• Country
• United States of America (USA)

• Manufacturer / Brand
• McElroy, T.R.; Boston MA

• Year
• 1941/1942

• Category
• Morse-Equipment & TTY, RTTY, TDD etc.

• Radiomuseum.org ID
• 161827

• Number of Tubes
• 1

• Valves / Tubes
• 117N7GT

• Main principle
• none

• Wave bands
• - without

• Power type and voltage
• AC/DC-set / 110 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic. / Ø 3 inch = 7.6 cm

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Mac Oscillatone S-700 - McElroy, T.R.; Boston MA

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 4 x 5 x 3 inch / 102 x 127 x 76 mm

• Notes
• We have no cover to this Allied Catalog Supplement with date 1942 but this Mac Oscillatone Code practice oscillator was offered there as Allied #76-008 to $ 5.95 (on page 136). Dimensions do not include switches or tube protruding from rear of case.

• Price in first year of sale
• 6.00 $

• Literature/Schematics (1)
• Allied Radio Catalog (Knight) (1942 p.136)

• Author
• Model page created by Edmund H. Ramm. See "Data change" for further contributors.

• Other Models

• Here you find 33 models, 33 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McElroy, T.R.; Boston MA