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RF400 Series Spread Spectrum Data Radio/Modems
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FIGURE 5. Example COAX RPSMA-L Cable for Yagi or Omni Colinear
FIGURE 6. Antenna Surge Protector
4.5 Antenna Cables and Surge Protection
4.5.1 Antenna Cables
The 14201, 14203, 14205, 14221, and 16755 antennas require an antenna
cable; either (1) the COAX RPSMA or (2) the COAX NTN with surge
protector. Indoor omni-directional antennas are either supplied with an
appropriate cable or connect directly to the RF400 series radio.
4.5.2 Electro-static Issues
Many RF400 series installations are out of doors and therefore susceptible to
lightning damage, especially via the antenna system. Also, depending on
climate and location, electro-statically charged wind can damage sensitive
electronics if sufficient electric charge is allowed to accumulate on the antenna
and cable. To protect against this CSI offers the Item # 14462 Antenna Surge
Protection Kit.
The COAX NTN-L cable is a low-loss RG8 coaxial cable that requires the
14462 surge protector in order to connect to an RF400 series radio. The RG8 /
Antenna Surge Protector are recommended in preference to the COAX
RPSMA in the following applications:
• When the antenna cable length exceeds 10 feet