[Amps] 'gettering 572B'

[Alek Petkovic]

Ha ha. Try 7.1V for the AL-811H.

No wonder there's such a good market for 811A and 572B tubes here in Australia.

73, Alek
VK6APK


At 12:53 AM 26/06/2009, donroden at hiwaay.net wrote:
>I think it is more important to keep filament voltage at or below 6.3vac.
>Before modification, mine on a 30L-1 was over 6.9 standby and 6.7 under load.
>
>Don WA4NPL
>
>
>
>
>Quoting Roy <royanjoy at ncn.net>:
>
> > Svetlana states its 572B has getter on the plates. Needs only to 
> be operated
> > under power.
> >
> > 73,   Roy    K6XK
> >
> >
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> >
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>
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