Remember that as a GAA user just because you are in the SAS you do not have 
first in rights. The SAS only protects the licensed PAL holders. Anyone who 
shows up to play in the GAA channels has to fight among themselves the same as 
you do on any unlicensed channels.

 

I repeat, the first users on a GAA channel in the SAS have ZERO protections 
from other GAA users, even if they were already shown in the SAS as active 
registered users. The SAS will not protect you from someone else turning up 
equipment on the same GAA channel.

 

Thank you,

Brian Webster

www.wirelessmapping.com

 

From: AF [mailto:af-boun...@af.afmug.com] On Behalf Of Craig House
Sent: Sunday, July 25, 2021 11:17 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] T-Mobile PALs and CBRS GAA

 

I’ve been seeing this thread on the list for a while but hadn’t really read it. 
Probably worth keeping in mind when we do turn our stuff on to see how much 
interference there might be

Sent from my iPhone





On Jul 25, 2021, at 10:09, Jaime Solorza <losguyswirel...@gmail.com> wrote:



T-Mobile took over lots of 2 and 3Ghz stuff from Sprint...maybe could be 
related to that..

 

On Sun, Jul 25, 2021, 7:45 AM Tyson Burris <t...@franklinisp.net> wrote:

LOL, Mike you got to get in the game bro.

I typed that up half asleep as well.  

 

It’s not always that easy, but yes we have done all that.

You really think Crown, SBA, American care?

 

Crowns answer:  3ghz isn’t licensed anyone can use it plus you would need to 
contact the interfering party directly

 

Well they are partially right.  

 

Tyson Burris, President 
Internet Communications Inc. 
739 Commerce Dr. 
Franklin, IN 46131 
  
Office # 317-738-0320 
Cell/Direct # 317-412-1540 
Online:  <http://www.surfici.net> www.surfici.net 

 

ICI

What can ICI do for you? 


Broadband Wireless - PtP/PtMP Solutions - Mesh Wifi/Hotzones - IP Cameras - 
Fiber - Towers - Infrastructure. 
  
CONFIDENTIALITY NOTICE: This e-mail is intended for the 
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confidential and protected from disclosure. Any review, 
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unauthorized organizations or individuals is strictly 
prohibited. 

 

From: AF <af-boun...@af.afmug.com> On Behalf Of Mike Hammett
Sent: Sunday, July 25, 2021 8:59 AM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: Re: [AFMUG] T-Mobile PALs and CBRS GAA

 

I just woke up, so maybe my reading comprehension isn't the best yet.

 

 

Can't you use a spectrum analyzer to track down the sources of the interference 
and then work with the tower owner on who it is that's on that tower and 
contact information?



-----
Mike Hammett
 <http://www.ics-il.com/> Intelligent Computing Solutions
 <https://www.facebook.com/ICSIL>  
<https://plus.google.com/+IntelligentComputingSolutionsDeKalb>  
<https://www.linkedin.com/company/intelligent-computing-solutions>  
<https://twitter.com/ICSIL> 
 <http://www.midwest-ix.com/> Midwest Internet Exchange
 <https://www.facebook.com/mdwestix>  
<https://www.linkedin.com/company/midwest-internet-exchange>  
<https://twitter.com/mdwestix> 
 <http://www.thebrotherswisp.com/> The Brothers WISP
 <https://www.facebook.com/thebrotherswisp>  
<https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> 





  _____  


From: "Tyson Burris" <t...@franklinisp.net>
To: af@af.afmug.com
Sent: Sunday, July 25, 2021 5:24:25 AM
Subject: [AFMUG] T-Mobile PALs and CBRS GAA

Good morning AF Geeks-

 

Someone help me understand this better.  Several questions below.

We operate in six counties in Indiana.  Some rural some not so much.

In our main county (johnson) we are starting to get interference even when we 
are connected to the SAS.  

While we cannot prove anything yet, each tower we are seeing this on recently 
had new T-Mobile equipment deployed.  

 

I reached out to our attorney, Steve Coran, this week and asked him to pulled 
the county PAL winners. Listed here:

 

PAL winners for Johnson County, IN:

 

XF Wireless Investment, LLC (Comcast) -- 20 MHz

Actel, LLC (CenturyLink) -- 20 MHz

Wetterhorn Wireless L.L.C. (DISH) – 30 MHz

 

 

-Century Link has zero cell services of any kind in our county and currently 
not deploying in fixed wireless.

-Comcast floats off Verizon

-Dish also has zero cell services of any kind in our count

 

So what we ended up with is PAL winners who have nothing to offer locally yet 
unless subleasing.

 

Questions are:

 

is T-Mobile subleasing PAL’s from any of these three?

Is T-Mobile illegally just rotating PAL’s anywhere they want in the country 
instead of just local counties?

Anyway to clearly isolate the offending carrier sucking up so much spectrum and 
causing all the interference?

Another member brought up T-Mobile as a possible offender.  Did any data come 
from that?

What time of the day do the SAS databases sync with each other and does this 
force other carriers to cut back on total GAA – share nicely?

Has anyone found the other SAS providers to be better then GOOGLE.  Starting to 
think their system is worthless or inaccurate.  Truth is I think this whole 
concept of spectrum sharing is poorly handled and not fully tested on 3g.

If a carrier is on the same tower, how will that affect sync?  I ask because we 
found some very interesting work arounds and results with upload when we 
started playing with sync settings…ie distance, frame, channel.

If the customer SM is moved from one spot to another or from a roof to a post 
how badly does this affect the calculations on the SAS side?

 

 

Things we have discovered:

*       Even when we find noise floors on spectrum analysis in a reasonable 
range and move to the cleaner channel on the SAS the interference still trashes 
the uplinks.
*       In some cases the SAS is blocking the cleanest of channels which could 
be PAL related.
*       In some cases customer SM’s going off other ‘unaffected’ sites nearby 
may get knocked offline by the new noise.
*       In some cases we have had to drop off the SAS and found switching to 
other regulatory has allowed us to switch to cleaner channels and stabilized 
subs.  (which is exactly what we shouldn’t be doing)
*       We have a ton of 450m units going on towers as both new and upgrades.  
I am concerned that the more urban areas will struggle with capacity since we 
have to break this up across multiple sectors.

 

 

History and Equipment:

Again this seems very isolated to our more urban deployments which have 
historically been awesome in the 50Mhz channels prior to CBRS turn ups.

Our more rural areas are not seeing this issue at all.

All three locations have very specific and brand new T-Mobile equipment so this 
has been our assumption of the cause without such proof.

Equipment on these commercial towers has been no more then two 450i AP’s with 
KP 120’ sectors (pending 450m upgrades).

 

 

 

Tyson Burris, President 
Internet Communications Inc. 
739 Commerce Dr. 
Franklin, IN 46131 
  
Office # 317-738-0320 
Cell/Direct # 317-412-1540 
Online: www.surfici.net 

 

ICI

What can ICI do for you? 


Broadband Wireless - PtP/PtMP Solutions - Mesh Wifi/Hotzones - IP Cameras - 
Fiber - Towers - Infrastructure. 
  
CONFIDENTIALITY NOTICE: This e-mail is intended for the 
addressee shown. It contains information that is 
confidential and protected from disclosure. Any review, 
dissemination or use of this transmission or its contents by 
unauthorized organizations or individuals is strictly 
prohibited. 

 


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