Grounding of ADS_B antenna w/ SMA connector(s)

[jwyman]

I understand ground in general is a good thing but did not know if it is required with the ADS-B supplied antennas for XRange and others.

1) Does grounding these antennas provide a cleaner signal?

2) Is it necessary to ground these antennas? If so, how and what are people using to do this feat?

[abcd567]

AirNav ADS-B 1090 MHz Outdoor antenna with SMA connector

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