Avionics tester LM-4

aeronautical

The LM-4 monitors input voltage and current and provides external marker lamps and control switching. The LM4 Marker Beacon control panel provides the ultimate in ease in testing all popular remote mounted marker beacon receivers. The panel is a low profile (7 inches high) version of the old LM-3 panel. The LM-4 has a matched speaker added to the marker audio output. The panel is backwards compatible for use with LM - 3 Test Harnesses. Controls 4" Volt Meter Airway Indicator Middle Indicator Outer Indicator Light Voltage Jacks On-Off Selector DC Fuse 14-28 Volt Selector HI-LO Selector Audio Control4" Amp Meter Airway Test Middle Test Outer Test AGC Jack Power Indicator AC Fuse Test-Receive Selector Internal Audio Speaker Audio Jack