Hello Peter,
I should think that the previous AM-Transmitter tank-circuits of the 400W
class were far better designed
then todays 2KW amps.
At the beginning of the sixties I started with ham radio
and built my first amp with QB3/300 and 2xEL156 modulator.
I copied the wiresize of the Collins ART-13 and used the
original caps, coilforms and chokes as I was working for
a surplus seller at that time.
There was very little coil heating with that setup.
After a break for more then 10 years I bought a Drake-Twin.
When I took a look into the transmitter I first could not find the tank
circuitry.
Then I recognized that the enameled copperwire coil was
not the RF-choke but the tank coil !
Peter
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