[aprssig] HT-220 HT's for APRS

Stephen H. Smith wa8lmf2 at aol.com
Thu Jul 19 19:30:46 EDT 2007

Robert Bruninga wrote:
> Has anyone used the old motorola HT-220 HT's for a simple cheap
> APRS radio? I found a box full of them in my garage. 
> I remember doing one years ago, and the only rub was the lack of
> a PTT relay.  I think I might just use some diodes and 1/4 wave
> line this time?
Why would it matter if the unit uses mechanical relays or electronic 
switching for PTT?


Stephen H. Smith    wa8lmf (at) aol.com
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