RF400 Series Spread Spectrum Data Radio/Modems

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

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