[Heath] SB-620

[George Babits]

I recently acquired an HeathkKit SB-620 "Scanalizer."  I think this is some 
sort of panadaptor but I have no information.  I put a signal into it and 
get a "pip" around 3380 kc or so.  I'd like to convert this to a 455 kc IF. 
The one site with downloadable HeathKit manuals doesn't appear to have one 
for the SB-620.  Anybody got one they can share?  Or, lacking a manual, any 
other information would be helpful.

Thanks,
George
W7HDL