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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
