Couldnt find an AA type battery pack listed for the radio.........its usually the easiest way to fit a 13.8v to whatever voltage the radio takes converter.
make up a small pcb with voltage dropper chip ,decouple everything robustly to kill alternator whine,fit it inside AA empty case soldering the output to the battery terminals and just clip on to radio............do your sums right to ensure voltage dropper chip can handle max TX current for (at least) 50% duty cycle........and add overvoltage protection...............personally I would over engineer it to save popping the radio,lemme go see what I can find............
I have just looked at the schematic............I downloaded one from an 'interesting' site..........polarity protection and some decoupling/tank caps are present just after the battery connections.
If I could figure out how to post the complete service manual ,schematic,block diagram and circuit description ....I would!
A quick scoot around the schematic shows.............very little internal protection.......one ikle zener diode..............one of the first components to get the power is ic1 ,a mos ic,the final driver and output stage also gets fed almost directly and the o/p tranny it is a fet type.Appears to be 4 main 5v feeds........I take it the battery is in the 6 to 7.2v range?
If you have a duff nicad pack and the know how it may be an interesting project
