This is a
digitally copied and enhanced manual for the Drake SPR-4 receiver.
It 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
The SPR-4 instruction manual is about 8 1/2" X 11" and consist of
a total of about 65 pages with a large one piece
26" foldout of the schematic. Topics include general
description, specifications, installation, operation, principles of
operation, alignment, accessories, DC voltage chart, RF voltage chart,
bottom chassis view, crystal chart, diagrams of many circuit board
assemblies, and schematic.