Model Number: LinAire LM-4

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    Marker Beacon Receiver Test Panel

    Aero Express is an Authorized Distributor for the LinAire LM-4 Test Panel.

    To view click here: Standard Warranty Policy  LM-4 Cable Listing

    Aero Express will buy, sell and trade the LM-4 depending on your needs.  The LinAire model LM-4  test panel is designed to provide complete bench test facilities for all maker beacon receivers.

    Click the link above to be directed to a complete listing of Linaire Cables.

    After you locate your required part number in the catalog, use the Quick Quote Form to request a quote.

    If you need further assistance, please contact us.


    • A 4” 0-30 Volt meter and a 4” 0-10 Amp meter are provided to monitor voltage and current
    • Operates 14/28V DC and 115V AC units
    • Voltage input fusing and control facilities are provided
    • Audio control, internal speaker, and an audio jack are provided for audio

    1-Year Factory LinAire Warranty on all new products.


    Express Calibration is an Authorized ISO-17025 Calibration and Repair shop for the Linaire LM-4.  Visit for full capabilities.

    All units will be sold with a current calibration certificate. If factory new, a manufacturer’s Certificate of Conformance (C of C) will be provided.

    Since its inception, Express Calibration Services has supported Aero Express’ endeavors in providing test equipment support services.

    They perform calibrations for General Aviation, Corporate Aviation, OEMs, FAA Repair Stations, Military, as well as Regional and Air Transport Airlines. Express Calibration Services offers their services when you have a requirement for calibration or repair of your test equipment.