What is the function of a commercial aircraft’s SELCAL installation? SELCAL is a type of aircraft communications __________.

Question

What is the function of a commercial aircraft’s SELCAL installation?  SELCAL is a type of aircraft communications __________.

Accepted Answer

System where a ground- based transmitter can call a selected aircraft or group of aircraft without the flight crew monitoring the ground-station frequency .

Answer

Device that allows an aircraft’s receiver to be continuously calibrated for signal selectivity.

Answer

Transmission that uses sequential logic algorithm encryption to prevent public “eavesdropping” of crucial aircraft flight data.

Answer

System where an airborne transmitter can selectively calculate the line-of-sight distance to several ground-station receivers.

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