In my case, I think the problem may be hot switching as Tom described since
the symptoms are very consistent and on several occasions I did notice the
FT-1000D's SWR meter spiking on the initial key closure (it only did this once
or twice out of many tries). If hot switching is a problem, does anyone know a
way to speed up the FT-1000D relay closure relative the onset of the
transceiver's RF envelope?
Mike, W4EF...................................
----- Original Message -----
From: "Tom Rauch" <w8ji@contesting.com>
To: "Michael Tope" <W4EF@dellroy.com>; <kimba@sprint.ca>
Cc: "AMPS" <amps@contesting.com>
Sent: Sunday, March 25, 2001 8:38 AM
Subject: Re: [AMPS] Problem with Ameritron AL-82
>
> > I had exactly the same problem with my Alpha 87 driven by an FT-1000D.
> > The problem was not the amplifier - it was a fault in the wiring to
> > the "tx-gnd" phono jack on the back of the FT-1000. Fortunately, at
> > least in my case, the problem was NOT in the FT-1000 tx-gnd relay,
> > which would have been a pig to replace.
>
> This makes me wonder.
>
> My FT1000D has dropped the switch lead a three times now, and
> while it was on the way out it did something similar to what Mike
> described except on many occasions it would NEVER close the
> amp relay.
>
> The first time I just barely touched the relay switch near the jack
> and it cured the problem. The second time (about a year later) I
> resoldered the connections on the switch, and it was OK for a
> week.
>
> The third time I cleaned the switch contacts, and it has been OK
> for almost a year now.
>
> I wonder if the switches aren't the problem, since mine would
> straighten out just by touching it or anything around it??
> 73, Tom W8JI
> W8JI@contesting.com
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
>
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|