Avionics FAQs

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Avionics FAQ

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Why do the Ryan TCAD traffic systems require installation of a transponder coupler?

The Ryan 9900B and 9900BX TCAD systems require a transponder coupler to installed in line with each aircraft transponder on-board. The copler is required to provide a blanking pulse to prevent display of the transponder on-board the aircraft. Other traffic systems such as the L3 Skywatch and Bendix/King KTA-870 that process transponder interrogations and replies do not require transponder couplers.