• Country
• United States of America (USA)

• Manufacturer / Brand
• RF Communications, Inc.; Rochester, N.Y.

• Year
• 1980 ??

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

• Radiomuseum.org ID
• 297119

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

• Number of Transistors
• 3

• Semiconductors
• MPS-A13 MPS-U01 2N4124 LM324 CD4001 CD4023 CD4024 CD4024 CD4027 CD4051 CD4069 CD4521 MM80C97 1N4004

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit. / 13,2 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Auto Alarm RF-253 - RF Communications, Inc.;

• Notes

• The RF-253 automatically generates the radiotelephone alarm signal for maritime operation. It is organized as a plug-in module for housing in the RF-236.

  1A1A7/1A1A8 refer to RF230 (X) manual.

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 12 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RF Communications, Inc.; Rochester, N.Y.