OFF THE AIR MONITORING

1. In radio net operations, the listening, by the net- control station , to the transmissions of stations in the net, particularly to check the quality of their transmissions. Note: Off-the-air monitoring is usually performed during periods when the net-control station is not transmitting. 2. The listening, by a radio station, to its own transmissions by receiving the signal that has been transmitted by the transmitting antenna , to discover the quality of the signal being transmitted to other stations or being broadcast. Note: In off-the-air monitoring, the received signal must have traveled through the air a reasonable distance from the transmitting antenna and not be a signal that is tapped on its way to the transmitting antenna internal to the station or in the antenna transmission line , i.e., the feeder. The monitoring distance should be such that direct inductive or capacitive coupling between the transmitting antenna and monitor antenna does not occur. [ From Weik '89 ]