In article ,
"Antonio I0JX" wrote:

I believe that model 3117 cannot be readily converted to AC operation (e.g.
by removing the vibrator and feeding 6VAC o 12VAC into its socket), as the
transformer is sized for the vibrator frequency, that is about 120 Hz. At 50
or 60 Hz the transformer would presumably draw too high a current under no
load conditions.

Tony-

It might be worth a try with 6 or 12 VAC. I'd go for 12.6 VAC with a 10
Amp fuse to start with for protection.

According to the manual, it draws 9 Amperes at 13.5 VDC when
transmitting. That should be within the capacity of many modern DC
power supplies designed for a 100 Watt HF rig. Getting a good vibrator
might be a problem!

Fred
K4DII