At 08:00 AM 10/2/00 +0100, Peter Chadwick wrote:
>
>Geo says;
>
>>The two Collins amps, 30L-1 and 30S-1, are the only units that I've ever
seen
>>with phase comparator tuning.
>
>The (admittedly partial) circuits that I have for those two amplifiers do not
>show a phase comparator for tuning, but an amplitude comparator. When the
>loading is correct, there's a definite ratio of input volts to output volts
>across the tubes. You can have the 180 ( or 0 degree - depending on circuit)
>degree phase shift across the tube, but still have the loading wrong.
>
>It's a really useful gizmo. Also appeared in various Marconi military tx's in
>the last 1950's, and in the ARRl handbook in a 3-1000Z amp in 1970.
>
>
>73
>
>Peter G3RZP
>
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
Help ALL:
I've misplaced my Collins manual which spells out and answers my question.
So, I need everyone's help!
Q: What is the Collins Radio recommended length of coax between the output
of the exciter to the input of the Collins 30l-1.
Please reply direct(off the reflector) to me: Leewical@aol.com
TNX
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
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