So there's a LM2940-11.0? Means 11.5 volts is the low limit on the input
voltage. After some use a poor battery will drop down that far under
load, and it doesn't take much of a resistive connection at the fuses in
the cable to add drop. That's a perennial problem in some Kenwood
radios.
Normally a crimped connection when really crimped with enough squeeze
gets a cold weld that's more reliable than soldering. And avoids wicking
solder up between the strands to make the flexible wire snap off when
bent too many times.
The National Electrical Code outlawed soldered main connections about
1939 because too few electricians could do it right, though the code
committee admitted a good soldered connection beat most pressure
connections.
If a 7 amp hr gel cell holds the Scout, then any battery that doesn't
has to have a problem!
73, Jerry, K0CQ
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