Broadcast Engineer's Reference Book

I G AizlewoodManaging Director, Continental Microwave Ltd

5.2 Microwave Links for OB and ENG

 

 

 

5.2.1 System Concepts

5.2.1.1 Transmitters

Siting of the transmitter is largely dictated by location of the event to be televised and is therefore substantially outside the operator’s choice. Consequently, the transmit terminal generally makes greater demands of the designer. Let us examine the main options available to the development engineer.

Two broad approaches are common: direct modulation and heterodyne.

 

5.2.1.1.1 Direct modulation

The generation of a UHF signal and its modulation and multiplication to the required output frequency is a technique generally termed direct modulation. Direct modulation has advantages of simplicity, small ...