• Country
• United States of America (USA)

• Manufacturer / Brand
• Polarad Electronics Corp.- Long Island, NY

• Year
• 1955 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 132529

• Number of Tubes
• 2

• Valves / Tubes
• 6X4

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Plug-In RF Tuning Unit STU-3A - Polarad Electronics Corp.-

• Notes
• Plug-in tuning unit for TSA series spectrum analyzers. Covers from 4370 to 22000 MHz in two overlapping bands: 4370 to 11000 MHz and 8900 to 22000 MHz, using either the fundamental or the second armonic of the oscillator. N-coaxial connector or waveguide input.

• Price in first year of sale
• 2,190.00 $

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• Other Models

• Here you find 63 models, 11 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Polarad Electronics Corp.- Long Island, NY