Remote locomotive operation makes use of 2 pairs of frequencies. the system incorporates separate mixer and oscillator injection circuit. If signal on primary frequency falls below a usable level it is switched to alternate receiver front end. Radio transmitter (Rt) repeater acts as intermediate radio relay station. Rt repeater can be used at the ends of a tunnel. Short and medium tunnel repeater systems use one repeater. Deep cut repeater system makes use of radiating cable along the track side. Complete solidstate system.
How radio control of locomotives operates
RLY. SIGN. U. COMMUN. ; 62 , 6 ; 18-19
1969
, 3 Bilder
Article (Journal)
English
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