• Country
• Great Britain (UK)

• Manufacturer / Brand
• Marconi Instruments, Marconi-Ekco (MI, MEI)

• Year
• 1967–1976

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 274760

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 46-500 Hz: 105-130; 210-260 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: A.F. Oscillator TF 2102M - Marconi Instruments, Marconi-

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 150 x 200 x 270 inch / 3810 x 5080 x 6858 mm

• Notes

• General-purpose A.F. sinewave source covering 3 Hz - 30 kHz in four decade bands with a calibration accuracy of 2%.

  Output impedance: 600 Ω, ± 5%, floating or unbalanced
  Output level: 0 ... 10 V in approx. 1 V steps
  Distortion: less than 1% harmonic content
  Hum and noise: less than -80 dB relative to full output

  Model TF 2102M is advertised in 1967, model TF 2102M1 is known to exist from a manual dated 07/1968. It's currently unclear if M1 was the first released version of this device or a later upgrade / change. In 1976 and in 1982, the manual only specifies version M.

  There are variants with a mains switch and a power indicator, and such without.

  Made in England.

• Net weight (2.2 lb = 1 kg)
• 3.8 kg / 8 lb 5.9 oz (8.37 lb)

• Mentioned in
• -- Original prospect or advert (MI Catalog 1975-76)

• Literature/Schematics (1)
• -- Original prospect or advert (Association [...] des revues techniques belges, 1967)

• Author
• Model page created by Julian Hardstone. See "Data change" for further contributors.

• Other Models

• Here you find 94 models, 81 with images and 39 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Instruments, Marconi-Ekco (MI, MEI)