130 feet on 5.8 through LMR 900 = serving about 20% of the area you could serve if the coax was not in place. I guess it depends on what folks call "working". ----- Original Message ----- From: "Chuck McCown - 3" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "WISPA General List" <wireless@wispa.org> Sent: Wednesday, August 20, 2008 8:00 AM Subject: Re: [WISPA] coax cables
> 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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If you are not the named addressee you should not >>> disseminate, distribute or copy this e-mail. >>> >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> > > > > -------------------------------------------------------------------------------- > WISPA Wants You! 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