[R-390] "Fake" 12AX7 tubes on e*pay

[SAM LETZRING]

I needed a couple of 7027's for a couple of old Globe Scout's I'm
rebuilding- found some Chinese 6L6GC's cheap and will try them- have some
SOvtek also so will do some comparison.

Sam


----- Original Message ----- 
From: "Roy Morgan" <roy.morgan at nist.gov>
To: <pulsarxp at earthlink.net>; <r-390 at mailman.qth.net>
Sent: Friday, February 17, 2006 7:18 AM
Subject: Re: [R-390] "Fake" 12AX7 tubes on e*pay


> At 08:25 PM 2/16/2006, pulsarxp at earthlink.net wrote:
> >What Eastern block country makes a good 6L6 tube these days?
>
> I don't have experience with 6L6 types but I can tell a story about
EL34's,
> or E34L's actually:
>
> A friend of mine has a Dynaco Stereo 70 and we retubed it with Tesla
> E34L's. He had the bottom cover loose and that shorted the bias to one set
> of tubes. While listening to the thing, he noticed the plates glowing
> rather strongly red.  We don't know how long they's run that
> way.  Immediate shutdown was followed by re-testing of tubes and bias and
> so on. The tubes tested exactly as they had upon installation and have
been
> running just fine ever since.
>
> My suggestion: if you can get any Tesla 6L6GC type tube for affordable
> prices, do it.  Beat the devil out of them and report your experience.
>
> Roy
>
>
>
> - Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
> 7130 Panorama Drive, Derwood MD 20855
> Home: 301-330-8828 Cell 301-928-7794
> Work: Voice: 301-975-3254,  Fax: 301-948-6213
> roy.morgan at nist.gov --
>
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