Range of radio telemetry?

Answer:

There are two kinds of telemetry--one-way, where the remote device sends instrumentation signals to the receiving station; and two-way, where the receiving station can send control signals back to the remote device. The range is literally unlimited--deep-space probes have two-way telemetry gear on them, and it can take months or even years to transmit a message from the vehicle to the earth.

First answer by Jmowreader. Last edit by Jmowreader. Contributor trust: 1119 [recommend contributor recommended]. Question popularity: 3 [recommend question].