fYeah Buddy,
If folks would read about the theory and operation of RF amplifier tubes the
problem wouldn't be a surprise nor incorrectly attributed to a specific
brand of amplifier. Check out the reading materials: below
http://www.cpii.com/docs/related/22/C&F1Web.pdf (highly technical but good
reading)
www.arrl-sc.org/Tech%20Presentations/Linear%20Amplifiers.pp ( for the plug
& play operator; they list SB-220 as 'popular')
http://www.kk5dr.com/Tubes.html (great reading)
Use it or lose it applies to lots of man made appliances but certainly RF
amplifier tubes ;-)
Enjoy,
dave
wa3gin
----- Original Message -----
From: "Mike Waters" <mikewate@gmail.com>
To: "Rex Lint" <rex@lint.mv.com>
Cc: <amps@contesting.com>
Sent: Friday, April 15, 2011 3:41 PM
Subject: Re: [Amps] Which heathkit amp would you choose?
> If I sounded like I didn't like the SB-220, I didn't mean to. I was simply
> warning the OP of a real problem that he is likely to run into if he
> purchases an amp with 3-500Zs, if that amp has not been used for a long
> time.
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