Marker Beacon Marker Selection

TM 11-6625-2975-12

2-4. OPERATING PROCEDURES. (CONT)

NOTE

150 Hz key operates in same manner as 90 Hz key, except 150 Hz audio modulation

signal is controlled.

6. Repeat steps 4 and 5 using 150 Hz key.

NOTE

Both 90 Hz and 150-Hz signals can be removed (at the same time) to perform a flag

check or for other tests.

EL9LX047

1. Enter a marker beacon rf carrier frequency into test set (FREQUENCY/MODE SELECTION, steps

1 through 6, page 2-16).

NOTE

Outer marker beacon (400 Hz) is automatically selected when a marker beacon rf

carrier frequency is selected. 400 Hz key lights to indicate this condition.

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