Title :
Automatic communications control system
Author :
Grindahl, Mervin L.
Author_Institution :
E. F. Johnson Company
Abstract :
In FM Land Mobile communication systems, the frequency spectrum below 300 Hz is essentially unused and can be exploited for data transmission. This paper explores a signaling method using subaudible data transmission and its application in a trunked radio dispatch system.
Keywords :
Automatic control; Band pass filters; Communication system control; Control systems; Logic; Low pass filters; Pulse modulation; Pulse shaping methods; Radio frequency; Repeaters;
Conference_Titel :
Vehicular Technology Conference, 1980. 30th IEEE
DOI :
10.1109/VTC.1980.1622861
