CESSNA AIRCRAFT COMPANY FOR TRAINING USE ONLY
MODEL 152 9-45
SUPPLEMENT
CESSNA 400 MARKER BEACON (Type R-402A)
SECTION 1 – GENERAL
The system consists of a 75 MHz marker beacon receiver, three indicator lights, a speaker/phone
selector switch, a light dimming control, an ON/OFF/VOLUME control, and a 75 MHz marker beacon
antenna. In addition, a HI-LO-TEST switch is provided on all airplanes except the 152 series airplanes for
sensitivity selection and test selection. On 152 series airplanes, a HI-LO sensitivity selector switch is
provided with a separate press-to-test button.
This system provides visual and aural indications of 75 MHz ILS marker beacon signals as the marker is
passed. The following table lists the three most currently used marker facilities and their characteristics.
Continuous 6 dots/sec (300 Hz)
Alternate dots and dashes (1300 Hz)
* When the identify tone is keyed, the respective indicating light will blink accordingly.
Operating controls and indicator lights are shown and described in Figure 1.
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