If you have any distance at all to go, and you want it to work, you have no choice. Transmission line loss adds DIRECTLY to receiver noise figure.
----- Original Message ----- From: <[EMAIL PROTECTED]> To: "WISPA General List" <wireless@wispa.org> Sent: Wednesday, August 20, 2008 6:23 AM Subject: Re: [WISPA] coax cables > Eliptical waeguide is also $13 a foot, connectors are over $200 each, you > need a bunch of special hardware to hang it and a dehydrator or nitrogen > system to keep it dry. > > I just don't picture the WRAP board group buying waveguide > > Bob > Sent from my Verizon Wireless BlackBerry > > -----Original Message----- > From: "Chuck McCown - 3" <[EMAIL PROTECTED]> > > Date: Tue, 19 Aug 2008 22:49:24 > To: WISPA General List<wireless@wispa.org> > Subject: Re: [WISPA] coax cables > > > Elliptical waveguide will lose 3 dB in 250 feet. > > ----- Original Message ----- > From: "Mike Brownson" <[EMAIL PROTECTED]> > To: "WISPA General List" <wireless@wispa.org> > Sent: Tuesday, August 19, 2008 10:33 PM > Subject: Re: [WISPA] coax cables > > >> To give you the facts. You can use just about any coax you want. But >> you >> will have loss. The smaller the cable the higher the loss. >> >> Examples: >> RG8 lose 3 db in 17 ft >> LMR400 lose 3db in 26 ft >> LMR600 lose 3 db in 40 ft >> 1/2 heliax lose 3 db in 49 ft >> LMR900 lose 3 db in 60 ft >> 5/8 heliax lose 3 db in 64 ft >> >> >> Remember that for every 6dB in loss you lose half your transmit and >> receive >> range. So with 34 ft of RG 8 instead of 5 miles you get 2.5. So use >> whatever cable you can get away with and still have the performance you >> need. If you need every miliwatt to be useful then use coax only as a >> short >> jumper. >> >> Mike B >> >> >> On 8/19/08 9:45 PM, "Matt Jenkins" <[EMAIL PROTECTED]> wrote: >> >>> LMR 400? Are you crazy? Heliax 1/2 is the only way to go! >>> >>> [EMAIL PROTECTED] wrote: >>>> It can but the loss is high and the braid is much less. Stick with LMRs >>>> 400 *,5 '22@ )+_3 "2,/(:4 32*" 4:+3( >>>> Sent from my Verizon Wireless BlackBerry >>>> >>>> -----Original Message----- >>>> From: RickG <[EMAIL PROTECTED]> >>>> >>>> Date: Tue, 12 Aug 2008 10:33:57 >>>> To: WISPA General List<wireless@wispa.org> >>>> Subject: [WISPA] coax cables >>>> >>>> >>>> I'm running coax down my tower and came across and RG8/U. Can this be >>>> used on 5GHz? >>>> -RickG >>>> >>>> >>>> ----------------------------------------------------------------------------- >>>> --- >>>> WISPA Wants You! 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