[Hallicrafters] Need info on Halli prototype RF Analyzer

[pmills7 at houston.rr.com]

Hello,

I am working on a Hallicrafters RF Analyzer....probably a prototype.  You
can
see a picture of one (not this one) at this link.

http://www.w9wze.org/Equipment/Photos/I/Prototype_RF_Analyzer_K9ZE.jpg

In my unit, all the tubes are removed except for the scope tube and the
sockets are
not labelled as to type.  There is one octal socket, two 7-pin miniature
sockets, and
one 9-pin miniature socket.  Obviously, I can tell where the octal and 9-pin 
tubes
go but one of the 7-pin ones is a 6CB6 and the other is a 6AU6 and their 
pin-outs
are so similar I can not tell which goes where.

Does anyone have a schematic or any info they can share?

thanks, 73,
Phil
W5BVB