[Elecraft] Combo pre-amp

[Joe Subich, W4TV]

Ian,

On 5/26/2013 5:39 AM, Ian White wrote:
> The problem is that any modification has to work within the very tight
> space behind the rear panel of the KXV3 module. There is >>barely<<
> enough space to install a tiny PC board behind the RX ANT IN and RX ANT
> OUT connectors, with very tight limits on what can be included on that
> board. The track layouts had to be designed with a step size of 0.025in
> and in some places the tolerances were even tighter than that.

I'm talking about a solution that would switch the RX IN/OUT connection
from the rear panel to board connections on the "KXV3B" much the same
as is done for XVTR IN/OUT in the KXV3A.  That means one is not dealing
with the narrow space between the KXV3 and KXV3 connector board and
all returns would come from the KV3B board.

> Wayne has acknowledged that the K3 can sometimes be lacking in
> sensitivity on 6m, and has stated that the external PR6 module is
> Elecraft's solution.  I wouldn't expect that position to change
> significantly.

The external module is a workable solution for a single band and
I understand the difficulty in changing out the broadband bipolar
preamp or adding an alternate preamp in the current signal flow
but this would be a reasonable alternative for those who do not
want/need the internal transverter.

BTW, I looked at your web site and don't find any information on
calculating NF from MDS ... just curious.

73,

    ... Joe, W4TV