Harley-Davidson VL Police Radio Motorcycle and Early Police Communications
These early 1930s Harley-Davidson VL police motorcycle photos show a transitional moment in police motorcycle development. Officers were still working in an era of hand signals, call boxes, and telephone dispatch, but radio was beginning to move police communication onto the road.
The motorcycles are still recognizable VLs, but the police equipment changes the job they were built to do.
A One-Way Radio on an Early 1930s VL
Pictured above is an early 1930s, roughly 1931 to 1933, Harley-Davidson VL police model. Among early 1930s V-Series Harleys, the feature that most clearly separates this machine from a civilian motorcycle is its one-way radio system.
The radio receiver is mounted on the rear luggage rack and connected to a speaker mounted under the gas tank. A megaphone attached to the speaker helped amplify the sound and redirect it upward toward the top of the tank, giving the officer a better chance of hearing dispatcher messages while riding or stopped on patrol.
This was not yet a two-way motorcycle radio system. It was a receive-only setup. The officer could hear dispatcher audio, but sending a voice reply from a solo motorcycle was still limited by the size, power needs, and practicality of the available equipment.
Police Communication Before Motorcycle Radios
Before mobile radio became practical, police departments depended on fixed communication points. Telephones, telegraph systems, and street call boxes let officers report from known locations, but the officer still had to reach the box or telephone before a message could move.
That older system worked, but it tied communication to a fixed point on the beat. Radio changed the idea. Instead of waiting for an officer to check in from a call box, a dispatcher could broadcast information directly to a moving patrol vehicle, then eventually to motorcycles fitted with receive-only equipment like the VL shown here.
From Detroit’s One-Way Radio to Two-Way Patrol Cars
The late 1920s and early 1930s were the key years for police radio. Detroit demonstrated practical one-way radio dispatch for patrol cars in 1928, using receivers in vehicles to pick up headquarters broadcasts. New York followed with official police radio broadcasts in the early 1930s, and Bayonne, New Jersey, introduced an operational two-way mobile radio system in 1933.
Those developments help explain the VL radio motorcycle. It belongs to the same period of experimentation and adoption, but a solo motorcycle was a harder place to install radio equipment than a patrol car. A receiver on the rear rack was feasible; a complete two-way transmitter-and-receiver package was a much bigger problem.
Sirens, Spotlights, and What Was Not Standard Equipment
The second VL police motorcycle carries a different set of visible police extras. On the front fender, a large siren is mounted off to the left side, and an additional spotlight is mounted to the handlebars.
It is easy to assume that lights and sirens were standard on every police motorcycle, but that was not always the case. Even as police Harleys were getting more specialized, individual departments and officers still had to deal with budgets, local practice, and maintenance realities.
Early motorcycle officers were often responsible for maintaining their machines, and in some cases they had to buy extra equipment such as lights and sirens out of their own pockets. That is why many early motorcycle police relied on hand signals to tell motorists to pull over instead of depending on a full set of powered warning equipment.
Why Two-Way Radios Came Later to Motorcycles
The receive-only VL setup also explains why two-way motorcycle radio took longer to become common. Early mobile two-way systems used bulky vehicle-mounted equipment, vacuum tubes, power supplies, and antennas that were far easier to package in a car than on a solo motorcycle.
Because of that size problem, the first Harley police motorcycles to receive two-way radio equipment were three-wheeled Servi-Cars. A Servi-Car offered more room and carrying capacity for the equipment than a standard two-wheeled VL, making it a more practical platform for early two-way radio installations.
Seen that way, these VL police photos are more than accessory shots. They show the middle ground between the call-box era and later two-way radio patrol: motorcycles were already being pulled into modern police communication, but the hardware had not yet caught up with the needs of a compact solo machine.