• Country
• Great Britain (UK)

• Manufacturer / Brand
• Sinclair Radionics Ltd.; St. Ives (Cambridge)

• Year
• 1979

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 265008

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

• Number of Transistors
• 9

• Semiconductors
• BF199 BF199 BF245 ZTX214 ZTX239 ZTX313 ZTX214 BFR41 SN74LS00 SN74LS74 SP8660 ICM7216 BA244 1N4148 BZX41 NSA1588A

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Batteries / addl. power jack / PP3: 1 x 9 / 9 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Digital Frequency Meter PFM200 - Sinclair Radionics Ltd.; St.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 6.2 x 3 x 1.25 inch / 157 x 76 x 32 mm

• Notes

• These devices were installed in a calculator type housing and were cheap for the time. The unit is powered by a battery (PP3 or equivalent type) or via an AC power adaptor.

  Measuring ranges:
  - A: 20 Hz - 10 MHz
  - B: 5 - 200 MHz.

  See Thurlby Thandar PFM200

  Note: manual mentions the ICL7216 as display driver, but that is a typo. This equipment has an 8 digit LED display (NSA1588A) and uses an ICM7216 LED driver.

• Net weight (2.2 lb = 1 kg)
• 0 lb 6 oz (0.375 lb) / 0.170 kg

• Price in first year of sale
• 53.00 GBP

• Other Models

• Here you find 41 models, 38 with images and 19 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sinclair Radionics Ltd.; St. Ives (Cambridge)