[AMPS] Linear with 4CX800A

[Lane C. Zeitler]

I recently requested a manual for the QRO amp that runs a pair of the
subject tetrodes. Response was only after a fresh $50.00 is rcv'd. I
declined. That's a lot of money for a schematic and parts list.

Lane 
KM3G
San Diego

----------
> From: km1h @ juno.com <km1h@juno.com>
> To: amps@contesting.com
> Subject: Re: [AMPS] Linear with  4CX800A
> Date: Saturday, September 06, 1997 3:51 PM
> 
> 
> On Sat, 6 Sep 97 11:10:02 -0800 Rich Measures <measures@vc.net> writes:
> 1.. Grid current -/- make the bias V adjustable, and set it for 
> >virtually  zero grid current with max. drive applied.   /  Using the
> bias V adj. 
> >to 
> >increase ZSAC  results in grid current, and distortion.  The best way 
> >to increase ZSAC is to increase screen V, as long as you do not exceed 
> >the  max. rating.  
> 
> Here we go again!  HORSEFEATHERS Rich. Lets get off the theoretical and
> into the living world. 
> Use a fixed voltage screen supply and vary the bias for proper  idle
> current. It is easy and repeatable AND with modern tubes the IMD will
> still be below the garbage from most riceboxes. 
> I am sure I will get grief from a few but the real object here is to
> produce RF with a decent and acceptable level of crud. No one said it has
> to be perfect.  Remember GIGO. 
> As I mentioned earlier, your first priority should be obtaining Alpha and
> QRO manuals. 
> 
> GL....Carl   KM1H
> 
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