TEST SET OPERATION. (CONT) - TM-11-6625-2975-120024

TM 11-6625-2975-12

1-13. TEST SET OPERATION. (CONT)

The test set provides 400 Hz (outer marker), 1300 Hz (middle marker), and 3000 Hz (inner marker)

audio modulation tones. Audio tones are selectable as required for testing, troubleshooting, and

alining a marker beacon receiver. Any tone may be removed if required.

The amplitude (%) modulation is variable from 90.0 to 97.0 percent in 0.1-percent increments for

testing receiver response.

The test set is capable of producing rf frequencies from 74.6 to 75.4 MHz to provide simulation of

interference-type signals.

1-14