Does the path have clear LOS?  If not, that can cause signal strength ratio 
issues.

Also, is the path loss near what you calculate?  Alignment on a sidelobe can 
give you bad signal strength ratio.


From: That One Guy /sarcasm 
Sent: Wednesday, September 09, 2015 11:05 AM
To: [email protected] 
Subject: Re: [AFMUG] PTP650 Issue

if its the same as the ptp500 there is a way to calculate which antenna is off 
but i cant find the documentation one of the guys that worked here went to a 
cambium training where they taught him that, I assume it still applies

On Wed, Sep 9, 2015 at 11:01 AM, Josh Luthman <[email protected]> 
wrote:

  I was thinking signal vs noise.  Like SNR.

  Seems impressive to know there's a cable issue when the signals are the same.

  Josh Luthman
  Office: 937-552-2340
  Direct: 937-552-2343
  1100 Wayne St
  Suite 1337
  Troy, OH 45373

  On Sep 9, 2015 11:55 AM, "SmarterBroadband" <[email protected]> 
wrote:

    Just a noise issue?  The manual says;



    Signal Strength Ratio is an aid to debugging a link. If it has a large 
positive or negative value then investigate the following potential problems:


    • An antenna coaxial lead may be disconnected. 

    • When spatial diversity is employed, the antenna with the lower value may 
be pointing in the wrong direction. 

    • When a dual polar antenna is deployed, the antenna may be directed using 
a side lobe rather than the main lobe.



    I was thinking bad cable?  Maybe antenna or radio.







    From: Af [mailto:[email protected]] On Behalf Of Josh Luthman
    Sent: Wednesday, September 09, 2015 8:40 AM
    To: [email protected]
    Subject: Re: [AFMUG] PTP650 Issue



    Noise at the one end.  The other has 20 with the same signal.

    Josh Luthman
    Office: 937-552-2340
    Direct: 937-552-2343
    1100 Wayne St
    Suite 1337
    Troy, OH 45373

    On Sep 9, 2015 11:36 AM, "SmarterBroadband" <[email protected]> 
wrote:

    We have an issue with one of our PTP650 links.  Bad Signal Strength Ratio.

    One end is 6.4 the other 19.5

    Issue is probably at one end.

    Question is which end to check first.

    I have attached the System Stats of each end.

    Anyone able to see which end may have the problem from these?

    Thanks

    Adam









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