Reflection aside, at 300 feet with a CM9 just put a couple of cheap omni's on it and save those grids for when you need then.
Did I really just say use an omni on a Backhaul? Shame on me :-> -----Original Message----- From: mikrotik-boun...@mail.butchevans.com [mailto:mikrotik-boun...@mail.butchevans.com] On Behalf Of Terri Kelley Sent: Thursday, June 11, 2009 1:23 PM To: Mikrotik discussions Subject: Re: [Mikrotik] 5.8GHz Grids Turning them down will help some. The issue is on the tx. Using "untuned" antennas (like out of band tx line) you get power reflected back at the radio doing the transmitting. Lower power means less reflected but it will still be there. How long and how much it will affect the radio I don't know. May last a good while. CM9 is cheap, you could try it and see what happens. Terri Kelley Network Engineer Farm to Market Broadband On Jun 11, 2009, at 3:09 PM, Mac Dearman wrote: > Aaron, > > I don't see why there would be a problem using those off frequency > grids > since (as you stated) you can turn down the power output and then on > top of > that you can point the antennas down or away from each other to > lessen the > signal level even further if needed. > > > Mac > > > >> -----Original Message----- >> From: mikrotik-boun...@mail.butchevans.com [mailto:mikrotik- >> boun...@mail.butchevans.com] On Behalf Of Aaron, Network >> Administrator, >> Great Lakes Internet >> Sent: Thursday, June 11, 2009 2:54 PM >> To: Mikrotik discussions >> Subject: Re: [Mikrotik] 5.8GHz Grids >> >> Do you think this would still be an issue with lower output power. I >> plan on using cm9's as I have stacks of them laying around. I also >> intended to lower the power on the cards. I try to keep backhauls in >> the >> -60's so I don't overdrive either end of the link. >> >> --- >> >> Aaron, MCP, Network+, A+ >> Network Administrator >> suppo...@greatlakes.net >> >> Great Lakes Internet, Inc >> 112 N. Howard >> Croswell, MI 48422 >> >> (810) 679-3395 >> MI Toll-Free (877) 558-8324 >> >> >> -----Original Message----- >> From: mikrotik-boun...@mail.butchevans.com >> [mailto:mikrotik-boun...@mail.butchevans.com] On Behalf Of Terri >> Kelley >> Sent: Thursday, June 11, 2009 1:47 PM >> To: Mikrotik discussions >> Subject: Re: [Mikrotik] 5.8GHz Grids >> >> Using a 5.8 grid on a radio running 5.2 will eventually trash the >> radio. Also with high gain antenna a link that short you will >> probably >> blow through your ap which can cause throughput issues. >> >> >> Terri Kelley >> Network Engineer >> Farm to Market Broadband >> >> >> >> On Jun 11, 2009, at 12:30 PM, Aaron, Network Administrator, Great >> Lakes Internet wrote: >> >>> Oops, wrong subject. >>> >>> I am going to be setting up a very short range (think 300ft) 5.2GHz >>> link. Do you think I would have any problem using a 5.8GHz grid for >>> this >>> purpose? I have several 27dBi grids in stock and I want to save some >>> of >>> the install cost. >>> >>> These are the grids I have: >>> http://www.l-com.com/item.aspx?id=10041 >>> >>> Thanks. >>> >>> --- >>> >>> Aaron, MCP, Network+, A+ >>> Network Administrator >>> suppo...@greatlakes.net >>> >>> Great Lakes Internet, Inc >>> 112 N. Howard >>> Croswell, MI 48422 >>> >>> (810) 679-3395 >>> MI Toll-Free (877) 558-8324 >>> >>> _______________________________________________ >>> Mikrotik mailing list >>> Mikrotik@mail.butchevans.com >>> http://www.butchevans.com/mailman/listinfo/mikrotik >>> >>> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik >>> RouterOS >>> _______________________________________________ >>> Mikrotik mailing list >>> Mikrotik@mail.butchevans.com >>> http://www.butchevans.com/mailman/listinfo/mikrotik >>> >>> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik >>> RouterOS >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <http://www.butchevans.com/pipermail/mikrotik/attachments/20090611/18de >> c >> c59/attachment.html> >> _______________________________________________ >> Mikrotik mailing list >> Mikrotik@mail.butchevans.com >> http://www.butchevans.com/mailman/listinfo/mikrotik >> >> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik >> RouterOS >> _______________________________________________ >> Mikrotik mailing list >> Mikrotik@mail.butchevans.com >> http://www.butchevans.com/mailman/listinfo/mikrotik >> >> Visit http://blog.butchevans.com/ for tutorials related to Mikrotik >> RouterOS >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 8.5.339 / Virus Database: 270.12.63/2169 - Release Date: >> 06/11/09 05:53:00 > > _______________________________________________ > Mikrotik mailing list > Mikrotik@mail.butchevans.com > http://www.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS -------------- next part -------------- An HTML attachment was scrubbed... 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