[Elecraft] Low output power on 24 and 28MHz resolved and Xverter Integration example

[Floyd Sense]

Mike - thanks very much for this information.  Recently while I was
troubleshooting a suspected problem in the low-pass filter section of my
KPA-100, I was seeing what I thought to be a rather high value of SWR on
some of the bands when testing the filters per the Elecraft recommended
technique.  For some reason, it never occurred to me that one of the relays
might just be stuck in the ON position, thus affecting several of the bands.
I'm going to revisit the relays in the next day or so just to make sure one
of them isn't stuck.  Many thanks for the idea.

73, Floyd - K8AC


----- Original Message ----- 
From: "Mike Lewis" <k7mdl@hotmail.com>
To: <elecraft@mailman.qth.net>
Sent: Wednesday, November 19, 2003 2:28 PM
Subject: [Elecraft] Low output power on 24 and 28MHz resolved and Xverter
Integration example


<<snip>>

> 6.  Found that relay K5 was permanently in the active postition, leaving
the
> 15M bandpass filter in parallel with all other bands.  Continuity tests in
> circuit verified this.  (Pin 3 and Pin 8 should be grounded when not
> selected).  Except for the lower 24MHz output (6W) and narrow 10M
bandpass,
> you would not have ever noticed this.   IO controller voltage was
confirmed,
> and upon extraction of the relay, I could use a battery and operate the
> relay, hear it, but the contacts did not move.  Before extraction, I tried
> removing the control board and powering up, which should reset the
latching
> relays, but no change.
>