Radio modem

Radio modems transfer data wirelessly across a range of up to tens of kilometres.wikipedia
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Very high frequency

VHFVHF radioVHF band
In most cases users use licensed frequencies either in the UHF or VHF bands.
Common uses for radio waves in the VHF band are digital audio broadcasting (DAB) and FM radio broadcasting, television broadcasting, two way land mobile radio systems (emergency, business, private use and military), long range data communication up to several tens of kilometers with radio modems, amateur radio, and marine communications.

SATEL

SATEL is Finnish radio modem manufacturer specialising in design and manufacture of radio modems for land survey, SCADA, traffic control and telemetry applications.

Racom

RACOM, a company headquartered in Nové Město na Moravě, Czech Republic, is specializing in design and production of radio modems, GPRS/EDGE/UMTS routers and microwave links.

Ultra high frequency

UHFUHF bandultra-high frequency
In most cases users use licensed frequencies either in the UHF or VHF bands.

Surveying

surveyorsurveyland surveyor
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

Differential GPS

DGPSDifferential Global Positioning Systemposition information
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

Fleet management

fleet management systemFleet managersDriver Behavior Devices
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

SCADA

supervisory control and data acquisitionSupervisory Control and Data Acquisition (SCADA)Supervisory control (SCADA)
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

Automatic meter reading

automated meter readingAMRautomated metering
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

Telemetry

radio telemetryradio-collaredtelemetric
Typical users for radio modems are: Land survey differential GPS, fleet management applications, SCADA applications (utility distribution networks), automated meter reading (AMR), telemetry applications and many more.

Antenna (radio)

antennaantennasradio antenna
Factors influencing radio performance are: antenna height and type, the sensitivity of the radio, the output power of the radio and the complete system design.

Sensitivity (electronics)

sensitivitysensitivereceiver sensitivity
Factors influencing radio performance are: antenna height and type, the sensitivity of the radio, the output power of the radio and the complete system design.

Morse system

The system has been primarily designed for narrow band radio modems.

Intelligent transportation system

intelligent transportation systemsIntelligent Transport SystemsITS
Radio modem communication on UHF and VHF frequencies are widely used for short and long range communication within ITS.

Wi-Fi

WiFiwireless internetwireless
Similarly, battery-powered routers may include a cellular Internet radio modem and Wi-Fi access point.

Edholm's law

Slower communications channels like cellphones and radio modems were predicted to eclipse the capacity of early Ethernet, due to developments in the standards known as UMTS and MIMO, which boosted bandwidth by maximizing antenna usage.

Real-time kinematic

Real Time KinematicContinuously Operating Reference StationRTK
The most popular way to achieve real-time, low-cost signal transmission is to use a radio modem, typically in the UHF Band.

Radio

Hybrid-Airplane Technology H-Aero

H-Aero can be steered via radio modem, cellular network (GPRS, 3G, 4G, LTE) or within a closed room by Wireless LAN.

Modem

modemsdial-up modem56k modem
Modern telecommunications and data networks also make extensive use of radio modems where long distance data links are required.

Turbo Dispatch

radio modem (sometimes called a Mobidem) using one of the PC's RS-232 communication ports.