Aeroflex NAV401L Overview
The IFR NAV401L is a completely self-contained unit designed for functional testing and calibration of MKR, VOR, LOC, G/S, and COMM avionics. The NAV401L is designed to meet the functional testing and calibration requirements of CAT II ILS systems. The NAV401L covers three frequency ranges: 72 to 78MHz; 107 to 156MHz; and 327 to 337MHz.