OK more information. When I connect the PTT line to my echolink circuit which has a transistor on it, I can hear the relay click a little bit but that is when echolink isn't keyed. When I key echolink I don't hear any change in the relay and it doesn't kick the transmit. The echolink circuit shows as open when not keyed and shorted to ground when keyed according to my meter and has worked on every other radio I have tried it on.
Any suggestions? Thanks, Vern From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Vernon Densler Sent: Thursday, April 16, 2009 8:45 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: MASTR II PTT I tried my normal echolink circuit but it won't kick the PTT on the MII. From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb8art Sent: Thursday, April 16, 2009 7:59 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: MASTR II PTT 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 Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> , "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 >
