[Collins] 572B and the 30L1

Dr. Gerald N. Johnson g369n792j at ispwest.com
Fri Mar 30 11:30:29 EST 2007


On Fri, 2007-03-30 at 07:20 -0600, Frank wrote:
> Glen Zook wrote:
> > Air flow is one reason, hot air rises and both the
> > 30L-1 and SB-200 are already marginal where air flow
> > to cool the tubes are concerned.  Turning the
> > amplifier on its side would reduce the air flow
> > considerably.
> > 
> > Then one would have to look sideways to read the
> > meter, dials, etc.  Also, the linear would just look
> > "funny" when sitting beside the rest of the S-Line,
> > SB-Line, etc.
> 
> Have you considered using 811s?
> 
> They are cheaper, run cooler, fit better, and you get just 
> about the same power out.
> 
> Regards,
> Frank Kamp

And they won't fry the plate transformer or the output tank components
that are no longer made.

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer



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