It can be used not only for 2-band frequency measurement using 125KHz-20MHz harmonics, but also for signal generators.
Heterodyne detection of SSB is also possible by connecting to an IF output such as R-390 (A).
The vacuum tubes are 2 6SJ7 and 6K8, and good quality parts are used.
The dry battery mounting part contains 115VAC made by OM of the United States.
The lock pin on the right side of the front panel is missing, but I don't feel any problems in using it.
An ON / OFF switch for the transmission frequency is attached to the right side of the headphone jack.
I think it's okay to always turn it on (right).
I checked the operation, but it seems that there is no big deviation, I have not adjusted it.
Working product Please keep it as it is.
The number of the calibration table and the main body are the same, it seems that it is not used much.
It is not a heterodyne frequency meter anymore, but it can be used as it is.
Headphone or SP needs about 600Ω.
Even when used as a signal generator, the heater circuit will be activated unless something is plugged into PHONES.
I can't connect.
Dimensions 26x32x24cm Weight 11.7Kg
米陸軍放出のヘテロダイン周波数計BC-221-Q 115VAC電源付
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