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A comment on Start Your Own ISP. Parent comment

Re:Start Your Own ISP by dboreham on Tuesday January 16, 2018 @10:50PM (#16165323)
Actually I didn't see anything about licensed spectrum on the site, but of course that helps with backhaul and high-end subscribers. For many years we really didn't see any interference issues with P2P links @5GHz but that has changed recently. We have been deploying dishes with shrouds to cut down on sidelobe gain.

My experience has been that interference is as much a problem at the CPE side (and much harder to diagnose there) than at the AP. I've also noticed that with Ubiquity/Mikrotik-grade radios in the 5GHz spectrum you can easily get interference from your own co-located radios at the same site, using different channels (because they are not so good about suppressing out-of-band radiation).

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Re:Start Your Own ISP by d00bianista on Wednesday January 17, 2018 @12:47PM (#16170019)
Shrouds should help against out-of-band radiation. I'm no expert but I assume that they do more harm in a single radio environment than without but they should help when you have multiple radios next to each other.
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Re:Start Your Own ISP by dboreham on Wednesday January 17, 2018 @03:13PM (#16171351)
Not only out-of-band, but also in-band interference from local and remote transmitters (whether direct by transmitters operating on the same channel, or indirect via out-of-band harmonics transmitted by low-cost radios).
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