[Amps] 6146 AM Modulation

[Robert Perdue]

Go to Am Phone website and post the question.  

Sent from my iPhone

On Sep 16, 2014, at 12:24 PM, Bill Turner <dezrat at outlook.com> wrote:

> ------------ ORIGINAL MESSAGE ------------(may be snipped)
> 
> On Tue, 16 Sep 2014 08:35:55 -0700, wcw wrote:
> 
>>   Anyone know the answer? 
> 
> REPLY:
> 
> It's been a long time, but in the old days we modulated a 6146 screen
> 100%.  The easy way to do this was to NOT use a separate screen
> supply, but rather supply the screen through a dropping resistor and
> tie the supply end of the dropping resistor to the hot side of the
> modulation transformer. Works great. 
> 
> If you use a separate screen supply., it becomes trickier. You would
> need a separate modulation transformer just for the screen. It could
> be done but I don't see the point. 
> 
> Also, do not use a very large screen bypass capacitor or the
> modulation will be bypassed too. About .01 uF is big enough. Guess how
> I found this out.  :-)
> 
> 73, Bill W6WRT
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