RE: [smartBridges] Playing together nicely

[Tom Haynes]

Title: Message

Is more than one Linksys considered Linksii? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Chance Sent: Friday, August 22, 2003 6:55 PM To: '[EMAIL PROTECTED]' Subject: RE: [smartBridges] Playing together nicely I fear my problem isn't the gsm (not yet atleast that's going up next to me in a month maybe add bandpass then) its with way toooo much ism 2.4 around me 3 wisps all using 2.4 and lots of stupid linksys's L   From: Galen Manners [mailto:[EMAIL PROTECTED] Sent: Friday, August 22, 2003 10:31 AM To: [EMAIL PROTECTED]   You really need to look at the spectrum and see what you are dealing with.  If you are getting interference in band (ex: a noisy telex amp on channeel 1 causing probs on ch11) a bandpass won't do you any good.  The only thing a bandpass will do is filter out frequencies just outside of the ism band.  Say you are colo on a pcs tower (Lots of 1.9g) this can cause poor sensitivity on your rx.  A bandpass would be good.  Cellular is roughly 800 to 900mhz.  Lots of high power paging is around 900mhz.  Third order harmonics are your worst nightmare.  800mhz X 3 is bingo.....2.4g.  Most 2.4 amps have band pass filters built in.  Telex and YDI both do.  You really need to identify if the problem is on your channel or near your channel.   Bandpass filters are great if you are colocating and have lots if noise just outside your band.  You can add them to help the sensitivity of your radio.  Be aware of the loss associated with them.  Just adding an amp does not compensate for the loss in the filter (when receiving).  You are adding the filter to improve rx sense.  If you nock your rx down 3db you just lost 3db of rx sense regardless of how much you amp it after that.   Don't use a bandpass if your noise is within the 2.4ism band.  It won't help.  Keep in mind if you are using an amp you have already installed a bandpass. ----- Original Message ----- From: Kevin Summers To: [EMAIL PROTECTED] Sent: Thursday, August 21, 2003 11:43 PM Subject: RE: [smartBridges] Playing together nicely     Collocating on the same tower with HAM radio, cellular, or pager equipment that operates in a frequency that is close to, or is a harmonic of the 2.4GHz band. I think someone mentioned on another list that some part of 900-923MHz can interfere with 2.4GHz.   A bandpass filter will filter out ALL other frequencies except for the one that you want. The Teletronics (and others for this application) allows 2400-2483Mhz and effectively blocks all other frequencies.   Kevin Summers KISTech Internet Services Inc. www.kistech.com   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Chris Chance Sent: Thursday, August 21, 2003 6:42 PM To: '[EMAIL PROTECTED]' Subject: RE: [smartBridges] Playing together nicely Someone break down to me when bandfilters are required or useful exactly?   From: Earl Campbell [mailto:[EMAIL PROTECTED] Sent: Thursday, July 10, 2003 2:27 PM To: [EMAIL PROTECTED]   His name is Sal Navidi and phone # is 602 843-0670 Home and 602 791-7042 cell. Yes I am happy with mine. Sal is a long time ham radio bud of mine. He gives ya fair prices and stands behind his stuff. I dont know if he has anything right now tho. You will have to call him. Earl UpHi.net     -------Original Message-------   From: [EMAIL PROTECTED] Date: Thursday, August 21, 2003 08:36:12 AM To: [EMAIL PROTECTED] Subject: RE: [smartBridges] Playing together nicely   Thank you for the offer Earl... I am down south of Houston...   I would like to have the name/phone of your test equipment freind... Happy with that HP8559A?   Dave -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of Earl Campbell Sent: Thursday, July 10, 2003 8:12 AM To: [EMAIL PROTECTED] Subject: RE: [smartBridges] Playing together nicely I have a friend that deals in used test equipment. I got an HP 8559A .01 to 21 Ghz analizer for $1000.00 I'll e-mail you his phone and address if you want. Earl - UpHi.net PS Where are you located, I might let you use mine for a while. Helping each other is what it's all about here.    -------Original Message-------   From: [EMAIL PROTECTED] Date: Thursday, August 21, 2003 07:13:22 AM To: [EMAIL PROTECTED] Subject: RE: [smartBridges] Playing together nicely   I guess one of these days I am going to need to get a spectrum analyzer... anybody know of a decent SA that you can get for less than $1000? Maybe one that uses a laptop/card/software?   Dave   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Lars Gaarden Sent: Thursday, August 21, 2003 4:46 AM To: [EMAIL PROTECTED] Subject: Re: [smartBridges] Playing together nicely     George wrote: > I wonder why if he is on channel 1 and you are on channel 11 you would > have these problems? > Anyone have any helpfull insight?   The Linksys might have bad sideband suppression and/or perhaps he is using a noisy amp. Hard to tell without proper testing equipment, though.   Dave, is it possible to change the polarity on your link?   -- LarsG   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 .   ____________________________________________________   IncrediMail - Email has finally evolved - Click Here

<<image001.gif>>