[AMRadio] RE: Modulator design needed


W7QHO at aol.com W7QHO at aol.com
Tue Mar 28 12:23:34 EST 2006


In a message dated 3/28/06 7:36:46 AM, garyschafer at comcast.net writes:


> I think if you look at the grid voltage with a scope you will find that it
> does go into AB2 on modulation peaks.
> 
Yes, the grids do go somewhat positive but the peaks are badly distorted.   
Not square clipped but rather rounded off, hence my characterization of 
AB"1.25"   The stock bias supply is not very stiff either so flops around when any 
grid current is drawn.

Dennis D. W7QHO
Glendale, CA



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