[Elecraft] Modifying the K2 for use as an IF radio for the microwave bands

[David Olean]

Looks good, Steve,

I did something similar a number of years ago. I put a  low power DEMI 
xverter in a pair of K2s but ended up with a birdie that was pretty 
loud  near 145.1 MHz where we had our microwave calling frequencies. I 
ended up removing the xverter and put it in a different enclosure along 
with band switching to select up to six different transverter bands all 
selectable from the keyboard of our logging program.  It was great for 
home station use, but having 144 built in to the K2 box is a nice 
feature for roving.

With our transverter idea, we bypassed the K2 PA circuits and used a 
lower power takeoff point for TX. It drove the transverter just fine.  
As I recall, we had a switch on the K2 to select the low power takeoff 
mode.

I hope to work you some more on your roving trips. I missed last summer 
due to an extended illness, and only recently have I been well enough to 
be active with hamming again.

73

K1WHS (FN43)


On 12/18/2017 4:11 PM, 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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