Campbell Scientific RF401A-Series Spread Spectrum Radios - Manual (Page 20)

RF401A-Series Spread Spectrum Radio
Approved Antennas
Campbell Scientific
Part Number
Description
14201 900 MHz 9 dBd Yagi Antenna with Type N Female
and Mounting Hardware
14204 900 MHz 0 dBd Omnidirectional 1/2 Wave Whip
Antenna with Right Angle and RPSMA Male
14205 900 MHz 6 dBd Yagi Antenna with Type N Female
and Mounting Hardware
14221 900 MHz 3 dBd Omnidirectional Antenna with
Type N Female and Mounting Hardware
14310 900 MHz 0 dBd Omnidirectional 1/4 Wave Whip
Antenna, Straight 3 inches Tall with RPSMA Male
15730 900 MHz 0 dBd Omnidirectional 1/4 Wave Whip
Antenna with Right Angle and RPSMA Male
15731 900 MHz 0 dBd Omnidirectional 1/4 Wave Whip
Antenna, Straight 2 inches Tall with RPSMA Male
15970 900 MHz 1 dBd Dipole Antenna with Adhesive
Mount and RPSMA Female 10ft Cable
7.7.2 Electrostatic Issues and Surge Protection
Many radio installations are out of doors and therefore susceptible to lightning
damage, especially via the antenna system. Also, depending on climate and
location, electrostatically-charged wind can damage sensitive electronics, if
sufficient electric charge is allowed to accumulate on the antenna and cable.
To protect against electrostatic damage, the antenna connector of the radio is
connected to the radio case which can be tied to a good earth ground for
discharge of electrostatic build up.
Also to protect against electrostatic damage, Campbell Scientific offers pn
14462, Antenna Surge Protection Kit. The surge protection kit includes a
Polyphaser surge protector, a coax jumper for connecting the RF401A-series
radio to the Polyphaser, ground wire lead, and mounting hardware. The
Polyphaser has Type N jack connectors on both ends; one for connection to a
COAXNTN-L cable and the other for connection to the 18-inch length of
COAXRPSMA cable included in the kit.
7.7.3 Antenna Cables
Some antennas require an additional antenna cable to connect to the radio
directly or to an interconnected surge protector.
COAXRPSMA-L is a LMR195 coaxial cable terminated with a Type N plug
on one end and a RPSMA plug on the other. The COAXRPSMA-L can be
used to connect antennas with a Type N jack connector directly to the
RF401A-series radios. Such antennas include the 14201, 14204, 14205, and
14221.
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