[Hallicrafters] Sylvania 0A2

[Richard Knoppow]

----- Original Message ----- 
From: "mac" <w7qho at aol.com>
To: "L L bahr" <pulsarxp at embarqmail.com>
Cc: <dhallam at knology.net>; <hallicrafters at mailman.qth.net>
Sent: Thursday, February 09, 2012 4:07 PM
Subject: Re: [Hallicrafters] Sylvania 0A2


Makes the firing more reliable, particularly in situations 
where the
initial voltage level provided by the circuit is marginal 
for ignition.

Dennis D.  W7QHO
Glendale, CA

    I have a somewhat different understanding, namely that 
the radioactive material is present to insure firing when 
the tube is in the dark. Light will initiate the ionization 
but sometimes tubes won't fire in total darkness.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com