[ARC5] BC-221E converted to loctals and high voltage?

John Franke jmfranke at cox.net
Fri Jul 25 11:44:24 EDT 2008


According to TM 11-300, the BC-221-E made by Philco Corporation was designed 
to use loctal tubes.  But the high voltage was 135V.

John  WA4WDL

----- Original Message ----- 
From: "Tom Bridgers" <Tarheel6 at msn.com>
To: <arc5 at mailman.qth.net>
Sent: Friday, July 25, 2008 11:25 AM
Subject: [ARC5] BC-221E converted to loctals and high voltage?


> Recently purchased a BC-221E that had been converted to loctal tubes and 
> had a add-on power supply that fed about 350 volts under load to the 
> meter.
>
> Does anyone happen to have any information on why a BC-221 would be 
> converted to loctals and why they chose to run the meter at such high 
> voltage? For example was this suggested in QST, CQ or other type radio 
> mag's of the 50's?
>
> I have several BC-221 type meters and this is the first one that I've 
> encountered with loctals and high voltage...
> Thanks in advance for any comments or references,
> -tom
> p.s. --  The meter also had been installed in a home-made, wooden 
> cabinet --  which I think is pretty neat.  The upside is that it's much 
> easier to operate than with the original cabinet, but of course the down 
> side is it's not original and probably has less value as a collectible.
>
>
>
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