[AMRadio] 75A-2 power consumption

John Carrington, M.D. jmc05 at charterinternet.com
Thu Feb 19 16:11:42 EST 2009

I'm wondering if I don't see any filament glow with that tube... I'm going
to be tempted to  bite on the Ebay ads that just replace all tubes... the
set for this receiver is 69 bucks.


From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of WA5AM
Sent: Thursday, February 19, 2009 1:02 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] 75A-2 power consumption

On Thu, Feb 19, 2009 at 2:51 PM, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:

I thought it was closer to 90v to fire that tube, Brian - maybe I'm
mistaken. I'd run it up at least to there, if the tube is dead, it
won't conduct so it matter.

~ Todd,  KA1KAQ/4

Could be Todd.  The one graph I found appeared to show it conducting at
about 62 volts, but I may have misinterpreted it.

Thanks man!


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