Antenna and cable impedance

Digi RF products are engineered to drive a 50 ohm load. All RF cables or antennas attached to the antenna connector should provide a 50 ohm match.

Ensure that the cable being used is rated for the frequency of the module you are using, we recommend LMR-400 cable for short to medium length cables. Here is a link to a useful calculator to estimate cable loss based on length and type of cable used: http://www.timesmicrowave.com/cgi-bin/calculate.pl
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