|[AMRadio] Re: Need ID Help for 1930's Transmitter|
brett.gazdzinski at verizonbusiness.com
Thu Sep 14 14:11:47 EDT 2006
I think there was someone making the caps, listed in the
back of electric radio?
I wanted to get some for my P-P-P 100TH mod deck but never
got around to it.
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Donald Chester
> Sent: Thursday, September 14, 2006 2:00 PM
> To: amradio at mailman.qth.net
> Subject: [AMRadio] Re: Need ID Help for 1930's Transmitter
> The 250TH looks very much like an 806, and as I recall, the filament
> voltage is the same. It would be easy enough to fabricate
> pin adaptors if
> you can't find some commercially made ones. Eimac made two
> versions of the
> 100T, 250T and 450T series, some of which had smaller (807
> size) caps and
> others, that had simple pins coming through the glass. In
> fact, some of the
> new-in-the-box Eimac tubes I have seen with caps, used caps that were
> attached over the pins with setscrews, and could be removed
> to accomodate
> pin connectors as needed.
> I think a 250TH would be much closer to the original than a
> graphite plate
> bottle like the 810. Hovever, I prefer the bottle style of
> tube, since they
> seem to be more durable. Of the 806/250T/H-K style tubes, I
> have found a
> much higher percentage of duds, even with N.O.S. tubes, than
> with graphite
> plate tubes.
> Don k4kyv
> This message was typed using the DVORAK keyboard layout.
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