Vern, If your relay coil doesn't draw very much current it probably would work. I would say using a opto isolator or minumum a transistor switch would be a more practical method. I use a simple 2n2222 transitor to fire a MII for echolink.
Randy --- In [email protected], "Vernon Densler" <m...@...> wrote: > > I am trying to key my MASTR II from my PC. Is there any reason I can't use > a 5v 1a relay connected to the serial port and the PTT line on the MASTR II > to do this? > > > > Thanks, > > Vern > > KI4ONW >

