[1000mp] ft1000mp mkV amp switching

Tom and Linda Hellem [email protected]
Fri, 30 Aug 2002 17:55:44 -0700


> Jim:
I would very much appreciate if you could fax that article to me also.
I have been looking for a way to eliminate that clatter in the transceiver
when the amp is not in use. My fax is 715-789-2903.
If for some reason you are unable to do so, no problem, now I at least have
some info on it.
73 and thanks for posting this.

Tom K0SN



> If you want to add a simple circuit to the SB-220 to bring the voltage
down
> to 12V @ 2 ma, there was a mod published in QST (January '88, page 45),
> which I found to work fine.  The benefit of using that mod instead of the
> relay in the MP or Mark-V is silent T-R switching in the transceiver,
though
> the relay is pretty quiet.  You eliminate any question of relay
limitations.
>
> If you don't have access to the article in the magazine or on a CD, I can
> fax it to you.  It's just one page.  (I could scan it at work and email
too,
> but I've never used a scanner!)
>