Nice solution. Unfortunately for me, I am trying to operate remotely. I may just have to get a web switch and turn the amp on and off. I am hoping that some one has a better solution.
Raj, N2RD > On Oct 20, 2020, at 11:52 AM, <[email protected]> <[email protected]> wrote: > > Raj... > I have the same issue, but a less elegant solution. My 2 Meter amplifier > has a remote head that has the keying input located on the back of it. I > opened it up and wired a toggle switch in line with the circuit with an LED. > I labeled it STBY/OPR like on my Ameritron AL-1200. I just flip the 2 meter > amp "out" of the PTT circuit when I'm not using it. > > Thanks, > Hank > K4HYJ > > -----Original Message----- > From: [email protected] > <mailto:[email protected]> <[email protected] > <mailto:[email protected]>> On > Behalf Of Rajiv Dewan via Elecraft > Sent: Tuesday, October 20, 2020 9:34 AM > To: [email protected] <mailto:[email protected]> > Subject: [Elecraft] 2m internal transverter PTT out > > Dear Elecrafters, > > I have a K3 with an internal 2m transverter that I use with an external > amp. Initially I had the amp connected to PTT-out but that would key the 2m > amp if I transmitted on any band. To help with this, I put the optional > jumper on P8 in the transverter so that it put out 5v on ant3 (2m out) while > transmitting. I then built a simple NPN grounded emitter circuit to key the > 2m amp by grounding its PTT-in when 5v show up on output of the transverter. > Here is the shocker: 5v show up on 2m transverter out whenever I transmit > on ANY band. How disappointing. Am I missing something? Is there a simple > fix? > > Raj, N2RD > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [email protected] <mailto:[email protected]> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
