Introduction to Radio Instruments
UJPT, E2-C2, ADV, & IUT RIFP-01
3. Marker beacon lights are synchronized with audio identification
a. Outer marker passage
(1) Blue light
(2) Tone is two dashes per second at 400 Hz
b. Middle marker passage
(1) Amber light
(2) Tone is dots and dashes at 1,300 Hz
c. Inner marker passage
(1) White light
(2) Tone is six dots per second at 3,000 Hz
(8-97) Change 1
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