Peter - -
>Rich says:
>
>>? ZSAC can be set quite nicely with E-screen. The primary consideration
>>is to set the dc grid potential so that virtually zero grid current flows
>>with max. drive.
>
>Sure. But that affects the peak plate current.
? agreed
> Having the screen volts set
>so that the correct peak plate current flows at Eg = 0, and then setting the
>bias for correct zero signal current is surely better?
>
? (assuming E-grid is set for virtually zero I-grid with max. drive) the
indicator that something is amiss is when E-screen exceeds the max.
allowable potential when ZSAC is set to the recommended amount. If that
be the case, then the next lower value of grid-terminating R is one
solution.
>The business of 'overdrive' caused by reliance on ALC (which is quite likely
>defective in design) is another matter.
>
? The weaknesses in the transceiver's ALC are automatically taken into
account by adjusting E-grid so that virtually zero current flows when
max. drive is applied. I contend that it is important Not to
subsequently change the E-grid adjustment for any other purpose.
>.....
- later, Peter
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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