[R-390] Navships manuals

[Roger Ruszkowski]

Larry, You ask about Navship manuals.  The Army signal corps taught the R390 as part of a radio teletype long haul communication systems.The US Navy, Marines, Embassies, and Air Force also utilized this same long haul communication system hardware. RTTY was copied to punch tape. Printed from punch tape to paper.Copied punch to punch and edited on the fly to an error free tape. Put a new mimeograph stencil in the TTY printer instead of paper.Read the punch tape and print to the TTY printer.Put the mimeograph stencil in the mimeograph machine and crank out 50 copies of travel orders, promotion orders or awards.Save that good punch tape in backup as more copies may be needed and the  mimeograph stencil maxed out its ink doing the first 50 copies.We are out 20 years before the electrostatic copy machine, (Xerox). Keyboard to punch tape memory on the transmit side before sending with edit capability.  Radio was mobile.RTTY was mechanically ahead of everyone else offering security.HF two tone RTTY receivers were electronically ahead of everyone else offering a different form of security.Rock on crystal transmitters may have been easier to find but not copy with out electronic detector and mechanical printer but we had the best fastest most reliable system and secure system. Very few players had the ability to even eves drop on our military communication.And then we added real encryption to the plain text. Every branch of the services had their own training school and manuals for the R390 receivers. Manuals for the use of the receivers in the communications system as used in their branch of service existed. Manuals for the periodic inspection, cleaning, alignment and repair of the receivers all existed were read, used, and some times saved. The R390.net web page group would host a PDF copy of the manuals if they are not already listed on the site and downloadable. No free lunch. some one has to scan a paper copy to pdf and submit the PDF for posting. If any one looks your name will appear as the contributor of the PDF file. Such fame we offer to each other. Copies of the manuals from the different branches of the service have come into the "surplus market" through the same processes. Collins did the original manuals for the receivers they had designed and manufactured the receivers under a joint Army Navy contract.Other branches of the military had their copies in their book sets that looked all the same setting on the shelf.  Roger