Well if it is exactly so many seconds it will surely help.
Start with low gain and work your way up with antennas.
Or just try to sample the area with an omni and signal strength alone.
Enough samples and you will have a decent direction.
From: Ken Hohhof
Sent: Wednesday, February 19, 2020 9:05 AM
To: 'AnimalFarm Microwave Users Group'
Subject: Re: [AFMUG] Your a strange one, Mister Grinch
Good luck. I hate trying to locate interference sources. If it only occurs
for 1-2 seconds once every 4 minutes, that will be even more difficult.
Maybe at least you can determine what frequency and channel width it is using,
and the signal level. To figure out if it is on the exact same frequency, or
maybe an adjacent channel but so strong it is overloading the receiver front
end. I know there are some high powered paging systems around 930 MHz, not
sure what would be up at 950.
Is the STL analog or digital? And is it like a backhaul link with tons of fade
margin, or could a relatively modest signal interfere with it?
From: AF <af-boun...@af.afmug.com> On Behalf Of Jaime Solorza
Sent: Wednesday, February 19, 2020 9:46 AM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: Re: [AFMUG] Your a strange one, Mister Grinch
Will see what I can find today and tomorrow...
On Wed, Feb 19, 2020, 5:08 AM Lewis Bergman <lewis.berg...@gmail.com> wrote:
Electric Utilities are pretty constant in my experience. If it is licensed,
you can call the FCC. They have the best equipment for finding interfering
signals.
On Tue, Feb 18, 2020 at 10:08 PM Jaime Solorza <losguyswirel...@gmail.com>
wrote:
Just got a late evening call to help find a possible interference issue on
a licensed STL working at 950MHz that gets "interrupted" every four minutes
for a second or so since last Thursday....radio technician replaced STL and
same issue...no BERs detected. Going to visit sites tomorrow..
The FM frequency is 97.5 MHz and transmitter checks out as well as antenna
and waveguide.
I do know 895-900MHz is getting hosed from across border as well as
Verizon's PCS bands from new provider across border. Going to take SA up the
mountain and see what it shows ..
The four minute interval intrigues me...as in SCADA system polling...the
utilities do use nearby frequencies...any ideas from my fine feathered friends
welcomed...
Goodnight, Jaime Solorza
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