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[AMPS] tuning capacitor & insulator

To: <amps@contesting.com>
Subject: [AMPS] tuning capacitor & insulator
From: km1h@juno.com (km1h@juno.com)
Date: Fri, 18 Dec 1998 01:27:43 -0500


On Thu, 17 Dec 1998 16:25:34 -0800 Rich Measures <measures@vc.net>
writes:


SNIPPED


>>No criticism of Rich's particular design; the limitation is in the 
>tubes
>>themselves.
>>
>?  Did you perhaps presume that the 7580 has the same power capability 
>as 
>a 4CX250B?

Presumption or fact Rich?  Yes the 250R and 7580 ( not exactly the same
tube either) have somewhat different specs than the 250B ,  but they
still have identical cathode emission.
So due to internal design only the R version is a bit more linear but
still suffers from the same maximums as the 250B.
I went thru this at length when Collins Engineers introduced the
AN/URC-32 to the Navy and I was part of the evaluation team ( as a lowly
tech that did all the real work !) 

73  Carl  KM1H


>>
>-  later, Ian
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  
>
>
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