Complete test set for testing the communication and navigation instruments in aircraft both with a direct connection to the antenna input of the transceiver and off- air using a test antenna Comprehensive measuring equipment including VSWR, spectrum monitor and transient recorder opens all kinds of measurement applications. Off-air tests for fast and comfortable testing of the navigation instruments without connecting and exchanging hard-to-get-at antenna inputs The only radio tester with an integrated VOR/ILS generator which has already been established on the market and well- tested by national aviation control authorities and armed forces.