718-FMX (718FM series X)

Howard Radio Company; Chicago, IL

  • Year
  • 1941/1942
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 44625

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 14
  • Main principle
  • Superhet with RF-stage; ZF/IF 465/4300 kHz; 2 AF stage(s)
  • Tuned circuits
  • 8 AM circuit(s)     10 FM circuit(s)
  • Wave bands
  • Broadcast, 2 Short Wave plus FM or UHF.
  • Details
  • Changer (Record changer)
  • Power type and voltage
  • Alternating Current supply (AC) / Two versions: 40 or 60 cycles 105 - 125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 718-FMX - Howard Radio Company; Chicago,
  • Shape
  • Console with any shape - in general
  • Notes
  • The Howard model 718-FMX (see sticker), also called 718-FM series X, has a tuning eye, push-pull audio amplifier with bass enhancement. It has a turntable from Webster Chicago and a Jensen loudspeaker. Power consumption is 115 watts plus record changer. Broadcast 550 - 1700 kc, SW: 1,7 - 5.5 mc and 5.5 - 18 mc plus FM 41 to 50 mc. Careful, Howard made the first models 718 with 12 tubes and without FM - like the consoles 718 (1940), 718C (1941, walnut console, upper front rectangular dial) and 718APC (radiogram with inner right front slide rule dial, inner left phono, doors) with the same 6 buttons but 4 knobs in a row. This is the FM chassis with 14 tubes and 5 knobs (2 and 3) which can be found at least in the consoles 718FM (console, upper front slide rule dial - Slusser names 4 knobs ...), 718FMC, 718FMX and 718XFMA. The sticker of the 718 FMX shows two 6AC7 with a bigger heater current etc. instead of the 6SK7. See information about the whole family 718.
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 13 = 1942 and before

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