• Country
• Great Britain (UK)

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

• Year
• 1948 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 253689

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

• Number of Tubes
• 1

• Valves / Tubes
• X24

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Heterodyne Frequency Meter Type TF897 EBP897 - Marconi Instruments, Marconi-

• Shape
• Tablemodel, with any shape - general.

• Notes

• The Heterodyne Frequency Meter Type TF 897 uses teh tube (triode-hexode) X24 and a 500 kc/s crystal type TA18113. The TF897 is for both, for setting up the frequency transmitters and for checking the calibration of receivers. The fundamental bands are 100-200 kc/s and 1000-2000 kc/s, but a continuous cover of 100 kc/s to about 25 Mc/s may be secured by the use of harmonics.

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Ernst Erb. 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)