Why not just make life easier on yourself.. Just use a online calculator and factor out the numbers....
http://www.gweep.net/%7Esfoskett/tech/poecalc.html if you need help translate the wire gauge size.. http://www.mogami.com/e/cad/wire-gauge.html You know one thing is that since sB uses only one cable for up then you have to factor in just one pair for power which means a difference between 14.5v and 17.1v over 200ft so if they had used 2 then you would have been able to use a 15V psu instead of a 18v psu on 200ft. That very same 15V would more then likely been enough for a 300ft run as well while you would have to use a 20v PSU with the 1 wire... Best regards, Eje "Aya" Gustafsson mailto:[EMAIL PROTECTED] The Family Entertainment Network http://www.fament.com Phone : 620-231-7777 Fax : 240-376-7272 - Your Full Time Professionals - Online Store http://www.wisp-router.com/ MikroTik, Star-OS, PACWireless, EnGenius, RF Industries -- KP> Since most power supply manufacturers go from 12V to 15V to 18V to 24V, KP> that limits your options some. You could figure out exactly what you KP> need with Ohm's Law if you had the resistance figure for the length of KP> CAT5 you were going to use. I don't have it and haven't taken the time KP> to drag out the multimeter to measure it. Probably should. KP> Kevin B. Proctor KP> Customer Service KP> Internet and International Orders KP> Electro Comm Distributing Inc KP> 5015 Paris St KP> Denver CO 90239 KP> USA KP> Phone: +1-303-371-8182 KP> 800-525-0173 KP> FAX: +1-303-371-8158 KP> 800-423-8018 KP> [EMAIL PROTECTED] KP> -----Original Message----- KP> From: [EMAIL PROTECTED] KP> [mailto:[EMAIL PROTECTED] On Behalf Of Hugh Carmichael KP> Sent: Friday, November 07, 2003 10:01 AM KP> To: [EMAIL PROTECTED] KP> Subject: RE: [smartBridges] 18v power? KP> My cable run is about 250 feet. I ended up using an 18V adapter from my KP> notebook PC. The SB site says 15-18V for runs longer than 180 feet. KP> My question is do you use 15V at 200 feet, 16V at 225 feet, 17V at 250 KP> feet etc. It seems like a pretty big gap between 12V to 18V to allow KP> for an additional 120 feet (to the max of 300) KP> -----Original Message----- KP> From: [EMAIL PROTECTED] KP> [mailto:[EMAIL PROTECTED] On Behalf Of Breiland, Derek KP> Sent: Friday, November 07, 2003 11:50 AM KP> To: '[EMAIL PROTECTED]' KP> Subject: RE: [smartBridges] 18v power? KP> It would be really nice if Smartbridges were to actually certify at KP> least KP> one if not several power supply options. KP> When we start talking about "be careful of the smoke" we are just KP> guessing KP> and in this business there is no room for guess work. If we had a KP> certified KP> product recommended from Smartbridges I think we would all feel better KP> about KP> using it and in the event we needed support on a problem from KP> SmartBridges KP> we would know we are using certified equipment to rule that out. KP> I am awaiting the release of the POE outdoor. Even though I have no KP> intentions on using it outdoors it does provide for a higher voltage KP> level KP> for long cable runs as well as some surge protection the way I KP> understand KP> it. Not the cheapest solution but just like anything else you get what KP> you KP> pay for. KP> Something bothers me about going out to the local Radio Shack for a KP> power KP> supply to run my AP's etc.. Not to knock Radio Shack but this is a KP> situation that needs a commercial grade type solution, not an 18VDC KP> power KP> supply intended for the general public. KP> -----Original Message----- KP> From: John Hokenson [mailto:[EMAIL PROTECTED] KP> Sent: Friday, November 07, 2003 1:29 AM KP> To: [EMAIL PROTECTED] KP> Subject: Re: [smartBridges] 18v power? KP> Mouser Electronics.... KP> JH KP> ----- Original Message ----- KP> From: "Jeremy Oswalt" <[EMAIL PROTECTED]> KP> To: <[EMAIL PROTECTED]> KP> Sent: Thursday, November 06, 2003 6:41 PM KP> Subject: [smartBridges] 18v power? >> Okay, I can't seem to find the articles in the archive concerning KP> where to >> get an 18v DC power supply that works with the Smartbridges. I know >> Smartbridges is coming out with one, but I can't wait another week. I KP> need >> two for a 170' run. Any recommendations? >> >> _____ >> >> Jeremy >> >> _____ >> >> >> >> The PART-15.ORG smartBridges Discussion List >> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe KP> smartBridges <yournickname> >> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe KP> smartBridges) >> Archives: http://archives.part-15.org KP> The PART-15.ORG smartBridges Discussion List KP> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe KP> smartBridges <yournickname> KP> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe KP> smartBridges) KP> Archives: http://archives.part-15.org KP> The PART-15.ORG smartBridges Discussion List KP> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe KP> smartBridges <yournickname> KP> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe KP> smartBridges) KP> Archives: http://archives.part-15.org KP> The PART-15.ORG smartBridges Discussion List KP> To Join: mailto:[EMAIL PROTECTED] (in the body type subscribe KP> smartBridges <yournickname> KP> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe KP> smartBridges) KP> Archives: http://archives.part-15.org KP> The PART-15.ORG smartBridges Discussion List KP> To Join: mailto:[EMAIL PROTECTED] (in the body type KP> subscribe smartBridges <yournickname> KP> To Remove: mailto:[EMAIL PROTECTED] (in the body type unsubscribe smartBridges) KP> Archives: http://archives.part-15.org -- [This E-mail scanned for viruses by Declude Virus] 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
