[Kenwood] TS-850 front end overlfow

[Tommy]

First check if the QRM is local ie mainsborne. The PSU
has no mains input  filter. I have fitted a filter
from an old TV set.

--- Juha.Kasari at edu.seinajoki.fi wrote:

> Hello,
> 
> My 850 front end overflow. There is very bad
> inteferencies between any bands
> when I am sending my second radio (K2, and it is
> ok!) the other band.
> Interference is the same like sending the same band!
> I compered to 870 or
> 830 and no problem. I tried to put wire over BPF and
> the same interference.
> I didn't find broked diodies with Fluke diodetester.
> Bandekoder IC1
> (SN74LS145) and IC2 (TC4011BP) are OK. Band is
> switching.
> 
> So, what I do next? Change all diodies? What is
> startpoint?
> 
> 73 de juha - oh6os
>
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