[julianburke]

I made a big boo boo! I went back to my museum and the first digit was partially covered by a little dirt and I did not look closely enough.
It is a 660, NOT a "360". Now lets go somewhere with this!!

Can anyone tell me what the tube layout is?


I just picked up a Hickok model 660 bar/crosshatch generator (all tubes) from the 1950's in a neat little black oilcloth carrying case. These are rather scarce to find as they were expensive at the time and I love them just the same. This one should work but the person who had it took all the tubes out of it and all of the sockets are only labeled "V1,V2 etc". If I remember correctly many of them were 12AT7 or 12AU7's and some others. Do any of you out there have any info on the tube charts? (or original manual) He even pulled the 3.58 crystal out of it--said at one time he was going to make something else of it gutting it out. Glad he didn't as it is too neat to disassemble and part out!