Re: valve cooling?

From	JMB99 <mb@nospam.net>
Newsgroups	uk.tech.broadcast
Subject	Re: valve cooling?
Date	2026-06-29 14:44 +0100
Organization	A noiseless patient Spider
Message-ID	<111tssi$cpfe$1@dont-email.me> (permalink)
References	<111ru0g$3optr$2@dont-email.me> <nadchdFi7n9U1@mid.individual.net> <1rxfqp9.1ul41eq7azasbN%snipeco.2@gmail.com> <o6e44lt3aqnb5hdhukrccdjlcu6f877204@4ax.com>

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On 29/06/2026 11:04, Roderick Stewart wrote:
> Another memory of Droitwich was the fact that any workbench
> oscilloscope at Wood Norton with an open circuit probe would display
> not a clear thin horizontal line as you'd expect with no input signal,
> but a fuzzy line, pulsating in an apparently random manner. My
> curiosity piqued, I eventually found with the aid of a portable radio
> that the pulsations weren't random at all but perfectly synchronised
> to the audio on Radio 2. FM reception was rubbish there, but you could
> easily pick up the longwave signal without even a tuned circuit.


Criggion was even better, their party trick was to draw a spark off 
someone's nose in the coil chamber as well as a 5 ft fluorescent tube 
lighting up as someone held it.

You also seemed to 'hear' the pulses going out every five seconds(?)

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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