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Re: valve cooling?

From Andy Burns <usenet@andyburns.uk>
Newsgroups uk.tech.broadcast
Subject Re: valve cooling?
Date 2026-06-30 10:44 +0100
Message-ID <nahhf3F8ssqU1@mid.individual.net> (permalink)
References <111ru0g$3optr$2@dont-email.me> <nadchdFi7n9U1@mid.individual.net> <1rxfqp9.1ul41eq7azasbN%snipeco.2@gmail.com>

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Sn!pe wrote:

> Marconi BD272Cs with two BY1144Ls in class C push-pull in the final
> and similar (I think in class B) in the modulator.  Final and modulator
> each had 11kV DC at 26A on the anodes and ran very hot.

I found it odd that the power to each valve was given in hp, but I 
suppose mains electricity was relatively new-fangled for many people to 
be familiar with kW?

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Thread

valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-28 20:51 +0100
  Re: valve cooling? Andy Burns <usenet@andyburns.uk> - 2026-06-28 20:55 +0100
    Re: valve cooling? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-06-28 22:59 +0100
      Re: valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-29 04:39 +0100
    Re: valve cooling? snipeco.2@gmail.com (Sn!pe) - 2026-06-28 23:01 +0100
      Re: valve cooling? Roderick Stewart <rjfs@escapetime.myzen.co.uk> - 2026-06-29 11:04 +0100
        Re: valve cooling? Charles Hope <clh@candehope.me.uk> - 2026-06-29 10:30 +0000
          Re: valve cooling? JMB99 <mb@nospam.net> - 2026-06-29 14:48 +0100
            Re: valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-29 17:14 +0100
              Re: valve cooling? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-06-30 09:04 +0100
                Re: valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-30 09:27 +0100
                Re: valve cooling? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-06-30 10:28 +0100
                Re: valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-30 18:56 +0100
                Re: valve cooling? JMB99 <mb@nospam.net> - 2026-07-01 13:07 +0100
                Re: valve cooling? NY <me@privacy.net> - 2026-07-01 15:46 +0100
                Re: valve cooling? Old John <watcombeman@yahoo.co.uk> - 2026-07-01 06:26 +0000
                Re: valve cooling? Max Demian <max_demian@bigfoot.com> - 2026-07-01 11:48 +0100
                Re: valve cooling? liz@poppyrecords.invalid.invalid (Liz Tuddenham) - 2026-07-01 12:11 +0100
        Re: valve cooling? JMB99 <mb@nospam.net> - 2026-06-29 14:44 +0100
      Re: valve cooling? Andy Burns <usenet@andyburns.uk> - 2026-06-30 10:44 +0100
        Re: valve cooling? "J. P. Gilliver" <G6JPG@255soft.uk> - 2026-06-30 19:03 +0100

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