| Popis: |
The reason of the ATC antenna failure is mostly the mismatch of the ATC transponder output impedance with the ATC Antenna impedance. The mismatch causes the increasement of the Voltage Standing Wave Ratio (VSWR) and the severe low efficiency of the emission (receive), then the ATC/TCAS system cannot working normally. The on-wing test instrument of the ATC VSWR can accurately measure the ATC antenna performance without the removal of the ATC antenna. The recession performance of the ATC antenna can be found by the regular check with this instrument. So the ATC antenna performance can be kept in good condition by this preventive maintenance. |
