This Original US Air Force Publication has the following Manuals which were laser printed from the original master, for the Hammarlund SP-600 JX 17. (1) Handbook Operating Instructions (2) Handbook Service Instructions (3) Parts Catalog (4) Handbook Overhaul Instructions, and Applicable supplement updates to February 28, 1958 Unlike on line manuals and most reproductions, this manual has excellent resoloution and photographs. It is bound with a professional spiral binder and is very easy to use because it sits flat on the table. The cover and each of the (4) individual sections are separated with 110# Stock (Thick) paper! This is a great deal on a perfect copy which is completly up to date for the SP-600 JX 17 model Hammarlund Receiver.