• Country
• Great Britain (UK)

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

• Year
• 1940

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 120897

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

• Number of Tubes
• 4

• Valves / Tubes
• 41FP or ML4 41FP or ML4 41FP or ML4 MU12/14

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: RF Signal Generator TF144G - Marconi Instruments, Marconi-

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 742 x 311 x 254 mm / 29.2 x 12.2 x 10 inch

• Notes

• Radio Frequency Signal Generator covering 85 kHz to 25 MHz in 8 bands, modulation external or 400 Hz internal, output 1 µV - 1V.

  The early TF144G instruments used three ML4 tubes rather than 41FP.

  The versions are:

  TF144G/1 - Frequency range 20kHz to 8MHz
  TF144G/2 - Frequency range 40kHz to 15MHz
  TF144G/3 - Overlapping coverage on the 6 upper frequency ranges
  TF144G/4 - 1000Hz modulation instead of 400Hz
  TF144G/5 - Frequency range 20kHz to 8MHz and attenuator modified for 150 ohm output
  TF144G/6 - 1000Hz modulation instead of 400Hz and modified for rack mounting

• Net weight (2.2 lb = 1 kg)
• 30.8 kg / 67 lb 13.5 oz (67.841 lb)

• Literature/Schematics (1)
• - - Manufacturers Literature

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 96 models, 83 with images and 41 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marconi Instruments, Marconi-Ekco (MI, MEI)