Don't run them without antenna connected. Very sensitive there. /Eje Sent via BlackBerry from T-Mobile
-----Original Message----- From: Andrew Jones <a...@jonesy.com.au> Date: Sat, 20 Jun 2009 14:41:15 To: <lakel...@gbcx.net>; WISPA General List<wireless@wispa.org> Subject: Re: [WISPA] MiniPCI Radio Cards Does anyone have an opinion on the mikrotik R5H cards, particularly compared to the ubiquiti cards? lakel...@gbcx.net wrote: > 5/8" Heliax is the largest diameter you can use for 5.8 GHz. LDF4.5-50 > > > Sent from my Verizon Wireless BlackBerry > > -----Original Message----- > From: David Hulsebus <cont...@portative.net> > > Date: Sat, 20 Jun 2009 00:18:39 > To: WISPA General List<wireless@wispa.org> > Subject: Re: [WISPA] MiniPCI Radio Cards > > > I've put in Heliax 1/2" through 1 1/2" cable for 900 and 2.4 I've had > some success with 5.8GHz at less than 100ft, never tried it any further > either though - it's not within Andrews specs. I believe they provide > attenuation data to 2.4 GHz. For 5.8 GHz I use their eliptical Air > Heliax cable, I first inherited some when we purchased an old fm radio > station tower. I almost got their 900MHz 8ft dish too, but they wanted > as a backup for their new tower site as they use it to transmit their > music to the tower from the station about 20 miles away. > > Never lost a radio due to rf issues. It is more up front but protects > our more expensive transmitters very well and keeps us from climbing > regularly. I'll put Mikrotik boards on a tower or tank with POE and if I > loose one I'm not out thousands. I use external antennas and lightning > arrestors. We also use APC ethernet surge protectors on all gear at a > site, once out of the POE towards coming towards the switch and another > prior to entering the switch port. > > Dave Hulsebus > > Josh Luthman wrote: > >> Does that work with 2.4 or 5.8? Or 900? >> >> On 6/19/09, Kurt Fankhauser <k...@wavelinc.com> wrote: >> >> >>> The 5/8 heliax is cheaper and has slightly less loss. I don't use the >>> LMR-900 anymore as it weighs twice as much also. >>> >>> Here is a picture of what you could do with the Heliax :) I just had a >>> lightning storm role by this tower last night which just happens to be by my >>> house. Needless to say I slept like a baby knowing I was not going to have >>> to replace any equipment from lightning damage. I sleep a lot better at >>> night now then I use to a few years back... :) >>> >>> Kurt Fankhauser >>> WAVELINC >>> P.O. Box 126 >>> Bucyrus, OH 44820 >>> 419-562-6405 >>> www.wavelinc.com >>> >>> >>> >>> -----Original Message----- >>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>> Behalf Of Josh Luthman >>> Sent: Friday, June 19, 2009 10:48 AM >>> To: WISPA General List >>> Subject: Re: [WISPA] MiniPCI Radio Cards >>> >>> Augh..4 bucks a foot. >>> >>> What's the difference between LMR900 and 5/8 heliax? >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> "When you have eliminated the impossible, that which remains, however >>> improbable, must be the truth." >>> --- Sir Arthur Conan Doyle >>> >>> >>> On Fri, Jun 19, 2009 at 10:30 AM, Kurt Fankhauser <k...@wavelinc.com> wrote: >>> >>> >>> >>>> I have done this with LMR400, I ran 150 foot of LMR400 up a tower and put >>>> >>>> >>> a >>> >>> >>>> 250mw amp at the top. With the choosen antenna I was right at 36db power >>>> output. It actually worked very well. Just as good or better than having >>>> the >>>> radio's at the top. It was a cheap way to put your radio's on the ground. >>>> BUT the first time the site got a lightning hit again I was screwed :( >>>> >>>> So I quickly figured out the cost of replacing amps after 1 hit that I >>>> could >>>> have spent the extra money on the LMR900 or 5/8 HELIAX and I would have >>>> actually come out cheaper by not going the amped route. >>>> >>>> Kurt Fankhauser >>>> WAVELINC >>>> P.O. Box 126 >>>> Bucyrus, OH 44820 >>>> 419-562-6405 >>>> www.wavelinc.com >>>> >>>> >>>> -----Original Message----- >>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>>> Behalf Of Josh Luthman >>>> Sent: Friday, June 19, 2009 10:09 AM >>>> To: WISPA General List >>>> Subject: Re: [WISPA] MiniPCI Radio Cards >>>> >>>> Is that how we can get 2.4 and 5.8 gear on the ground, with an amplifier? >>>> >>>> I would love having the gear inside and just coax and amp and antenna >>>> outside way up there! >>>> >>>> On 6/19/09, Jeremy Parr <jeremyp...@gmail.com> wrote: >>>> >>>> >>>>> 2009/6/19 Scott Carullo <sc...@brevardwireless.com> >>>>> >>>>> >>>>> >>>>>> My first advice is ditch the amp, not necessary and most likely illegal >>>>>> power. You can get what you need out of the minipci card. >>>>>> >>>>>> You will want to purchase from US distributor, search for RB411 and you >>>>>> should have plenty of options, best one probably close to you so you >>>>>> >>>>>> >>> get >>> >>> >>>>>> them quickly prices are roughly the same everywhere. Titan Wireless is >>>>>> >>>>>> >>>> an >>>> >>>> >>>>>> excellent source of Mikrotik Product and they are good to work with. >>>>>> >>>>>> >>>>>> >>>>> I would like to ditch the amps, and run the radios tower-top, but we >>>>> >>>>> >>> have >>> >>> >>>> so >>>> >>>> >>>>> much lightning here. I'd like to limit towertop equipment to an amp, >>>>> >>>>> >>>> since >>>> >>>> >>>>> its easy to troubleshoot and replace. This will let me locate the radios >>>>> >>>>> >>>> in >>>> >>>> >>>>> the shack at the base, and troubleshoot easily without a climb, or 20 >>>>> >>>>> >>>> trips >>>> >>>> >>>>> up and down replacing one bit at a time. I'm only planning on a 250mw or >>>>> 500mw amp. >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>> ---------------------------------------------------------------------------- >>> >>> >>>> ---- >>>> >>>> >>>>> 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/ >>>>> >>>>> >>>>> >>>> -- >>>> Josh Luthman >>>> Office: 937-552-2340 >>>> Direct: 937-552-2343 >>>> 1100 Wayne St >>>> Suite 1337 >>>> Troy, OH 45373 >>>> >>>> "When you have eliminated the impossible, that which remains, however >>>> improbable, must be the truth." >>>> --- Sir Arthur Conan Doyle >>>> >>>> >>>> >>>> >>>> >>>> >>> ---------------------------------------------------------------------------- >>> >>> >>>> ---- >>>> WISPA Wants You! 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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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