The reality of amps is they also create some noise of their own. You will find that amps add from 3 to 6dB of noise and will reduce your SN ratio. Now we love to sell amps. But if it were me I would never put an amp on an omni antenna unless there wasn't anybody for 50 miles of the tower. But then why would I have a AP there? Amp only sectors, except in special applications.
Mike B > Whats with all of you and this thing against Amps SO WHAT if it amps the > noise the SNR is the same so its fine, the point is getting the S to a > point that its hearable otherwise amps would be nonsense and no one > would buy em and they wouldn't sell them anymore. The fact is you can't > get away from noise so make the signal as high as you can to hear it you > think u can hear a 35mw lucent from 1 mile away on an ap with no antenna > on the lucent and actually surf well with a few lil obstructions without > any whatsoever amp? If you can please tell me how cause we have tried, > even if your just amping enough to compensate cable loss at the AP, but > in my view amps don't really matter if there amping the nose cause there > amping everything so the SNR ratio is the same its just now instead of > hearing and yelling like an infant you're an adult. But that's my view I > might be a complete loony bin but then again it wudnt be the first time > I was told I was wrong. > > Chris > > -----Original Message----- > From: Tim Foster [mailto:[EMAIL PROTECTED] > Sent: Wednesday, August 13, 2003 10:27 PM > To: [EMAIL PROTECTED] > > Amps amplify signal *and* noise, so to my thinking, you'd want as little > amping as possible. > High gain antennas is good, but the higer the gain, the narrower the > vertical beamwidth. > > Good luck and have fun figuring out what's best. ;) > > (I started out with a 500mw amp and a 8dB omni. Everything got *much* > better when I went to sectors) > > Tim Foster > Aledo BroadBand > < www.AledoBroadBand.com > > Aledo's only high-speed ISP > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] Behalf Of Dan @ Wyoming.com >> Sent: Wednesday, August 13, 2003 9:06 PM >> To: [EMAIL PROTECTED] >> Subject: Re: [smartBridges] Cost Effective Tower! >> >> >> I would at least go with a 9dbi omni. Here is the one we have been >> using until we put up our 120 sectors. >> >> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3039990945&cate >> gory=11175 >> >> Very inexpensive. >> >> >> On Wed, 13 Aug 2003 20:55:25 -0500 >> "Dennis Burgess" <[EMAIL PROTECTED]> wrote: >> > I again, am getting ready to install my equipment on a tower. >> > We are planing on using a 5db omni with a 1watt amp. However, we do >> also have to install a 19db pacwireless grid antenna on the tower >> also. >> > >> > Would this work to save cash? >> > >> > 19db grid backhaul connected to Airbridge Outdoor --> Ethernet >> running down tower into shack --> into switch -- > Into Airpoint >> Indoor (i do belive this has 100mw) --> Power injector for amp --> >> up tower to amp --> 1 foot to omni. >> > >> > We need to get some cash coming in first then we will upgrade to 180 >> sectors. >> > >> > Let me know >> > >> > Dennis >> >> The PART-15.ORG smartBridges Discussion List >> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe >> smartBridges <yournickname> >> To Remove: mailto:[EMAIL PROTECTED] (in the body type >> unsubscribe smartBridges) >> Archives: http://archives.part-15.org >> > > The PART-15.ORG smartBridges Discussion List > To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe > smartBridges <yournickname> > To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe > smartBridges) > Archives: http://archives.part-15.org Mike Brownson Electro-comm Distributing 5015 Paris St, Denver, CO 80239 (303) 371-8182 (800) 525-0173 The PART-15.ORG smartBridges Discussion List To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe smartBridges <yournickname> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) Archives: http://archives.part-15.org
