5150 != DFS.
----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ----- Original Message ----- From: "Fred Goldstein" <[email protected]> To: [email protected] Sent: Sunday, November 30, 2014 11:23:35 PM Subject: Re: [WISPA] 5 ghz backhaul sanity check On 11/30/2014 11:55 PM, Josh Luthman wrote: > I have a link at 6.6 miles with a pair of Rocket M5. It's at 5765 and > has worked beautifully for a couple of years now. It is -55 on each > side with 2' dishes. > > I'm looking at doing another link that's almost identical (one similar > tower) and my calculations are showing if I use 5660 at 14dbm tx power > I should see -56. Does this sound right at all? 6.6 miles seems far > off the top of my head for the DFS band. The ERP limit there is +30, so if you're using +14 tx power, then the antenna gain is only 16 dB or you're noncompliant. That's what a NanoStation does on DFS. A big dish (like the 2 footer, around 30 dB gain) would still help with receive gain but you would have to turn down the Rocket to something lower (0 dBm). UBNT DFS stuff is approved for +41 dBm EIRP or so on the 5150 band, though. -- Fred R. Goldstein k1io fred "at" interisle.net Interisle Consulting Group +1 617 795 2701 _______________________________________________ Wireless mailing list [email protected] http://lists.wispa.org/mailman/listinfo/wireless
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