Note: Read this Instruction Manual carefully and keep it handy for future reference. Safety Precautions Note that people with an electronic medical implant, such as a pacemaker, should not use a Body Composition Monitor as it passes a low-level electrical signal through the body, which may interfere with its operation. instructional video on tube type amateur radio equipment ,Example is a WW2 ARC-5 rig.The ARC-5 radios were used by US forces in WW2 in fighter planes ,bombers etc. I The radios are very rugged and COMMAND SETS. The "Command" radio is a description of the radio function, rather than a specific model. BC-453 . Frequency coverage: 190-550 kcs Intermediate Frequency: 85 kcs Valves: 12SK7 (VT131) RF amp, 12K8 (VT132) mixer, 12SK7 (VT131) first IF amp, 12SK7 (VT131) second IF amp, 12SR7 forum.near-fest.com Manuals and schematics are available free from many online sources. BAMA has available the correct manual for the BC-348 J, N and Q versions. The schematic available on BAMA for the J, N and Q is actually for the earlier versions and is not usable for the J, N and Q versions. Additonal BFO Circuits Unmodified BC-453 BFO "CW Oscillator" MMF = pF BC-453 Schematic : Basically to use the BC-453 Z4 coil you have to disconnect the primary L12 and then use the secondary L13 in a Colpitts circuit. In addition some capacitors are cut and some basic rewiring is in order. A SSB Transceiver From The BC-453. In the early 1960s Ernie Mason, W6IQY (SK), who lived in San Diego, CA, designed and built a number of versions of a Single Side Band (SSB) transceiver using the BC-453 low frequency navigation receiver of the SCR-274-N system. The ARC-5 Pages. This page lists links to various files concerning the AN/ARC-5 and SCR-274N series of receivers and transmitters. 1) The complete AN/ARC-5 Military manual in PDF format. 7) "Command Sets", in PDF format. 8) Receiver, Radio, BC-453-B. Receiver, Radio, BC-453-B. Display Status: This object is not on displa