[aprssig] Kenwood TR-7730 backup battery?

Greg D ko6th.greg at gmail.com
Fri Apr 19 23:54:56 EDT 2013

Hi folks,

My packet station and iGate runs on an old but quite serviceable Kenwood 
TR-7730.  The rig has a connector in the back for a backup battery, but 
none is present, so any momentary glitch in power send it back to 
defaults.  I have not been able to find a battery, nor the pin-out and 
specs to fashion one of my own.

There appear to be 3 pins in a triangle formation.  Anybody know what 
the spec is?


Greg  KO6TH

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