Description of radio-telephone system in railroad trains allowing constant communication between train crews and operators, thus greatly improving efficiency of traffic and reducing operating costs; specification of equipment required, operation, maintenance and results of test runs, stating advantages obtained.
Railroad radio-telephone equipment
Elec. Jl
Electric Journal ; 26 , n 2
1929
6 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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