Sometimes they only have enough spectrum for one good sized channel. So they can deploy all on one channel, but they have very narrow sectors and they rely on having a grid of towers so each tower is filling in the gaps on another tower. Picture interlocking fingers.

I've never done this, but I understand you have to plan it very carefully and accept that you will have dead spots. You might have LOS to a tower and have no or marginal signal because of unlucky geography. Like maybe you're supposed to be covered by the site which is blocked by a hill, but you can see the one that doesn't have a sector pointed at you.

It's a way to make the most of a limited chunk of spectrum, but I think you'd rather do it a different way if you can.


------ Original Message ------
From: "Mathew Howard" <>
To: "af" <>
Sent: 4/10/2018 10:23:29 AM
Subject: Re: [AFMUG] LTE 3.65 and GPS Sync

I haven't ever heard of anybody doing AAA in 3.65ghz... but yeah, I guess that would work to just leave huge gaps.

Generally, as long as none of your clients can see more than one AP on the same channel you're fine, as far as self-interference goes (and that applies to pretty much any synced system).

On Tue, Apr 10, 2018 at 9:16 AM, Adam Moffett <> wrote:
You can still do ABAB.

That AAA thing you're talking about is with three very narrow sectors. So that cell has huge gaps which are filled in from an adjacent cell.

------ Original Message ------
From: "Matt" <>
Sent: 4/10/2018 9:49:53 AM
Subject: [AFMUG] LTE 3.65 and GPS Sync

How does LTE work with GPS sync? As I understand instead of ABAB they typically do AAA for frequency reuse? Does this also mean if you have
two LTE sites say 8 miles apart they will have minimal interference
with each other even using same channels?

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