Model Number: IFR NAV-401L

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    NAV/COMM Bench and Ramp Test Set

    To view click here: Standard Warranty Policy  NAV-401L Data Sheet  NAV-401L Operation Manual

    Aero Express will buy, sell and  trade the NAV-401L depending on your needs.  The NAV-401L is designed to meet the electronic functional test requirements of Category I and Category II ILS Systems, Communication (COMM), Navigation (NAV), and Marker MKR) Systems.


    • Includes a signal generator with a variable attenuator which can be connected to the equipment under test by a radiated signal from a self-contained antenna or by a coax line
    • Can be operated under either crystal frequency control or in a variable frequency mode in each band
    • The NAV-401L is housed in a compact, portable case.

    90-Day Warranty


    Express Calibration is an Authorized ISO-17025 Calibration and Repair shop for the IFR/Aeroflex NAV-401L.  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