Daddio,
I'm looking at a CB manual dated August1950. Nothing specific seems to be listed.
However, I'm remembering my basic electricity. Shouldn't resistance between the primary ground and the Primary + be zero, as would the leads of the secondary? Not open, but 0 ohms. The coils are wraps of wire, therefore with very little inherent resistance. It's the relationship between the number of turns in each that defines the current/voltage output.
Somebody else validate my theory please. Your mileage may vary.
Cutter