Newnes Radio and RF Engineering Pocket Book, 3rd Edition

15 VHF and UHF mobile communication

Mobile communication operating throughout the VHF and UHF bands

is expanding rapidly and, although the fastest growth has been in the

radio-telephone field, interest in private mobile radio (PMR) is undi-

minished. Most of the procedures described for PMR are applicable

to many other branches of radio communication, so traditional PMR

is considered here. Other systems are discussed in later chapters.

A private mobile radio system, comprising a base station and

mobiles, is one that is effectively owned by the user and, under the

conditions of the licence, may only be operated by the user’s own staff

for his or her own ...