IFR4000 Nav

Comm Flight Line Test Set A portable unit designed for the testing of navigation instruments and communication systems.

The VIAVI IFR4000 Flight Line Test Set is designed for testing ILS, VOR, Marker Beacon, HF/VHF/UHF Communications (NAV/COMM) Systems, and ELT Short Range Emergency Beacons and 406 MHz COSPAS/ SARSAT Long Range Emergency Beacons. The menu driven functionality and guided test capability make this instrument extremely easy to use.


  1. Morse code provides 1-4 characters transmitted in the VOR and ILS localizer mode
  2. Generation of ARINC 596 selective calling tones
  3. Simulation of Localizer and Glideslope (CAT I, II, and III) Signals with variable DDM settings
  4. Accurate measurement of VHF/UHF antenna and or feeder SWR (Standing Wave Ratio)
  5. Simulation of marker beacon, selectable outer, middle, and inner marker tones


  1. Accurate measurement of 121.5/243 MHz emergency beacon transmitter frequency, output power, modulation (AM). Headphone audio output to monitor swept tone
  2. Accurate measurement of 406 MHz COSPAS/ SARSAT emergency beacon transmitter frequency and output power
  3. Decode and display all location and user protocols