[Kenwood] TS-570D Tuning Problem

[Darrell Drake]

Joe....
    Sounds like RF is getting back into the radio on 20 metres. Take the ATU
out of the circuit and transmit into a dummy load to see if that eliminates
the problem. If the problem persists, there could be a problem with the
radio. But I'm willing to bet that the problem will disappear, which brings
us back to the antenna and/or feedline causing excessive RF feedback to the
radio.  Process of elimination, ol' boy!
BTW....I don't have a 570D radio, but I'm guessing that it's new enough to
be a solid state radio. So what's to tune up? There are no tubes to tune to
resonance.
Cheers.....
Darrell,
VA3DG/VE3DDG


> I just bought a TS-570 and have encountered a strange problem. The
> radio will tune up on any band, except 20 meters. When I attempt to
> tune up on 20 meters the screen blanks out and the HELLO message
> appears. I thought I had a power supply problem at first but when I
> switch bands everything works fine. Help please! Any suggestions or
> thought would be greatly appreciated.
>
> Thanks,
>
> --
> Joe Gibson
> KD5RCW
> http://www.qsl.net/kd5rcw