25A391

Radio frequency tuning unit

Properties of 25A391

Overall Length:
7.375 inches
Overall Height:
2.250 inches
Overall Width:
4.750 inches
Basic Shape Style:
Rectangular or square
Frequency Per Channel:
200.0 kilohertz 1st operating channel
Frequency Per Channel:
1.5 megahertz 2nd operating channel
Frequency Per Channel:
18.0 megahertz 2nd operating channel
Frequency Per Channel:
500.0 kilohertz 1st operating channel
Fsc Application Data:
Radio receiver, radio communication equipment, airborne
NSN:
5895-00-041-3495
Description:
Tuning Unit,radio Frequency
Cage Code:

Definition Radio Frequency Tuning Unit

An electronic device consisting of the necessary elements to establish the frequency or frequency range of two or more tuned circuits to predetermined value or range. It may have facilities for calibration adjustments. There are no integral facilities for continuous variation of the frequency over the entire range of the item. It is generally used with an external variable capacitor or inductor which will effect the continuous variation of the frequency. This item is used to facilitate rapid band or channel changes in radio receivers, transmitters, amplifiers or similar devices. It does not include electron tubes. See also coil assembly, radio frequency and tuner, radio frequency.

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Last modified 11/05/2024