[Elecraft] 4m-Transverter for K3?

Allan G Duncan allan.duncan at allanduncan.co.uk
Tue Sep 2 11:38:48 EDT 2014


I have been using an Elecraft XV50 transverter converted to 70MHz now for
many years. It was originally used with my K2 and now with my K3. This
combination has won many contests here in the UK. RX sensitivity is good and
strong signal handling seems more than adequate for me. I would not
recommend it for FM use at full rated output, however, as the heatsinking of
the PA module is marginal for that mode.

I had considered making up kits of parts to convert XV50 to 70MHz as it's
quite a simple modification especially with the new PA module that now ships
with the XV50 kit. It takes more time ordering parts from various suppliers
than actually carrying out the modification. The only part that cannot be
obtained is the front panel "XV70" backlit label to replace the original
"XV50" one. There are a few SMD capacitors to change which may put off some
constructors, although I found it straightforward.

I believe EA7HG sells an internal transverter for the K3 although I have not
yet heard one on air. 

There is lots of further reading about 70MHz at http://www.70mhz.org


73

Allan
GM4ZUK



> There has been mention of converting an XV50 transverter to 70 MHz in 
> the past on this reflector.
> I do not believe it is a difficult mod.
> You may want to do a search of the reflector archives.
>
> 73,
> Don W3FPR



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