[AMRadio] Re: WTB: 6DZ7 Tubes (Jim candela)

[Mahlon Haunschild]

Just a few additional points:

-  The 6DZ7 was ONLY made by GE, so it was a single-source tube (which 
didn't help it's popularity, I'm sure).  It's basically two 6BQ5s in one 
envelope.  It dissipates a LOT of heat in a very small package, so I 
imagine that it wasn't popular for that reason too.

-  The only amateur gear I'm aware of that used the 6DZ7 is the Heath 
Shawnee/Pawnee VHF rigs.  I have a Shawnee here that someone, who 
apparently couldn't find a 6DZ7 at the time, fabricated a neat adapter 
to allow the use of two 6BQ5s instead.

- N9TEW lists a price of $3 for the 6DZ7, assuming that he has any at 
all.  http://www.hamtubes.com/tubes/list2.htm

-  N4TT lists a price of $4 for the 6DZ7, again assuming that he has any 
at all.  Typetronics PO Box 8873 Fort Lauderdale, FL 33310-8873 954-583-1340

-  ESRC lists a price of $5 for the 6DZ7, again assuming that he has any 
at all.   http://home.att.net/~esrc/esrcs2.html

Usual disclaimers apply.

OHH!  By the way:  does anyone have a meter for a Pawnee/Shawnee that 
they could part with?  I need one.

regards,

Mahlon - K4OQ
> --__--__--
> 
> Message: 1
> From: "Jim candela" <jcandela at prodigy.net>
> To: <amradio at mailman.qth.net>
> Date: Sat, 13 Sep 2003 08:32:44 -0500
> Subject: [AMRadio] WTB: 6DZ7 Tubes
> Reply-To: amradio at mailman.qth.net
> 
> 
> 
> 	Hi Group,
> 
> 	I am looking for some 6DZ7 tubes. These are dual pentodes in a 6L6GC size
> package (octal). Each pentode is similar to a EL84/6BQ5. This is because I
> am restoring some tube type audio gear that originally used 7591's as output
> tubes. The problem is I used most of my 7591's in my collection of Central
> Electronic 20a's as a class Ab1 RF linear amplifier (~ 55 watts pep output
> from a pair, and > 10 watts AM). I converted one Fisher X-101=B amp over
> from 4- 7591's to two 6DZ7's, and that came out working wonderful. I was
> surprised. I need some spare 6DZ7's and I was hoping to find a pile of NOS
> 6DZ7's for ~ $5.00 each. I would also like to win the state lottery too!
> Anybody out there with some of these odd tubes that don't know what to do
> with them?
> 
> 	Btw, 6DZ7's were made by GE, and they never seemed to take off in
> commercial gear. Sylvania made a similar tube, the 6DY7 that appears to be
> closer to two 6AQ5's in a single envelope. Anybody know the history of these
> tubes?
> 
> 
> 	Here is a application note about 6DZ7's used as AM Ham modulators:
> 
> http://www.triodeel.com/ham1.gif
> 
> http://www.triodeel.com/ham2.gif
> 
> Regards,
> Jim Candela
> WD5JKO