1. Some AP’s have few SM’s, some have many SM’s. I need timing to match either way. 2. Contention over control slots could cause jitter. I don’t want jitter, and there’s not that much cost to having a few more control slots….see point 3. 3. There’s only a 4% difference between 1 control slot and 8 control slots. If you want to fight for that 4% then go for it, but channel size and frame size are the battles I really want to win.
From: AF <af-boun...@af.afmug.com> On Behalf Of Carl Peterson Sent: Wednesday, May 04, 2022 10:24 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] Cambium Timing Why 8 control slots? Cambium recommends starting with 8 for over 150 subs per sector which seems like an insane number of subs on anything but M. On Wed, May 4, 2022 at 9:15 AM <dmmoff...@gmail.com <mailto:dmmoff...@gmail.com> > wrote: In case it’s not obvious, the 5mhz “receive start” happens before the 30mhz “transmit end”. So the 30mhz AP is going to cause uplink interference on the 5mhz AP…..assuming there’s channel overlap. From: dmmoff...@gmail.com <mailto:dmmoff...@gmail.com> <dmmoff...@gmail.com> Sent: Wednesday, May 04, 2022 10:10 AM To: 'AnimalFarm Microwave Users Group' <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: RE: [AFMUG] Cambium Timing I don’t know specifically how. But here’s frame calculator result for 30mhz, 75%, 10 miles, 8 control slots: AP Antenna Transmit End : 34161, 3.416176 ms AP Antenna Receive Start : 36530, 3.653073 ms AP Antenna Receive End : 49175 Now same at 5mhz: AP Antenna Transmit End : 27916, 2.791688 ms AP Antenna Receive Start : 30551, 3.055120 ms AP Antenna Receive End : 49104 Not even close to a match. If you haven’t been adjusting for channel size you’d better double check yours. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of castarritt Sent: Wednesday, May 04, 2022 10:04 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] Cambium Timing How does channel width affect timing? On Wed, May 4, 2022 at 7:39 AM <dmmoff...@gmail.com <mailto:dmmoff...@gmail.com> > wrote: Yes, those all match. The new challenge is comparing different channel sizes. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Carl Peterson Sent: Tuesday, May 03, 2022 11:14 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: [AFMUG] Cambium Timing We still have our cambium network timed as if it were collocated with legacy 100 gear but the 100 gear is long gone so I'm looking to re-time everything. Not finding colocation info about 450M, 450, 450i. Is timing all the same on them? Seems to be but I haven't done this in over a decade. -- 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 -- Carl Peterson PORT NETWORKS 401 E Pratt St, Ste 2553 Baltimore, MD 21202 (410) 637-3707
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