Quick follow up. Climb resolved it. Hung a P10 and we saw a 7db change on
those customers having issues. They dropped into 2x and are running well. I
did not compare the numbers on the closer customers.

 

Best regards,

Brandon Yuchasz

GogebicRange.net

www.gogebicrange.net <http://www.gogebicrange.net/> 

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of Brandon Yuchasz
Sent: Tuesday, June 30, 2015 8:18 PM
To: af@afmug.com
Subject: Re: [AFMUG] FSK 900mhz AP to SM should it read the same as a SM?

 

Ok so  to answer Steve's question. No filter on this I have never seen one
of the filters but have heard of them. 

 

I should point out that this AP is deployed now. The test as a SM was done a
few weeks ago along with a bunch of other equipment most SMs came in around
-72 a few came in around -80. We tested a  couple APs and they both were
-80ish. We assumed at the time that it was normal. Now I am doubting that
assumption.  This deployed AP is having some issues with far out SMs in the
8 and 9 mile range. The AP it replaced was not having these issues although
this one is higher  in elevation than the last one so not everything is
identical.

 

At this point a climb is planned for the AM to put in a p10 AP.

Best regards,

Brandon Yuchasz

GogebicRange.net

www.gogebicrange.net <http://www.gogebicrange.net/> 

 

From: Af [mailto:af-boun...@afmug.com] On Behalf Of cstann...@gmail.com
Sent: Tuesday, June 30, 2015 7:50 PM
To: af@afmug.com
Subject: Re: [AFMUG] FSK 900mhz AP to SM should it read the same as a SM?

 

>From what I understand FSK Canopy doesn't estimate incoming signal level,
more that it adjusts the rx pre-amp until it sees a signal it likes and then
based on rx pre-amp setting it guesses what the incoming signal was. So 2
different Canopy units can in the exact same situation and signal can show a
difference up to about 10db.

The calibration setting affects what signal level the SM shows but don't
play with that as you can fry the radio as Paul found out.

  _____  

From: "Brandon Yuchasz" <li...@gogebicrange.net> 

Sender: "Af" <af-boun...@afmug.com> 

Date: Tue, 30 Jun 2015 17:04:43 +0000

To: <af@afmug.com>

ReplyTo: af@afmug.com 

Subject: [AFMUG] FSK 900mhz AP to SM should it read the same as a SM?

 

So I am trying to trouble shoot some APs. FSK 900mhz.

I have a P9 AP when I set it to run as an SM it reads a -80 but when I put
an actual SM in its place it reads -72. Should there be a difference between
these two units or do I just have a crap AP?

 

 

Best regards,

Brandon Yuchasz

GogebicRange.net

www.gogebicrange.net <http://www.gogebicrange.net/> 

 

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