[Elecraft] KEYOUT PTT only when transverter band selected

[Julian, G4ILO]

I don't have a linear amplifier. I do have a transverter, and I use the KEY
OUT jack to put it into TX. Trouble is, it puts the transverter into TX
whatever band I'm using. For LO stability reasons (not to mention that I can
never remember to switch the transverter off when I'm not using it) I'd
prefer to be able to leave the transverter switched on but only receive a
PTT signal when the VHF band is selected. I think that means I'd need a
circuit that combines the state of DIGOUT0 with KEYOUT-LP, such that it
grounds the transverter PTT input when DIGOUT0 is 0V and KEYOUT-LP is
grounded. Has anyone made something like that?

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Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

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