• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1951–1960 ?

• Category
• Power supply/conditioner or battery or charger 

• Radiomuseum.org ID
• 87474

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

• Number of Tubes
• 0

• Valves / Tubes
• 5TF4 10-4A 10-4A

• Number of Transistors

• Semiconductors
• Vibrator or. PP-2088-A/U

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 or 12 or 24 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: Dynamotor Power Supply DY-88/GRC-9 - MILITARY U.S. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 230 x 185 x 330 mm / 9.1 x 7.3 x 13 inch

• Notes

• Dynamotor- and vibrator PSU for radio set AN/GRC-9. Dynamotor output 580 volts at 100 mA transmitter plate. Vibrator PSU output 120 volts at 45 mA receiver plate. Via ballast-tubes: 6,5 volts at 2 A transmitter filament, 1,5 volts at 500 mA for receiver filament, 6,9 volts at 575 mA for keying-relay. Mainly used in mobile installations.

  This power unit exists with different suffixes for local manufacture or destination (Germany: -GY, France: -FR).

• Net weight (2.2 lb = 1 kg)
• 22 kg / 48 lb 7.3 oz (48.458 lb)

• Literature/Schematics (1)
• -- Original-techn. papers. (TDv. 5820/3-01)

• Author
• Model page created by a member from D. See "Data change" for further contributors.

• Other Models

• Here you find 398 models, 350 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)