[SixClub] sixclub digest 12AX7 Tubes

[Roger (K8RI)]

James wrote:
> hi,
>
> Plenty available here, reasonable pricing
> http://www.tubedepot.com/12ax7.html
>   
Some are good and some...well... OTOH I see some nice prices on New 
811's and 813's or about twice what I've been paying for surplus.
> as well as
>
> http://www.surplussales.com/Tubes-Sock-Acc/TubeSpecials.html
>   
Yah, but if it has a 3CX or 4CX, watch out.  Look at the 3CX1500A7 NOS 
(IE 8877)
OTOH they have a really good price on that 7213 u-wave tetrode for those 
that recognize the tube. A pair of those in that 6 and 2 meter amp in 
the handbook would loaf at the legal limit.  Admittedly 2 X $437 is not 
for the amp on a shoestring budget, but that's a fraction of new ones. 
IIRC it's an ultra linear tube with IM in the -40 to 50db plus range.  
If I hadn't just purchased a new HF amp I'd go for a couple of those.

Down in the 6-meter region each tube is good for over 1200 out with 
relatively low drive and can do so up to around 600 MHz. It's a beefy 
tube using  coaxial construction. It's 3 3/4" in diameter and about 3 
1/4" tall with a weight of 2#. Unfortunately it does take a special 
socket which means there is little demand for them.

"To me" a gem hidden among the every day stuff.  Now watch 'em raise the 
price, but I'm afraid I'm going to have to pass anyway.

73

Roger (K8RI)
> 73 james ke4drn
>
>
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