Check the listing for details. 1960's MONARCH FM-100 FM Tuner Tubes Tested. Condition: Used. Listed at 69.99 USD. Up for sale is a 1960's, MONARCH, FM-100, FM, tube-driven, tuner. Rear grill, cover and rear screws have light surface rust. Light corrosion throughout inner floorboard as seen in the photos. All the tubes illuminate. Not tested for anything beyond a "proper", tube, power-up. See the many photos provided. The images are part of the description. More technical information can be found below. Make it yours! Number of Tubes7Valves / Tubes6AQ8 6AQ8 6BA6 6BA6 6BA6 6AL5 6X4Main principleSuperheterodyne (common)Wave bandsFM Broadcast Band OnlyPower type and voltageAlternating Current supply (AC) / 117 VoltLoudspeaker- For headphones or amp.MaterialMetal casefrom Radiomuseum.orgModel: FM Monaural Tuner FM-100 - Monarch Electronics Int. Inc.;ShapeBook-shelf unit.NotesTuner, mono, with MPX output.Made in Japan