E1D01 - Amateur Extra Class

E1D01 : What is the definition of telemetry?
A One-way transmission of measurements at a distance from the measuring instrument
B Two-way transmissions in excess of 1000 feet
C Two-way transmissions of data
D One-way transmission that initiates, modifies, or terminates the functions of a device at a distance
Correct Answer: One-way transmission of measurements at a distance from the measuring instrument