[RFI] RF Feedback - FL7000 AMP

[Don Moman VE6JY]

It's not an RF feedback issue.  The FL7000 is super touchy on overdrive in
SSB and you need to do the mods to desensitize the protection circuitry.
The unit I have, it was imposible to get near rated output without it
tripping.  After the mod, it behaves fine - and can still trip if there is a
"real" reason for it to trip.

73 Don
VE6JY

On Wed, Aug 19, 2009 at 7:51 AM, Tony <dxdx at optonline.net> wrote:

> All,
>
> I have what seems to be a unique situation with a Yaesu FL7000 solid state
> amplifier. The protection circuit trips for no reason in SSB mode, but
> works
> fine on CW and digital modes.
>
> The protection circuit is supposed to trip when SWR is high and that is not
> the case with my setup. Again, it works fine and keys to full output in CW
> /
> FSK modes.
>
> I was told that it could be a microphone RF feedback problem, but before I
> clamp on a bunch of torrid on the Heil mic cable, I was wondering if anyone
> had this problem and what it took to fix it.
>
> Thanks,
>
> Tony -K2MO
>
>
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>