AT1 Question

[Steve Smith]

In the stock AT-1, the oscillator is -not- keyed, only the PA cathode.
The oscillator runs whenever the plate switch is "on".  So you are
correct, the key should not be closed unless there is proper excitation.

73.......Steve Smith WB6TNL
          Oxnard, CA  USA
           "Snort Rosin"


On Tue, 23 Mar 2004 17:33:43 -0500 Mark S Graalman <wb8jkr at JUNO.COM>
writes:
>   I'm not familiar with the AT1, but it may be possible that
> in the original setup the Oscillator and final were cathode keyed
> at the same time, and when you placed the oscillator cathode to
> ground you also keyed the final and if there is little or no RF
> drive present then no grid leak bias can be developed and
> thus the high idle plate current.
>
> Mark  WB8JKR

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