Phil l’Anson BSc
7.4A Broadcast Engineering RF Measurements
RF measurements are needed to ensure that transmissions are within prescribed limits. The impact of out-of-specification transmissions can be interference to other users of the RF spectrum as well as degrading the broadcast service.
Round the clock broadcasting gives little opportunity for off-line maintenance of transmitter equipment. Even when systems that have fault-tolerant designs it is very unlikely that full power can be maintained with part of the system isolated to carry out maintenance tests. The capital cost of a high-power transmitter normally makes it impossible to justify the cost of a full-power reserve arrangement.
A typical high-power television transmitter system ...
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