The RF front end is obviously a traditional Hammarlund SP-600 but the IF section is solid state circuit board construction. The 1.35-54mc coverage has a 200kc bandwidth output, the 0.54-1.35mc portion is narrow band coverage. Meade, Maryland for interpretation and analysis. The reels of tape generated would be sent to the NSA in Ft. Browse the latest local listings for all things ham radio and related items available for sale near you with the most popular online marketplace, NL Classifieds. They were usually used in banks of 5 receivers and connected to video recorders for signal intercept work in the HF spectrum to detect enemy radio traffic. Find Snow Plow For Loader in Ham Radio Find ham radio & related items to buy & sell. These models used only 9 tubes, dual voltage regulators, 8 printed circuit boards and a 200 khz bandpass filter. HAMMARLUND SP-600 PLASTIC FUSE COVER NOS Brand New C 35.45 Buy It Now +C 19.04 shipping from United States Sponsored REPRINT TM 11-851 HAMMARLUND SP-600 MILITARY MANUAL R-274A 1952 200p Brand New C 59.08 Buy It Now +C 52.52 shipping from United States Sponsored HAMMARLUND SP-600 TUBE KIT Brand New C 182. This is a "hybrid" SP-600 manufactured circa 1968. Department of Defense (NSA) by Hammarlund manufacturing. This is a cold war SIGINT receiver developed for the U.S. Hammarlund SP-600 R-1511/GR SIGINT Receiver, Vintage Cold War 0.54 - 54.0 MHzAvailable for sale is a Hammarlund R-1511/GR signal intercept (SIGINT) Receiver covering 540 KHz - 54.0 MHz.
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