Clear-Com Tempest2400, Справочное руководство

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To remotely locate antenna always use high quality, low loss, 50 Ohm RF cable terminated with an RP-TNC connector for
the BaseStation side connection and the appropriate antenna mating connector on the other end. LMR-195 (or equivalent)
coaxial cables can satisfactorily be used in lengths up to 10 feet. LMR-400 coaxial cables (or equivalent) can be used at
lengths up to 25 feet. Longer RF coaxial cable runs are not recommended due to signal attenuation in the cable.
When locating the antenna at distances greater than 25 feet, use the optional Tempest Remote Transceiver. The remote
transceiver allows locating antennas up to 1,500 feet away from the BaseStation without the RF signal loss that is associated
with using RF cable. Antennas can be mounted directly to the Tempest Remote Transceiver or they can be separated from
the remote transceiver using high quality, low loss, 50 Ohm RF cable as listed above. See the Tempest Remote Transceiver
section of this manual for more information on the setup and use of the remote transceiver.
Maximizing System Performance and Operational Range
Radio waves (especially those at 2.4GHz) can be significantly affected by walls, windows, or other physical barriers.
Concrete or metal walls can be of particular concern. Some tinted windows are also significant barriers to RF. Always
position antennas to minimize interference from all barriers.
A human body can be a barrier to the radio signal, especially when operating near the limit of the signal’s range. If you
experience interference, turn the BeltStation toward the BaseStation antenna.
Electronic equipment can generate radio interference. Install the BaseStation antenna away from sources of electrical
interference. Be aware of the presence of nearby electronic equipment that may cause interference as you move about
while wearing the BeltStation.
Reflected RF signals called multipath interference can cause intersymbol interference resulting in compromised audio and
should be suspected when audio is imperfect and there is no other obvious cause. Typically, intersymbol interference
requires a reflection path that is at least a few hundred feet, so is most likely to occur in a large enclosed venue with highly
reflective walls or ceiling. If intersymbol interference is suspected relocate the BaseStation antenna and/or try a directional
antenna to help eliminate received reflected signals.
Line-of-sight operation between the BaseStation antenna and the BeltStations will always produce the maximum system
performance and operational range. Minimize obstructions between the BaseStation antenna and the BeltStations when
possible.
Use an optional directional antenna to improve system performance and operational range. A directional antenna focuses
the RF signal into a smaller area. When the BeltStation is located within this focused area of energy it will have a more
powerful signal which will improve range.
Only use approved antennas. Unauthorized antennas may be illegal.
Option 4
Install the BaseStation in a convenient location and use the
Tempest Remote Transciever connected with CAT 5 cable
and RJ-45 connectors to position antenna
s
in the most
suitable location. Use omni-directional antennas on the
Transeiver or use short lengths of LMR-195 coaxial cable to
separate antennas for additional spatial diversity.
Pairs of Directional Antennas must be aimed to
cover the same area