Selecting Antennas; Placing External Antennas; Placing Gps Antennas; Antenna Approvals And Safety Considerations - Multitech MultiConnect Cell MTC-LVW2 User Manual

INSTALLING AND USING THE DEVICE
Antenna diversity provides an advantage in complex environments because if one receive antenna has a poor
signal due to an interference null pattern, the other antenna is likely not in the null and has better reception. The
radio compares the reception from both receive antennas and uses the one with the strongest signal.
Important: You must deploy with two antennas, unless your carrier has authorized you to deploy with one
antenna.

Selecting Antennas

Select an antenna based on your product and application. Typically, both antennas are the same and either can be
the main receive antenna.

Placing External Antennas

Antennas are usually a quarter wavelength apart from each other. With multiband radios where the quarter
wavelengths in each band are diverse from each other, this rule may not be practical. Choose spacing based on the
band used most often or the band with connection difficulty. Some environments are harsher on particular bands.
MultiTech products have antenna connectors at the best spacing for the product size.
Placing antennas in close proximity to each other is not optimal, but you can do it if necessary. It depends on the
signal strength to and from each antenna.
If the antennas are too close together for your application, use a similar antenna on a short cable for the second
receive only antenna.

Placing GPS Antennas

GPS antennas need a clear view of the sky. Position the GPS antenna so the diversity antennas do not block its
view of the sky.

Antenna Approvals and Safety Considerations

Note the following:
Carriers conduct antenna diversity tests.
There are no EMC concerns about antenna diversity.
All antennas need to have a minimum flammability rating.
Safety requirements depend on your final product.
Unless otherwise noted, antennas certified by MultiTech are not approved for outdoor use. Do not extend
these antennas outside of any building.

Diversity and Power Draw

There are no significant power draw differences.
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MultiConnect Cell MTC-LVW2 User Guide