PTP820 antennas

Hi.

This might be a little odd quiestion, but I would like fully understand about antennas specifications.

Which class are Cambium antennas 2 or 3 feet for PTP820 links, Class 3 or 4? Is this information added in specifications table (added below)?

What is the benefit of having Class 4 antenna over Class 3? Is there any better 'performance' regarding 'cutting' side bands?

Thanks

they are class 3. 

Class 4 antenna is more immune to interference, which allow customer for better freuqency re-use. No differnce on antenna gain. and class 4 antnena has much higher cost.

Attachment is a white paper from Commscope of class 4 antenna, which is quite useful to better understand class 4 antenna.

Allen

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