No,Garey, I will defer to your infinitely better knowledge,in most
everything radiowise,,,thanks for the info!!
Bud
-----Original Message-----
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of Garey Barrell
Sent: Saturday, September 10, 2011 7:44 AM
To: 'drakelist'
Subject: Re: [Drakelist] Leaving tube radio on
Bud -
Not really, compared to the heat and _mechanical_ shock each time it's
turned on.... For cathode
type tubes, (most small receiving tubes and some transmitting tubes,) what
'wears out' in a tube is
the electron emitting cathode coating. Weak tubes are often a result of the
cathode coating being
damaged (by on / off cycling?) rather than a 'worn out' filament. Another
cause of tube 'failure'
is shorts between elements, some developing from small chunks of cathode
material breaking off, due
to temp cycling?
I still think it's better to leave tube gear ON if you intend to use it 'in
reasonable period of
time'. If you're not going to use it for a day or two, leave it off, but
if you're 'likely' to use
it again the same day, leave it ON. Assuming of course that it has adequate
cooling, and is
properly fused.
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