An IFR 4000 is a flight line or ramp test set used for testing ILS, VOR, Marker Beacon, HF/VHF/UHF communication and navigation systems. It is reputable for accurate measurements of transmitter frequency, output power, modulation and receiver sensitivity. Watch the video below to learn why regular calibration is a must for your IFR 4000.
What and how should the rest of your equipment be maintained?
Read our guide to find out.