[AFMUG] standard 900 MHz Canopy channels
I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
would assume that would be doable, but that leaves no guard bands at all. we run 906,915,924 and tell everyone else to do so as well... - Original Message - From: Ken Hohhof via Af To: af@afmug.com Sent: Sunday, September 28, 2014 12:18 PM Subject: [AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
Funny how the incumbent is the one who has to change because he has customers being affected, while the new guy can be a honey badger and not give a s**t. From: CBB - Jay Fuller via Af Sent: Sunday, September 28, 2014 2:08 PM To: af@afmug.com Subject: Re: [AFMUG] standard 900 MHz Canopy channels would assume that would be doable, but that leaves no guard bands at all. we run 906,915,924 and tell everyone else to do so as well... - Original Message - From: Ken Hohhof via Af To: af@afmug.com Sent: Sunday, September 28, 2014 12:18 PM Subject: [AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
We are getting good results colocating Rocket M900s with MDS and Phoenix Contact FHSS 900 systems in SCADA environment. You can shift center channels and have several width options. Jaime Solorza On Sep 28, 2014 11:18 AM, "Ken Hohhof via Af" wrote: > I have always assumed the standard channels are 906, 915 and 924. > > But I keep getting competitors going on 906 and 922. I understand they > are probably trying to avoid high power licensed stuff like paging around > 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. > Especially when this is a newcomer and they have no subs yet and don't > match your timing and don't care because ... they don't have subs yet and > aren't suffering the effects of the interference. I have found that a hot > interferer on 922 will pretty much blow you off the air if you try to use > 915, unless the timing parameters match, even though that's only 1 MHz of > overlap. > > So are the default channels actually 906, 914 and 922 in the real world? > >
Re: [AFMUG] standard 900 MHz Canopy channels
Ken, We run 906, 915, 924 on all towers except one. That one has 924 plastered with signal all around it, for 7 years like that. On that tower, we do run 906, 914, 922 and it has been running that way since 2007 -Original Message- From: Af [mailto:af-bounces+paulm=pdmnet@afmug.com] On Behalf Of Ken Hohhof via Af Sent: Sunday, September 28, 2014 1:18 PM To: af@afmug.com Subject: [AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
906,915,924 are the way to go. Properly synced Canopy needs no guardband. Properly synced ePMP needs 5mhz guardband. Unsynced anything technically needs guardband=2*channelwidth. From: Af [mailto:af-bounces+slebrun=muskoka@afmug.com] On Behalf Of CBB - Jay Fuller via Af Sent: Sunday, September 28, 2014 3:08 PM To: af@afmug.com Subject: Re: [AFMUG] standard 900 MHz Canopy channels would assume that would be doable, but that leaves no guard bands at all. we run 906,915,924 and tell everyone else to do so as well... - Original Message - From: Ken Hohhof via Af <mailto:af@afmug.com> To: af@afmug.com Sent: Sunday, September 28, 2014 12:18 PM Subject: [AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
OK, thanks. From: Shayne Lebrun via Af Sent: Monday, September 29, 2014 10:22 AM To: af@afmug.com Subject: Re: [AFMUG] standard 900 MHz Canopy channels 906,915,924 are the way to go. Properly synced Canopy needs no guardband. Properly synced ePMP needs 5mhz guardband. Unsynced anything technically needs guardband=2*channelwidth. From: Af [mailto:af-bounces+slebrun=muskoka@afmug.com] On Behalf Of CBB - Jay Fuller via Af Sent: Sunday, September 28, 2014 3:08 PM To: af@afmug.com Subject: Re: [AFMUG] standard 900 MHz Canopy channels would assume that would be doable, but that leaves no guard bands at all. we run 906,915,924 and tell everyone else to do so as well... - Original Message - From: Ken Hohhof via Af To: af@afmug.com Sent: Sunday, September 28, 2014 12:18 PM Subject: [AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
Re: [AFMUG] standard 900 MHz Canopy channels
I have several sites with KP 120's doing ABAB. A couple of the sites are pretty close to each other and it was necessary to have one site using 906 and 924 and the other on 910 and 920. Non-colocated 4MHz carrier offset doesn't always work, for example, one SM was seeing a 924 and a 920 sector on each site within 3dB, but we later found out that SM was out of alignment. Actually it was perfectly aimed between both sites because I think they were originally on a tower about 12 miles away in that direction and when we turned up the new sites, they just worked so nobody ever went out and aimed them properly. The other thing with the KP 120's is, while they are nice compact antennas with decent forward gain for the size, they don't have the greatest F/B ratio. So SM Tx power control is a must. Luckily all of the 900 radios can do it. Til-Tek sectors perform great, but there was no way in hell I'd ever be able to put four of them on say a 25G, too much load. When you're stuck with 900 as a last resort, you find ways to make things work, and it's usually never pretty considering the limited spectrum and horrible interference. On 9/29/2014 10:35 AM, Ken Hohhof via Af wrote: OK, thanks. *From:* Shayne Lebrun via Af <mailto:af@afmug.com> *Sent:* Monday, September 29, 2014 10:22 AM *To:* af@afmug.com <mailto:af@afmug.com> *Subject:* Re: [AFMUG] standard 900 MHz Canopy channels 906,915,924 are the way to go. Properly synced Canopy needs no guardband. Properly synced ePMP needs 5mhz guardband. Unsynced anything technically needs guardband=2*channelwidth. *From:*Af [mailto:af-bounces+slebrun=muskoka@afmug.com] *On Behalf Of *CBB - Jay Fuller via Af *Sent:* Sunday, September 28, 2014 3:08 PM *To:* af@afmug.com *Subject:* Re: [AFMUG] standard 900 MHz Canopy channels would assume that would be doable, but that leaves no guard bands at all. we run 906,915,924 and tell everyone else to do so as well... - Original Message - *From:*Ken Hohhof via Af <mailto:af@afmug.com> *To:*af@afmug.com <mailto:af@afmug.com> *Sent:*Sunday, September 28, 2014 12:18 PM *Subject:*[AFMUG] standard 900 MHz Canopy channels I have always assumed the standard channels are 906, 915 and 924. But I keep getting competitors going on 906 and 922. I understand they are probably trying to avoid high power licensed stuff like paging around 930. But if I go on 915, I find it overlaps with 922 and bad juju ensues. Especially when this is a newcomer and they have no subs yet and don't match your timing and don't care because ... they don't have subs yet and aren't suffering the effects of the interference. I have found that a hot interferer on 922 will pretty much blow you off the air if you try to use 915, unless the timing parameters match, even though that's only 1 MHz of overlap. So are the default channels actually 906, 914 and 922 in the real world?
