RST980
INSTALLATION
&
USER
MANUAL
34
2. Cabling
Using an externally mounted antenna provides an ideal solution for many
applications. If you have or plan to install an external antenna, it is very important that
the cables used meet the Iridium guidelines established for proper performance.
For optimal performance, we recommend using the shortest length of cable and the
fewest number of connectors possible.
3. 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:
a) Increasing the distance and moving the Iridium antenna off axis from the
source of the interference, and
b) Using an external band pass filter and an external antenna.
