I have often wondered if it would be better to have two antennas in one given direction, with one being \ pol and the other antenna being used for / pol. I wondered if special diversity would allow us to achieve better penetration results to clients without using splitters.
Basically order the two of the standard moto antennas, but use one polarity on each. Eric Rogers Precision Data Solutions, LLC (317) 831-3000 x200 From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, October 25, 2011 2:49 PM To: WISPA General List; WISPA General List Subject: Re: [WISPA] Splitters with Motorola Canopy 320 - Results Update You are not really talking a phased array here. Lengths should not be critical. ----- Reply message ----- From: "Josh Luthman" <[email protected]> To: "WISPA General List" <[email protected]> Subject: [WISPA] Splitters with Motorola Canopy 320 - Results Update Date: Tue, Oct 25, 2011 2:39 pm Premades? Or did you make your own and get as close as humanly possible? Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Tue, Oct 25, 2011 at 1:55 PM, Chuck Hogg <[email protected]> wrote: > It is my understanding that they need to be of the same length. That > was our design, all the same length...we used 18" LMR 240 for this > situation. > > Regards, > Chuck > > > > On Tue, Oct 25, 2011 at 1:30 PM, Kristian Hoffmann <[email protected]> > wrote: >> Do you have a reference for calculating the proper cable lengths and >> antenna spacing based on frequency when using splitters in a >> configuration like this? >> >> Thanks, >> >> -Kristian >> >> On 10/25/2011 06:39 AM, Chuck Hogg wrote: >>> I thought I would post back on here what we did and our results. >>> These are preliminary. >>> >>> Equipment: >>> 1 x 320AP >>> >>> Configuration with only one sector: >>> Power set to 19.9dB (per the manual for legal power settings) >>> AP set to -65 power leveling >>> Client signals at the AP were -65 (or thereabouts, this fluctuates >>> from -65 to -70) for all clients. >>> Client receive levels ranged from -61 to -75. >>> >>> Equipment: >>> 1 x 320AP >>> 4 x 16.5dB 90 degree sectors >>> 2 x 4 way splitters from L-Com >>> >>> Configuration with only one sector: >>> Power set to full 25dB (per the manual for legal power settings, >>> assuming a -6.5dB of loss) >>> AP set to -65 power leveling >>> Client signals at the AP were -65 (or thereabouts, this fluctuates >>> from -65 to -70) for all clients. >>> Client receive levels ranged from -64 to -78. >>> >>> So essentially by adding a 4 way splitter the clients receive levels >>> increased by about 3.5-4dB. Tower receive levels were unchanged, as >>> most of the clients were power leveled down. Only one client is >>> transmitting at full power now. That client is also the highest >>> signal on both sides. Most client transmit levels are also running at >>> a higher power now as well. >>> >>> Conclusion: >>> I think that running 1 x 320AP x 4 sectors through splitters is a >>> little aggressive. If the majority of your clients are going to have >>> decent signal levels, then I see no problems with it. However, I >>> think that our current situation is a little on the edge. I think >>> that if you are looking for an inexpensive way to use 320AP's, I would >>> recommend this solution. I think that this solution has a higher net >>> gain over using an 8dB omni. My results show that it is pretty >>> consistent on being about a total loss of about 8dB using a 4 way >>> splitter. You can overcome 6.1dB of that loss in turning up the >>> transmit power of the radios. Your net loss is about 2.5-3dB, >>> however you are able to focus the sectors a little better. >>> >>> In the long run on future deployments, we will likely use 2 AP's and 4 >>> sectors with 4x2way splitters (MIMO). Once they reach capacity, we'll >>> add additional AP's. >>> >>> Regards, >>> Chuck >>> >>> >>> -------------------------------------------------------------------------------- >>> 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/ >>> >> >> >> -- >> Kristian Hoffmann >> System Administrator >> [email protected] >> http://www.fire2wire.com >> >> Office - 209-543-1800 | Fax - 209-545-1469 | Toll Free - 800-905-FIRE >> >> >> >> -------------------------------------------------------------------------------- >> 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/
