[Elecraft] Interchangeable Boards

Sat Jan 25 20:33:01 2003

Hi

You can do the alignment by removing the ATU board and inserting a jumper
wire in pin 1 and 9 of J2 on the filter board. Then reconnect R37 and the K1
is back to normal for adjustment and alignment

Don Brown
KD5NDB

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, January 25, 2003 3:50 PM
Subject: [Elecraft] Interchangeable Boards

> First the question, are the RF boards interchangeable between rigs? I know
> they are with the same rig, but is there something about the alignment of
the
> boards that makes a perfectly aligned board need re-alignment if it is
used
> in another K-1?
>
> Here's how/why the question comes up. I have had a K-1 setup with the
40/20
> meter board and the ATU. I bought a newer version of the K1 (from S/N 8XX
to
> S/N 13XX) that came with a 30/17 meter board. I tried to swap the board
> between the radios so my 40/20 with ATU will be in the newest radio.
>
> Both boards work great in the original radios with over 5 watts out to a
> dummy load on the lower bands. But when I swap the boards in radios, the
> 40/20 board's output is cut to about 3.5 watts in the newer radio. I'm
> thinking a new alignment might help, but I can't get to the L1, L2, etc.
> because the ATU board is in the way. The rig will not work with the ATU
> removed because the original circuit board was modified for the ATU.
>
> I've looked at the modifications and it seems that they would be
impossible
> to reverse for a new alignment. Any thoughts on this? I got into this
because
> I love this little radio so much. I ran across a deal on eBay for a newer
> S/N, so I thought I would just swap the boards. Best laid plans, etc.
>
> If I can't make the swap it may not matter. I really can't tell any
> difference between the S/N 8XX and the S/N 1300 except the manuals seem
about
> a year apart.
>
> Jimmy Walker
> WA4ILO
> Macon, GA
> [email protected]
> <A HREF="http://members.cox.net/wa4ilo">http://members.cox.net/wa4ilo</A>