Re: [WISPA] What's this 900mhz Interference look like?
Depends up near Canada and certain other locations power on 450 is limited Sent from my iPhone On Aug 31, 2012, at 3:21 PM, wrote: > 1500 watts PEP. > Sent from my BlackBerry® > > -Original Message- > From: Matt Jenkins > Sender: wireless-boun...@wispa.org > Date: Fri, 31 Aug 2012 11:56:42 > To: WISPA General List > Reply-To: WISPA General List > Subject: Re: [WISPA] What's this 900mhz Interference look like? > > ___ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > > ___ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] What's this 900mhz Interference look like?
1500 watts PEP. Sent from my BlackBerry® -Original Message- From: Matt Jenkins Sender: wireless-boun...@wispa.org Date: Fri, 31 Aug 2012 11:56:42 To: WISPA General List Reply-To: WISPA General List Subject: Re: [WISPA] What's this 900mhz Interference look like? ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] What's this 900mhz Interference look like?
We have one around here too. IIRC they can do up to 50 Watts tx
power too right?
On 08/25/2012 07:39 AM, Jason Bailey
wrote:
Chris,I am a ham and wisp down
in Jackson. I know all to well what this is. ATV
amateur television. I see it on mine as well. A friend
operates an amateur tv repeater on 910.250 near Lansing
and the band is OPEN lately. I was just
changing frequencies to get around it this morning. Hit
me off-list and I can give you more info if you like.
Jason
--- On Sat,
8/25/12, Chris Fabien wrote:
From: Chris Fabien
Subject: [WISPA] What's this 900mhz Interference look
like?
To: "WISPA General List"
Date: Saturday, August 25, 2012, 10:16 AM
I've got an interference problem
affecting two of my 900mhz towers.
Attached is a Airview scan of what I'm seeing, the
910mhz signal is
the concern. It is intermittent, usually occurring in
the early to mid
morning for a few minutes or up to hours.
My first thought is baby monitor/cordless phone but
I'm seeing it on
the south facing sector of two towers, separated by 3
miles
north-south distance. The south tower sees it at
around a -60 and the
north tower around a -70. These are 100-120ft towers
in a heavily
wooded area, I would not expect ground-level
interference to be
visible from both, right?.
So, any suggestions as to possible sources? Driving
around with an
antenna is my next step, but hard to do on an
intermittent signal.
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Re: [WISPA] What's this 900mhz Interference look like?
do you have a Canopy AP around? you can do a AP Eval and also look for GPS out of sync errors On Sat, Aug 25, 2012 at 10:35 AM, Chris Fabien wrote: > Reviewing my logs actually it looks like it may sometimes start in > middle of night. If I look at noise floor on the sector, it degrades > starting early as midnight, gets worst early morning like 5-6am and > then goes back to normal around 8 or 9. Thats what the past few nights > show. The only time I actually get stations dropping offline is in the > 6-9 timeframe. Yes does happen on weekends a well. Some kind of > atmospheric condition allowing me to see a signal I usually cant? This > tower's been up for 2 years and never seen anything like this before. > > On Sat, Aug 25, 2012 at 10:23 AM, timothy steele > wrote: > > hard to say but it is very narrow and not very much data passing i would > say > > Power Company or Water Dept checking Equipment.. i know some Cell towers > > use 908 might be getting some bleed.. very hard to know with 900mhz.. it > > happen every morning at same time? on weekends too? > > > > Thanks, > > > > On Sat, Aug 25, 2012 at 10:16 AM, Chris Fabien > wrote: > >> > >> I've got an interference problem affecting two of my 900mhz towers. > >> Attached is a Airview scan of what I'm seeing, the 910mhz signal is > >> the concern. It is intermittent, usually occurring in the early to mid > >> morning for a few minutes or up to hours. > >> > >> My first thought is baby monitor/cordless phone but I'm seeing it on > >> the south facing sector of two towers, separated by 3 miles > >> north-south distance. The south tower sees it at around a -60 and the > >> north tower around a -70. These are 100-120ft towers in a heavily > >> wooded area, I would not expect ground-level interference to be > >> visible from both, right?. > >> > >> So, any suggestions as to possible sources? Driving around with an > >> antenna is my next step, but hard to do on an intermittent signal. > >> > >> ___ > >> Wireless mailing list > >> Wireless@wispa.org > >> http://lists.wispa.org/mailman/listinfo/wireless > >> > > > > > > ___ > > Wireless mailing list > > Wireless@wispa.org > > http://lists.wispa.org/mailman/listinfo/wireless > > > ___ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] What's this 900mhz Interference look like?
Chris,I am a ham and wisp down in Jackson. I know all to well what this is. ATV amateur television. I see it on mine as well. A friend operates an amateur tv repeater on 910.250 near Lansing and the band is OPEN lately. I was just changing frequencies to get around it this morning. Hit me off-list and I can give you more info if you like. Jason --- On Sat, 8/25/12, Chris Fabien wrote: From: Chris Fabien Subject: [WISPA] What's this 900mhz Interference look like? To: "WISPA General List" Date: Saturday, August 25, 2012, 10:16 AM I've got an interference problem affecting two of my 900mhz towers. Attached is a Airview scan of what I'm seeing, the 910mhz signal is the concern. It is intermittent, usually occurring in the early to mid morning for a few minutes or up to hours. My first thought is baby monitor/cordless phone but I'm seeing it on the south facing sector of two towers, separated by 3 miles north-south distance. The south tower sees it at around a -60 and the north tower around a -70. These are 100-120ft towers in a heavily wooded area, I would not expect ground-level interference to be visible from both, right?. So, any suggestions as to possible sources? Driving around with an antenna is my next step, but hard to do on an intermittent signal. -Inline Attachment Follows- ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] What's this 900mhz Interference look like?
Reviewing my logs actually it looks like it may sometimes start in middle of night. If I look at noise floor on the sector, it degrades starting early as midnight, gets worst early morning like 5-6am and then goes back to normal around 8 or 9. Thats what the past few nights show. The only time I actually get stations dropping offline is in the 6-9 timeframe. Yes does happen on weekends a well. Some kind of atmospheric condition allowing me to see a signal I usually cant? This tower's been up for 2 years and never seen anything like this before. On Sat, Aug 25, 2012 at 10:23 AM, timothy steele wrote: > hard to say but it is very narrow and not very much data passing i would say > Power Company or Water Dept checking Equipment.. i know some Cell towers > use 908 might be getting some bleed.. very hard to know with 900mhz.. it > happen every morning at same time? on weekends too? > > Thanks, > > On Sat, Aug 25, 2012 at 10:16 AM, Chris Fabien wrote: >> >> I've got an interference problem affecting two of my 900mhz towers. >> Attached is a Airview scan of what I'm seeing, the 910mhz signal is >> the concern. It is intermittent, usually occurring in the early to mid >> morning for a few minutes or up to hours. >> >> My first thought is baby monitor/cordless phone but I'm seeing it on >> the south facing sector of two towers, separated by 3 miles >> north-south distance. The south tower sees it at around a -60 and the >> north tower around a -70. These are 100-120ft towers in a heavily >> wooded area, I would not expect ground-level interference to be >> visible from both, right?. >> >> So, any suggestions as to possible sources? Driving around with an >> antenna is my next step, but hard to do on an intermittent signal. >> >> ___ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> > > > ___ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
Re: [WISPA] What's this 900mhz Interference look like?
hard to say but it is very narrow and not very much data passing i would say Power Company or Water Dept checking Equipment.. i know some Cell towers use 908 might be getting some bleed.. very hard to know with 900mhz.. it happen every morning at same time? on weekends too? Thanks, On Sat, Aug 25, 2012 at 10:16 AM, Chris Fabien wrote: > I've got an interference problem affecting two of my 900mhz towers. > Attached is a Airview scan of what I'm seeing, the 910mhz signal is > the concern. It is intermittent, usually occurring in the early to mid > morning for a few minutes or up to hours. > > My first thought is baby monitor/cordless phone but I'm seeing it on > the south facing sector of two towers, separated by 3 miles > north-south distance. The south tower sees it at around a -60 and the > north tower around a -70. These are 100-120ft towers in a heavily > wooded area, I would not expect ground-level interference to be > visible from both, right?. > > So, any suggestions as to possible sources? Driving around with an > antenna is my next step, but hard to do on an intermittent signal. > > ___ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > > ___ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
