New field opened up for radio engineer by acceptance of wireless communication as essential part of police force equipment, as he is confronted in police work with conditions and requirements not heretofore encountered; low efficiency aerials on moving motor vehicle; in many cases unskilled operators, limited power supplies, etc, make task of providing reliable service more difficult.
Police wireless
Marconi Rev
Marconi Review ; n 64
1937
11 pages
Aufsatz (Zeitschrift)
Englisch
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