The fixed station controller forms the second most important element of a radio communications system, and is the means of managing the information flow in/out over the radio system.
Starting with the launch of the Pye radio-telephone system concept in 1946, three core types of operator control arrangements were made available.
Local control where the operator sat in front of the fixed station and directly operated the front panel controls.
Extension control where the transmitter/receiver was located within 200 feet of the operator.
Remote control where the fixed station was located a considerable distance from the operator, and Post Office telephone lines or a separate radio link were used to interconnect the two sites.
The fixed station transmitter-receiver forms the core element of a radio communications system which provides messages between a central station and users out in the field.
• Fixed stations can be compact, low-cost units based on PMR mobile technology
• They can be desk-top mounted and they can be locally operated or remotely controlled over telephone lines or radio links
• They can be substantial rack-cabinet mounted equipment
• They can be low power for short range or high power for long range/area coverage
• They can be rated for intermittent operation or built for a continuous duty cycle