|[AMRadio] Bad tubes?|
ars.w5omr at gmail.com
Tue Jan 9 22:38:48 EST 2007
Mike Sawyer wrote:
> I thought that tubes like the 250TH/TL were collected for their 'platinum
> plates?' Seems to me you could make some money with the scrap from the
Don't think those plates are platinum...
the filament is made of thoriated tungsten.
The spec sheet doesn't say what material the plate is made of.
75TH/TL, 100TH/TL, 152TH, 250TH/TL, 304TH/TL, 450TH/L, 750TH, 1000TH
Mighty impressive line of triodes Eitel McCullough came out with.
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