You might be better off building the Paul Wade 222 MHz transverter from
scratch. Although it was originally designed to work with the FT-817,
there's no reason you couldn't use it with any rig if you adjust the power
to the transverter correctly.
http://www.w1ghz.cx/222xvtr/222.htm
73, Zack W9SZ
On Thu, 15 Jan 2004, Marten T Beels wrote:
> Hello all,
>
> I've done some googling and digging through the archives, and I've found
> apetizing mentions of modifiying transverters for different bands. In
> particular, I'm considering modifying a Tentec 1209 to convert 144 MHz to
> 222MHz instead of 50 MHz. This would entail changing the LO from 94 to 78
> MHz,
> redesigning the filters to pass the sum and block the difference frequencies,
> redesigning the final amplifier, and the rx amp.
>
> What else am I missing?
>
> Now I'm trying to decide just how practical such a conversion would be. Am I
> better off building one from the ground up?
>
> I'm an electrical engineering student, so this could be an interesting
> learning
> experience. I'm not totally unfamiliar with filter and transformer design.
> (But far from an expert!)
>
> Marten
> KC8HZM/R
> Uber Rover with KC8HZQ
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