John, My boss has field tested Aperto's gear to 15miles at full modulation... so a 30km cell radius (18 miles) is possible.
But the thing is that wouldn't be the average deployment... and with Cyclone gear you could push the system out that far too (because its going to be line of sight, and the cell is going to be on a mountain top probably) If the only thing you know about deploying gear is trees like the east coast... that expectation isn't going to work for you. If you live in the west where you have towers on mountaintops that can be seen from 70 miles away... its okay. My biggest problem with Jeff's analysis is how many customers signed up in a year... I don't think any WISP will grow 500 customers in 5 months. Or even 150 customers in 5 months (well I've setup a tower before and signed up that many customers to one... but that is the exception rather than the norm). The other catch would be... none of this math makes sense in a rip and replace... so unless your new... you have to rip an old system out to get WiMAX. I also have a slight issue with the assertion that Canopy does not do VoIP... it does it just fine and many Canopy WISP's also sell VoIP services (prime example... Skybeam/JAB). There also is never a 100% take rate on it (probably more like 50% tops) so that has to be factored in. With that said... besides the ugly CPE... we have chosen Aperto as our vendor of choice in the 3.65GHz band. I like it, and I think if you do field trials with it, it will win out over many of the other systems. Daniel White 3-dB Networks http://www.3dbnetworks.com >-----Original Message----- >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >Behalf Of John Scrivner >Sent: Thursday, April 23, 2009 12:13 AM >To: jefftho...@fastmail.fm; WISPA General List >Subject: Re: [WISPA] 3650Mhz and Wimax Vendors > >> >> Cell radius= 30km > >> The point is for a TCO, that's one tower site to cover a >> 20km radius, meaning less leases per month of 1k or more, so isntead >of 4 >> tower sites to cover this area ( and pay 4k per month ) >> > >So...how are you breaking the laws of physics with this system? Unless >you are serving the middle of the dessert then you probably need to >back your cell radius down to say 3km. I see above you use 2 different >cell radius figures. Is it possible you are overstating expectations >in a big way here Jeff? I am a proponent of WiMax but I am getting >sick and tired of seeing bloated specs to sell systems. It is NOT >something I want to see and I feel that these false representations >have hurt WiMax adoption for years. >Scriv > > >------------------------------------------------------------------------ >-------- >WISPA Wants You! Join today! >http://signup.wispa.org/ >------------------------------------------------------------------------ >-------- > >WISPA Wireless List: wireless@wispa.org > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
