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| TF-643A portable wavemeter. The handle on the front panel makes it portable. Each tuning chart woild have been customized for each of the coverage bands |
ALso known as WY-0104
Frequency range:The four frequency ranges are as follows:
20-37 MHz
37-70 MHZ
70-130 MHz
130-300 MHz.
The wavemeter comes with four plug-in coils, one for each range.Alternate model designator: WY-0104 which cross references to TF-643A
Power: Needs 'A' and 'B' battery
Variant : comes as an 'A' model
Comment: The nameplate says: "UHF substandard" WY-0104 wavemeter"
| MODEL 643 | UHF Wavemeter #4 | WY-0104 | MK 1 |
| MODEL 643A | UHF Wavemeter #4 | WY-0267 | MkII |
The UHF portion of the radio spectrum spans 300 to 3000 MHz by today's definition so the word "substandard" could be saying that the wavemeter measures frequencies below 300 MHz.
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| TF-643A portable wavemeter. The handle on the front panel makes it portable. Each tuning chart woild have been customized for each of the coverage bands |
Contributors and Credits:1)https://www.radiomuseum.org/r/marconiins_wavemeter_tf_643_a.html
2) https://www.commsmuseum.co.uk/publications/marconi.pdf
Dec 3/23