Campbell Scientific RF500M Radio Modem - Manual (Page 11)

Section 2. Radiotelemetry Network Components
FIGURE 2-3. RF500M Radio Jumper Expanded View
2.2.3 Digital Radio Description
The RF500M is compatible with digital RS-232 radios such as the DataRadio
Integra radio.
The digital radios are connected to the RF500M modem with a serial cable
between RS-232 ports. Use Device Configuration Utility to configure the
RS-232 connection options in the RF500M to work with the digital radio.
2.3 Antennas and Cables
Antennas radiate and receive the radio signals. Each radio in an RF telemetry
system must have an antenna. Coaxial cable is used to connect the antenna to
the radio.
2.3.1 Antenna Mounts
Antennas must be mounted above any surrounding buildings or obstacles.
Antennas must be properly oriented in relationship to the other antennas for RF
communications to work. Antennas have various mounting options. Specific
questions regarding antennas can be directed to Campbell Scientific, Inc.
2.3.2 Antenna Orientation
Antennas must be oriented correctly to allow communication between RF sites.
First determine if your antenna is omnidirectional or unidirectional.
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