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Old 4th Apr 2018, 12:49 pm   #2
M0SOE_Bruce
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Default Re: PRC320 Faults - Random frequency-shifts on SSB

Is this what you need?

Bruce M0SOE
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Old 4th Apr 2018, 2:32 pm   #3
CesarLG
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Default Re: PRC320 Faults - Random frequency-shifts on SSB

Hi. I need to know why I have 61V instead of 121V.

I have read the caps need to be replaced, but I have already changed the high voltage ones. What is next? The others?

I have changed the two synthesizer caps too

I have 109.2V on the 110V spot.

Thank you! Cesar.
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