• Country
• United States of America (USA)

• Manufacturer / Brand
• Meissner Mfg. Div., Maguire Industries, Inc. (IL)

• Year
• 1948

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 338950

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

• Number of Tubes
• 5

• Valves / Tubes
• 6V6GT 807 6U5 5Y3GT 5Y3GT VR105 VR75

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Signal Shifter EX - Meissner Mfg. Div., Maguire

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 13.25 x 8.75 x 13.8125 inch / 337 x 222 x 351 mm

• Notes

• The Meissner Signal Shifter EX is a VFO (variable frequency oscillator) with an RF amplifier (kit version) that was typically used as an exciter for a larger transmitter.  RF output is "in excess of 6 watts". Output is link coupled.  The coils for  six ranges (Five normally supplied with the set covering amateur bands of 10-11, 15, 20, 40, and 80 meters) are turret mounted with a six-position selector. The sixth position was for an optional band for an accessory coil strip for 160 meters, 12  meters (for doubling to 6 meters), or a narrower (AM phone) portion of the 80 or 20 meter bands  An eye tube serves as a tuning and keying indicator. Crystal control is an option. The tuning control is graduated from 0 to 500 and is designed to overlap the bands by 2% on either side.

  The tube count in the EX advertisements is 7 which includes two voltage regulators, VR105 and VR75.

  The kit version cost $66.50 when introduced.  A fully-built version was also available as part number 9-1090EX at a price of $99.50.  The EX used two VR tubes for voltage control on both the screen and the plate of the 6V6GT oscillator as distinct from the earlier model 9-1090.  The EX version also added two iron-core chokes in the cathode return circuits of the 6V6GT and the 807. The 1949 Allied catalog noted the shipping weight at 38 pounds.

• Price in first year of sale
• 66.50 US$

• Mentioned in
• - - Manufacturers Literature (1948 Meissner catalog)

• Literature/Schematics (1)
• - - Manufacturers Literature (manual)

• Literature/Schematics (2)
• The Spectrum Monitor, July 2022

• Author
• Model page created by Rich Post. See "Data change" for further contributors.

• Other Models

• Here you find 72 models, 55 with images and 36 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Meissner Mfg. Div., Maguire Industries, Inc. (IL)