Jonathan To reach a greater distance you need both better TX gain AND RX gain, the max you can do for PtMP is 36dBm EIRP. Using something like our 200mW (new not on the site just yet :) and 8dBi omni will increase the rage dramatically.
Some examples: AP-2000 15dBm output, -82@11Mb plus range extender 5dBi about 1.5dBm cable loss = 18.5dB total EIRP Demarc 200mW AP 23dBm output, -91@11Mb plus 8Dbi omni about 1.8 cable loss = 29.2db total EIRP Not running the numbers thought the SOM cal using a standard 15dBm card as a client: http://www.demarctech.com/techsupport/demarc-cals-som.html At .5 miles the SOM with the Orinoco is 1.3dBm where The Demarc 200mW AP will be have 12.2 SOM. Considering every 3dB doubles the power you can see how this will increase the range of a system. I you are using our 100mW cards on the client end your will increase the distance even further! I want to point out the real magic in not completely because of the output power but the RX levels! We have customers lighting up local developments with one or two access points, and with the 13dBi gain antennas and 100mW cards indoor with good connections. Sincerely Tony Morella Demarc Technology Group Office: 908-996-7995 Cell: 908-246-9170 Fax: 908-847-0202 email: [EMAIL PROTECTED] http://www.demarctech.com Open Chat Server http://www.demarctech.com:8000 Yahoo IM: tonymorella Wireless Solution Provider > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Jonathan Heiliger > Sent: Wednesday, October 16, 2002 5:40 PM > To: [EMAIL PROTECTED] > Subject: [BAWUG] Antenna selection > > > > I apologize in advance for the newbie question, but I'm > hoping for some guidance on antenna selection. I'd like to > establish a public access point for my neighbors and am > trying to determine what antenna will perform the best in my > situation. I've done a bit of research on the site, poked at > the archives and have looked at Hyperlink, Superpass, etc. > for info but don't feel like I have enough info to invest a > few hundred bucks in an antenna setup. > > I'm currently using an AP-2000 with the ORiNOCO "range > extender," and that has difficulty reaching the edge of my > property. I live in between the middle and 3/4 of the way > from my neighbors -- 80% of my neighbors are covered in 180 > degrees, 20% in the remaining 180 degrees -- the distance > that has to be covered is 250-400FT. Unfortunately line of > sight is nearly completely obstructed by trees and other > foliage, but no other buildings, etc. are in the way. > > Any recommendations or other reading material would be > appreciated, thanks! > > > -jh- > > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless > -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
