Marker beacon panel

The 152's marker beacon panel on its beige faceplate: the three lamps (blue outer, amber middle, white inner) under MARKER BEACON, each lit while the simulator hears its marker; TEST lights all three. The VOL / DIM knob, the LO SENS / HI SENS and SPKR / PHONE toggles work as the real ones and say nothing to the simulator.

Modeled on: Cessna 152 marker beacon receiver panel (three lamps, VOL / DIM knob, TEST, sensitivity and speaker toggles)
Category: Radios and panels
Size: 2 × 1 cells
Version: 1.0 · 2026-10-19
Plan: Pro
Simulators: MSFS 2020 · MSFS 2024 · X-Plane 11 · X-Plane 12

Features

Three lamps: blue for the outer marker, amber for the middle, white for the inner, lit while the simulator's receiver hears that marker
TEST lights all three lamps while held
VOL / DIM knob: the outer ring the volume with OFF at its stop (OFF: the lamps dark), the silver center the lamps brightness (DIM)
LO SENS / HI SENS and SPKR / PHONE toggles clack between their positions; no simulator counterpart, as the volume and DIM
Dark without avionics power; at night the faceplate and its controls take the red flood light (and the glareshield's warm light when its dimmer is up); the lamps keep their own colors

On the iPad

Press and hold TEST to light the three lamps
Drag round the knob: its outer ring the volume (down to OFF), its center the lamps brightness
Tap a toggle (or swipe it) to flip it between its positions
Long press to change or move the module

Simulator data

What the Hub reads from the simulator for this instrument, and what the instrument sends back. Names are the simulators' own: MSFS SimVars and events, X-Plane datarefs and commands.

Reads

Value	MSFS	X-Plane
Marker beacon: 0 none, 1 outer, 2 middle, 3 inner (enum)	`MARKER BEACON STATE (number)`	`sim/cockpit2/radios/indicators/outer_marker_litsim/cockpit2/radios/indicators/middle_marker_litsim/cockpit2/radios/indicators/inner_marker_lit`

Add-on aircraft with their own systems may use other variables; the Hub reads the standard ones.