Re: [AFMUG] Your a strange one, Mister Grinch
thanks for tips!!! Jaime Solorza Wireless Systems Architect 915-861-1390 On Wed, Feb 19, 2020 at 9:43 AM wrote: > 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 *On Behalf Of *Jaime Solorza > *Sent:* Wednesday, February 19, 2020 9:46 AM > *To:* AnimalFarm Microwave Users Group > *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 > 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 > 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 Thursdayradio 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 > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > -- > > Lewis Bergman > > 325-439-0533 Cell > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] Your a strange one, Mister Grinch
or someone has a nearby transmitter that is turned up well beyond
what might be needed. I'm inclined to agree with Jaime's theory.
bp
On 2/19/2020 8:40 AM, Ken Hohhof wrote:
I was trying to convince myself it could be
some weather or military radar that does a 360 degree sweep
every 4 minutes, and that PIM was creating a difference
frequency of 950 MHz. But your explanation makes more sense.
In which case somebody has an OOBE problem or is not on their
assigned frequency, or maybe the STL needs a narrow bandpass
filter on their receiver. Like WISPs used to put on their 900
MHz equipment when located near a paging tower.
From: AF
On Behalf Of Jaime
Solorza
Sent: Wednesday, February 19, 2020 10:33 AM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Your a strange one, Mister Grinch
Suspect it's a utility because of
intervals associated with polling. The water utilities has
over 800 well and lift stations working at 928.xxx and
952.xxxMHz ...you can actually hear them polling on a
scanner!
On Wed, Feb 19, 2020, 9:18 AM Bill
Prince <part15...@gmail.com>
wrote:
and 900 MHz is not all that directional; a signal
strong enough to overload will be difficult to find a
direction on.
bp
On 2/19/2020 8:05 AM, Ken Hohhof
wrote:
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
On Behalf Of Jaime Solorza
Sent: Wednesday, February 19, 2020 9:46 AM
To: AnimalFarm Microwave Users Group
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 Thursdayradio
technician replaced STL and same
issue...no BERs detected. Going to visit
sites tomorrow..
The
FM frequency is 97.5 MHz and transmitter
Re: [AFMUG] Your a strange one, Mister Grinch
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 On Behalf Of Jaime Solorza Sent: Wednesday, February 19, 2020 9:46 AM To: AnimalFarm Microwave Users Group 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 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 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 Thursdayradio 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 -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] Your a strange one, Mister Grinch
I was trying to convince myself it could be some weather or military radar that does a 360 degree sweep every 4 minutes, and that PIM was creating a difference frequency of 950 MHz. But your explanation makes more sense. In which case somebody has an OOBE problem or is not on their assigned frequency, or maybe the STL needs a narrow bandpass filter on their receiver. Like WISPs used to put on their 900 MHz equipment when located near a paging tower. From: AF On Behalf Of Jaime Solorza Sent: Wednesday, February 19, 2020 10:33 AM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Your a strange one, Mister Grinch Suspect it's a utility because of intervals associated with polling. The water utilities has over 800 well and lift stations working at 928.xxx and 952.xxxMHz ...you can actually hear them polling on a scanner! On Wed, Feb 19, 2020, 9:18 AM Bill Prince mailto:part15...@gmail.com> > wrote: and 900 MHz is not all that directional; a signal strong enough to overload will be difficult to find a direction on. bp On 2/19/2020 8:05 AM, Ken Hohhof wrote: 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 <mailto:af-boun...@af.afmug.com> On Behalf Of Jaime Solorza Sent: Wednesday, February 19, 2020 9:46 AM To: AnimalFarm Microwave Users Group <mailto: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 mailto: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 mailto: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 Thursdayradio 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 -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] Your a strange one, Mister Grinch
Suspect it's a utility because of intervals associated with polling. The water utilities has over 800 well and lift stations working at 928.xxx and 952.xxxMHz ...you can actually hear them polling on a scanner! On Wed, Feb 19, 2020, 9:18 AM Bill Prince wrote: > and 900 MHz is not all that directional; a signal strong enough to > overload will be difficult to find a direction on. > > bp > > > > On 2/19/2020 8:05 AM, Ken Hohhof wrote: > > 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 *On Behalf > Of *Jaime Solorza > *Sent:* Wednesday, February 19, 2020 9:46 AM > *To:* AnimalFarm Microwave Users Group > *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 > 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 > 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 Thursdayradio 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 > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > -- > > Lewis Bergman > > 325-439-0533 Cell > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] Your a strange one, Mister Grinch
and 900 MHz is not all that directional; a signal strong enough to overload will be difficult to find a direction on. bp On 2/19/2020 8:05 AM, Ken Hohhof wrote: 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 On Behalf Of Jaime Solorza Sent: Wednesday, February 19, 2020 9:46 AM To: AnimalFarm Microwave Users Group 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 Thursdayradio 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 -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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 On Behalf Of Jaime Solorza Sent: Wednesday, February 19, 2020 9:46 AM To: AnimalFarm Microwave Users Group 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 mailto: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 mailto: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 Thursdayradio 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 -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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 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 > 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 Thursdayradio 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 >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > > -- > Lewis Bergman > 325-439-0533 Cell > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] Your a strange one, Mister Grinch
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 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 Thursdayradio 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 > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- Lewis Bergman 325-439-0533 Cell -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
[AFMUG] Your a strange one, Mister Grinch
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 Thursdayradio 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 -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
