Steve,
You might want to try building up part of the K60XV as part of your
project. Download the K60XV manual and its errata and look at the parts
list - you would need to add the K60XV firmware (and use MCU firmware
version 2.04 if you do not already have it). You would not need the
changes under the RF Board to add 60 meters, nor would you need the
relay and bandpass filter components in the upper left of the schematic.
You would need the components in the lower right of the schematic so you
could control the low power output with the power knob. All connections
to the K2 are via RF Board J13.
That addition would allow you to remove the attenuator and automatically
switch in the 1mW output whenever you select a transverter.
You may be able to obtain a bare K60XV board from Elecraft at a decent
price.
73,
Don W3FPR
On 12/18/2017 11:11 AM, Steve Kavanagh via Elecraft wrote:
For a while now I've been working on a project to install a low power 2 metre transverter
inside an Elecraft K2, in order to use it as an IF transceiver with transverters for the
microwave bands. I got it done this summer and used it on 10 GHz during the ARRL 10 GHz
and Up Contest, as a "plug-and-play" replacement for one of my aging FT-290Rs.
I have just finished writing this project up, as it may be of interest to other
microwavers. The description is at
http://www.qsl.net/ve3sma/TheK290RProject.pdf .
Happy reading!
73,
Steve VE3SMA
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