[AMRadio] Max power off from plate current dip problem 32v1...

[Donald Chester]

My old buzzard style link coupled tanks give maximum output right at the dip 
when the load is properly tuned so that the transmitter is seeing pure 
resistance and no reactance.

Tube type transmitters with fixed capacitors and variable inductors in the 
tank, the circuit used in practcially all broadcast transmitters built from 
the mid-50's and later, give maximum output slightly off the dip.

I once read why this is true, and the mathematics were simple, clear and 
specific, but over the years I have forgotten the reason, and cannot find 
the reference that explained it.

Can anyone expain why changing the resonant frequency of the tank circuit by 
varying the tuned circuit inductance would affect the behaviour of PA plate 
current differently from varying the capacitance?

Don K4KYV

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