30 dB EIRP with a 44 DBi antenna on each side over 73 miles produces -75 signal. I'll let him say what he did to make it work, but it's certainly possible.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com From: Bret Clark Sent: Saturday, October 31, 2009 11:02 AM To: WISPA General List Subject: Re: [WISPA] Backhaul Questions Man...what is the EIRP on these links that people are posting high bit rates? As someone else stated, gotta wonder if the FCC won't start getting suspicious at some point. Travis Johnson wrote: 73 miles... and I get 28Mbps total (14Mbps each direction) using a 20mhz channel. Travis Josh Luthman wrote: Travis is getting 28 megs on a really long backhaul - like 58 miles? You will not see >30. On 10/31/09, Eric Rogers <[email protected]> wrote: Ok guys...Looking for both Mikrotik experience and others. We currently have a Mikrotik backhaul between each of our towers using NStreme and we have been extremely happy with the performance. We recently upgraded a tower because we were hitting 15M or so during peak times and was afraid it couldn't handle much more. We upgraded that backhaul to a Motorola PTP for future capacity. The questions: MT Gurus: Each backhaul ranges in distance, each ranges from 3 miles (3 backhauls) and the rest are about 12 miles (5 backhauls). Since we have been using Mikrotik, I have reliably seen up to 10 Meg, and I am afraid 15 Meg is pushing the envelope on a 20 MHz channel. How much capacity can I reliably push on a 20 MHz channel using NStreme? Other Gurus: I understand the following are loaded questions, but budget is around $1000-3000 range and the capacity needs to be around the 60Meg mark (30 each way or without a defined 1:1 guarantee, capability to flex and be able to push 30M each way). If I start upgrading to larger backhauls on busy links, what type of equipment should I look at? What can support VoIP? Anything that GPS times for frequency reuse? Anything work in the 5.4GHz range at a 12 mile distance? Eric Rogers Precision Data Solutions, LLC (317) 831-3000 x200 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] 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: [email protected] 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: [email protected] 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: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
