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Path: utzoo!watmath!clyde!burl!mgnetp!ihnp4!houxm!houxz!vax135!cornell!uw-beaver!tektronix!hplabs!sri-unix!stephany.WBST@XEROX.ARPA
From: stephany.WBST@XEROX.ARPA
Newsgroups: net.ham-radio
Subject: Re: Help ---- Oh where is the tube I need!
Message-ID: <12180@sri-arpa.UUCP>
Date: Tue, 7-Aug-84 12:38:00 EDT
Article-I.D.: sri-arpa.12180
Posted: Tue Aug  7 12:38:00 1984
Date-Received: Fri, 10-Aug-84 02:07:10 EDT
Lines: 24

The26A7 is carried by :

Fair Radio Sales Co. Inc
PO Box 45802
Lima Ohio 45802 

or phone 419223 2196 if you have master charge.

Their prices are the LOWEST in the country.

If that's the audio output tube they have a transitor replacement for
it.  It is also military surplus.

I have an R392 at home and it works great.   You have to have a
regulated power supply on it if you want to work SSB.  The filament to
cathode capacity of the BFO tube is across the BFO coil.  So as the
filament voltage varies the frequency of the BFO goes up and down.  If
the supply is unregulated, the filament goes up and down as the heater
on the crystal calibrator goes on and off causing the BO to drift up and
down.  In the Army, this receiver was on a vehicle battery and the
regulation was good enough so that this was not a problem.  I wrote a
short article on this for QST a few years ago. 

				Joe  N2XS   (Spark & tubes forever)