> >> The lack of sufficient inductance in the filament choke caused the tube
> >> to dissipate too much heat in the anode even when at idle.
>
> Could someone explain how this can be so?
It can't be so. It is impossible.
> Or perhaps the choke is supposed to be a series impedance at 60Hz, keeping
> the filament current and thus the emission, down?
> (No, I'm not serious!)
> 73
> Peter G3RZP
Daves friend might have been joking, or perhaps he ran the amp on
CB. The choke is resonant on 26.9 MHz, and the tube will cook if
you try to use it on CB because output will be low.
Efficiency on the CB band will triple if you change the chokes.
73, Tom W8JI
w8ji@contesting.com
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