The R-100A is a kit receiver produced by Allied Radio. Introduced in 1962 as an upgrade to the R-100, the 9 tube R-100A is a transformer-operated single-conversion general coverage receiver with calibrated bandspread for the 80 to 10 meter ham bands. The matching S-8A speaker was also a kit. The S-meter on this radio was an optional accessory as was the crystal calibrator. The R-100A has a Q-multiplier and a BFO built in. The 9 tubes are very efficiently used including combination triode/ pentode tubes for dual function.
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