That is exactly what I built into my homebrew amplifier and my SB-1000. It is an input that disables the key line if it doesn't see +12v. I use DIGOUT1 to turn on a transistor switch that applies the 12v to the amp.
On 5/31/2011 3:25 PM, Don Wilhelm wrote: > Vic, > > I am going to lobby for an "Amp Inhibit" input in every amplifier that will > accept exactly > what your external relay driven by DIGOUT1 signal is doing. :-) > > IT does not have to place the amp in standby, it just opens the Key In line, > and would be > easily be done inside the amplifier. When the signal is present, the amp > ignores the Key > In line. > > 73, > Don W3FPR > > > On 5/31/2011 6:10 PM, Vic K2VCO wrote: >> I use the DIGOUT1 line to enable my amp, as someone mentioned. It's reliable >> because you >> can turn it on or off and not just change its state, as with some other >> parameters. >> >> You would be amazed at how much output you can get from a single 3-500Z (for >> a very short >> time!) if you hit it with 110 watts of drive. I found out before >> implementing DIGOUT1, but >> luckily the tube survived. >> -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ ______________________________________________________________ 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
