Beam SD7 series User Manual page 56

Cabling
Using an externally mounted antenna provides an ideal solution for
many applications. It is very important that both the antenna cabling and
antenna are BEAM approved products. Always ensure all RF connectors
are screwed together firmly and ensure there are no sharp bends in the
cabling between the DriveDOCK Extreme and the antenna.
RF Interference
All wireless devices, including satellite telephones, are susceptible to RF
(radio frequency) interference from other electronic devices. This problem
is more evident when numerous antennas and broadcasting devices are
located within close proximity to each other.
Symptoms of RF Interference
Symptoms of RF interference often resemble those that arise when an
Iridium phone is being operated with an obstructed view of the sky.
Some of these symptoms include; erratic or no signal strength indication
dropped calls or warbled or otherwise distorted voice.
These symptoms may be intermittent or persistent, depending largely on
the interference source, its distance, strength and frequency relative to the
Iridium unit.
Mitigation of RF Interference
Iridium Service degradation due to RF interference can be significantly
improved by:
Increasing the distance and moving the Iridium antenna off axis from the
source of the interference.
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