Hammarlund SP-600-JX and SP-600-J (issue 6) manual, reprint.

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This is a digitally copied and enhanced manual for the Hammarlund SP-600 issue 6, dated May, 1956.  It has been copied from an original and is clear, clean, and easy to read.  It is printed on premium 24# paper with heavy covers and bound with a plastic comb.  No more struggling with unreadable photocopies!

It measures 8 1/2" X 11" with about 40 pages with a large one piece 11" X 19" fold out schematic and a large one piece 11" X 17"wiring diagram.  Included is the supplement for use with models SP-600-JL and SP-600-JLX and the addenda for use with R-274B/FRR. Topics Include:  general description, circuit description, installation, operation, maintenance, alignment, conversion for rack mounting, tube socket voltages, tube socket resistances, oscillator alignment frequencies, signal inputs at IF and AF stages, parts list, connection diagram, and schematic.