• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1943 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 142805

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

• Number of Tubes
• 3

• Valves / Tubes
• VT-116 VT-116 VT-167

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Dry Batteries / 135 / 6 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Wooden case

• from Radiomuseum.org
• Model: SCR-211-AK Frequency Meter Set - Philco, Philadelphia Stg. Batt

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

• Dimensions (WHD)
• 10.5 x 15 x 9.75 inch / 267 x 381 x 248 mm

• Notes
• Precision heterodyne frequency meter designed to measure or radiate radio-frequency impulses between 125 kHz and 20 MHz. Portable, self-contained, used mainly to calibrate field radio receivers and transmitters by direct comparison with the crystal-calibrated variable frequency oscillator of the instrument. Frequency readings provided by a calibration book. Contained 1 MHz crystal oscillator and variable frequency oscillator operating in two switched ranges: 125 to 250 kHz and 2 to 4 MHz. The 2nd, 4th and 8th harmonics of the low-frequency range were used to cover 250 kHz to 2 MHz, while the 2nd, 4th and 5th harmonics of the high-frequency range were used to cover 4 MHz to 20 MHz. The first of a new series of frequency meters containing modulator unit and WARM-UP position on the operation switch. Required six BA-2 batteries (22.5V each), four BA-23 batteries (1.5V each) and HS-30 headset.

• Net weight (2.2 lb = 1 kg)
• 36 lb (36 lb 0 oz) / 16.344 kg

• Source of data
• -- Original-techn. papers.

• Literature/Schematics (1)
• TM 11-300 (20 July 1944)

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

• Other Models

• Here you find 4041 models, 2217 with images and 3690 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA