The radio communications system, or network
infrastructure, is the essential backbone of
transmitter-receivers,
links, control systems and operators with which
the mobile
and/or portable
radio units communicate. Due to the
unlimited variety and
complexity of radio systems from small to large,
they are more
difficult to illustrate than
the individual
mobile or portable radio terminals. Radio
communications system
equipment is usually located at
strategic, but remote places, often high up and
on private
property.
Photographs of
the operator
control consoles or equipment
racks at
the individual radio stations do not
completely illustrate the scale
and
complexity of large radio systems. A
limited number of photos
survive
of complete
systems being run up in the factories before
delivery to the final
sites which can be positively identified and
linked to a specific
customer or application. Consequently,
only a small selection of
Pye radio systems network infrastructure
and operator control systems will be shown
below.
