[TRLog] MFJ Voice Keyer

[Bob Evans]

Brian,

I'm using the MFJ voice keyer with TRLOG.  It works fine but I hope you get a response from somebody who knows what they're doing with electronic circuits.  I don't even pretend to know what I'm doing.  I have simply used the same 2N2222 triggers (that are used for CW keying) connected to the four parrallel port pinouts called out in the TR manual to fire miniature 5+  VDC relays on the pin outs of the MFJ.   I ended up using a separate power supply (isolated from the computer, the rig AND the MFJ's 5+ VDC output) to get it running.  I had bad audio distortion until I ran the relays off their own isolated supply.   I used 5+ VDC relays thinking I could run them from MFJ's internal power supply.  I was wrong!  There's GOT to be a better way, but once I got it working, I didn't spend any more time refining it.  It is really neat to be able to run all four voice memories from the keyboard now however.  I had been punching the buttons on the MFJ, previously, and it sure got annoying chasing that light weight box accross the desk.  

Good luck,

Bob Evans
N5DU
 
  >>  Is it possible to use the MFJ voice keyer remotely through TRLOG?

  >>  Does anyone know where I can find instructions and a schematic for a
  >>  circuit to key it?

  >>  Thanks

  >>  KI0MB
  >>  Brian
  >>  brnsmth@i1.net

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