Does anyone know the frequency range of the "5.6" Doppler Radar? leb
At 3:08 PM -0500 11/24/09, Tom DeReggi wrote: >Forbes, > >Historically, The FCC has usually grandfathered pre-existing installations, to >protect those that have already deployed equipment. >You have 250Mhz available today between 5.4g and 5.7g. My recommendation >is.... If it works use it. If you have a airport radar system near by dont. > >Tom DeReggi >RapidDSL & Wireless, Inc >IntAirNet- Fixed Wireless Broadband > > > ----- Original Message ----- > From: Jack Unger > To: WISPA General List ; [email protected] > Sent: Saturday, November 21, 2009 1:16 PM > Subject: Re: [WISPA] 5.6 GHZ? > > > IMO, it is "iffy" for the reason you mentioned. The FCC (at the request of > the FAA and the NTIA) appears ready to deny use of the 5.6 spectrum in areas > where interference with airport weather radar takes place. I doubt that any > WISP would ague that their use of that spectrum is more important than safe > operation of commercial aircraft. I expect that newly certified 5 GHz > equipment will soon (within the next year) include a updated DFS algorithm > that looks for the presence of 5.6 GHz radar and switches away from 5.6 when > radar is detected. > > Your existing equipment may remain technically "legal" but you do run the > risk of possibly being blamed for aircraft crashes assuming you are unlucky > enough to be using 5.6 near airports where you could cause actual > interference to Terminal Doppler Weather Radar systems. See > <http://tiny.cc/LIlqB> for more information. > > jack > > > Travis Johnson wrote: > It's "iffy" because the FCC allowed the specific band, and now they are > trying to take it back away... two years later. If I never upgrade my radios, > does that mean I'm legal to run in that specific band forever? > > I just don't understand how they can allow it for 2 years, and then try > and take it away and think they are going to clean up the airways. > > Travis > Microserv > > 3-dB Networks wrote: >Motorola Canopy 5.4GHz radios updated with the latest firmware cannot >transmit in the 5600-5650 part of the band. > >I don't understand what is "iffy" about the band... Canopy operators have >been using it for two years or so now legally, and while DFS still has >issues in its current implementation, the FCC is working to make the DFS >detection better on the radio side and in turn make it harder to radio >manufacturers to allow clients to avoid using DFS > >Daniel White >3-dB Networks >http://www.3dbnetworks.com > > >-----Original Message----- >From: [email protected] [mailto:[email protected]] On >Behalf Of Jack Unger >Sent: Friday, November 20, 2009 11:02 PM >To: WISPA General List >Subject: Re: [WISPA] 5.6 GHZ? > >5470 - 5725 is a legitimate band but DFS2 must be used on the radios. >There is currently FCC activity to modify the DFS profiles for all >newly-certified radios to avoid aircraft radar system in the 5.6 GHz >part of the 5470-5725 band. The bottom line is - it's pretty "iffy". > >jack > > >Forbes Mercy wrote: > My new MIMO radios have 5.6 GHZ on them, I don't recall that frequency >being available in the US. Is it? > >Forbes > > > > > ---------------------------------------------------------------------------- >---- > WISPA Wants You! Join today! >http://signup.wispa.org/ > > > ---------------------------------------------------------------------------- >---- > >WISPA Wireless List: [email protected] > >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: [email protected] > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ > >-- >Jack Unger - President, Ask-Wi.Com, Inc. >Author - "Deploying License-Free Wireless WANs" >Serving the Broadband Wireless Industry Since 1993 >www.ask-wi.com 818-227-4220 [email protected] > >Sent from my Pizzicato PluckString... > > > > > >------------------------------------------------------------------------------ > > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! 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