UK Vintage Radio Repair and Restoration Discussion Forum

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-   -   FT2800 low receive gain (https://www.vintage-radio.net/forum/showthread.php?t=183762)

Peter.N. 13th Sep 2021 1:55 pm

FT2800 low receive gain
 
Didn't realise this when I bought it as it is connected to an old BNOS linear which has a very good pre amp but switch the preamp off and all the weak stations disappear.

I haven't looked inside it yet as its very modern for me - no valves for a start;). is it likely to be just an alignment problem or are they susceptible to faults?

Thanks

Peter

Restoration73 13th Sep 2021 2:20 pm

Re: FT2800 low receive gain
 
This seems to be a problem with a range of modern Yaesu/Standard Vertex radios, the
ceramic IF filters develop dc leakage leading to deafness. Transmit is unaffected.
My FT-1802 has the same problem. As the parts are surface mounted you may prefer
the services of a pro repairer, I think a forum member is. A recent post mentioned it.

mickm3for 13th Sep 2021 2:30 pm

Re: FT2800 low receive gain
 
Hi the filters are prone to faults see https://vintage-radio.net/forum/show...ight=yaesu+vx7

g0hze snowy 18th Sep 2021 11:07 pm

Re: FT2800 low receive gain
 
i can confirm that the filters are usually the fault, they are cheap enough to purchase, the postage is more costly than the 2 x filters.
Yaesu techs recommend that you remove the black plastic cap and shake out the filter separators then unsolder the legs (5) 1 at a time, very easy to do, i have done several now, HOWEVER i did get caught out with 1 radio, it turned out not to be the filters but those miniscule stick on 3 legged fuses, the front end transistors. well worth doing the repair, Snowy


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