SB230 had the 8873 final tube.
W4LM

"Dave" wrote in message
. ..
Google search seems to indicate that the SB-240 final was/is an 8873 not
two 3-500s.

Sindre Torp wrote:

Hello,

I have a Heathkit SB-240 linear amplifier. This is a prototype!!! It
matches the SB-104 line in design.
I got this one from my friend Mike Elliot (the man behind SB-104 and
Drake TR7). He is now silent key.
The SB-240 has two 3-500Z tubes, and built in power supply. I have full
documentation for it.
I have it stored in USA at the moment. I'm considering selling it for a
serious price. That's why I have not got it shipped over to Norway yet,
where I live.

I don't think there are any more SB-240 out there. I've never heard of
any.
If you have any more info about the SB-240, please drop me an e-mail.

You may take a look at it he
http://home.online.no/~sindtorp/sb240front.JPG
http://home.online.no/~sindtorp/sb240rear.JPG

Regards,
Sindre Torp, LA6OP
http://home.online.no/~sindtorp

On Mon, 6 Nov 2006 15:38:41 -0500, "W4LM"
wrote:

SB230 had the 8873 final tube.
W4LM

"Dave" wrote in message
...
Google search seems to indicate that the SB-240 final was/is an 8873 not
two 3-500s.

The 8873 was used in the conduction cooled amp (the 230 as mentioned
above) which had a front panel *similar* to the one shown below, at
least from a distance.

Also different: the entire back panel was one great big, black,
heatsink.


snip

You may take a look at it he
http://home.online.no/~sindtorp/sb240front.JPG
http://home.online.no/~sindtorp/sb240rear.JPG

Regards,
Sindre Torp, LA6OP
http://home.online.no/~sindtorp




Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com