At 09.57 2005.03.08 -0500, you wrote:
>As I recall:
>12AX7-- Twin triode audio tube very rugged construction to minimize microphonics
>12AT7-- Twin triode with reasonable power dissipation. Could be used as high as about 600mhz in Ham applications
>12AU7-- Pentode RF/IF/Mixer applications
>
>No, I don't want to go back. THESE are the good old days.

Expecially for portability! *g* ;->



>John Ferrell
>http://DixieNC.US
>
>----- Original Message ----- From: "Olin Lathrop" <olin_piclist@embedinc.com>
>To: "Microcontroller discussion list - Public." <piclist@mit.edu>
>Sent: Monday, March 07, 2005 1:00 PM
>Subject: Re: [EE] Wire wrapping insight needed!
>
>
>>John Ferrell wrote:
>>>"12AUX7"? I think you mean 12AX7...
>>
>>I don't have my RCA manual in this office, so I'll have to check later.  I
>>do remember there were two version, one was a special lower noise version of
>>the other.  The low noise version was a popular front end for microphone
>>amplifiers.
>>
>>
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