list of frequencys per site.....anyone? --- On Mon, 3/15/10, Randy Cosby <[email protected]> wrote:
From: Randy Cosby <[email protected]> Subject: Re: [WISPA] 5.4 legal ptp radios To: "WISPA General List" <[email protected]> Date: Monday, March 15, 2010, 12:38 PM Ignore my question - I've been out of the office and didn't read the responses that already answered it. On 3/15/2010 10:27 AM, Randy Cosby wrote: > Excellent news. Do you know if there is an easy way now to see where > the TDWR radars are (for curiosity's sake)? > > Randy > > > On 3/11/2010 3:56 PM, Jack Unger wrote: > >> Randy, >> >> The 5 GHz equipment approval process is currently on hold at the request >> of the FAA and the NTIA. Airport Terminal Doppler Weather Radars (TDWR) >> operate in the 5.6 GHz range and have been experiencing interference >> from current 5475-5725 MHz equipment. Because of this interference, a >> new Dynamic Frequency Selection (DFS) algorithm is being developed to >> allow newly-certified equipment to detect and avoid nearby TDWR radar >> systems. Until the new algorithm is developed and the FCC certification >> process re-started, there will be no new outdoor 5.4 equipment certified. >> >> To allow recertifications to restart before the new algorithm is >> developed and implemented, the wireless industry has been meeting with >> the FCC, FAA and NTIA. The FAA and NTIA agreed to allow 5 GHz outdoor >> equipment certifications to be restarted if the industry would provide a >> database that allowed an operator to a) See if their outdoor base >> stations are within 35 km of one of the airport TDWR sites, and b) If >> within 35 km, voluntarily register their equipment type and contact >> information in the database. Each airport TDWR site uses one frequency. >> Operators are requested to maintain a minimum 30-MHz center-to-center >> frequency separation away from the single frequency used by the >> neighboring TDWR. >> >> If/when TDWR interference does occurs, the voluntary database should >> help the FCC to contact the operator of the equipment that may be >> causing the interference and request a frequency change or request that >> the one nearby TDWR frequency be excluded from the DFS channel search list. >> >> Once the new TDWR-aware algorithm is ready for incorporation into new 5 >> GHz equipment, this database is expected to slowly become obsolete as >> the older equipment is retired. >> >> WISPA's FCC Committee is working with the industry group (Motorola, >> Cisco, Atheros, Intel, etc.) as well as with the FCC, FAA and NTIA to >> help find a solution to this TDWR-interference problem. We'll provide >> more information when significant developments occur. >> >> Jack Unger >> WISPA FCC Committee Chair >> 818-227-4220 >> >> >> Randy Cosby wrote: >> >> >>> I'm trying to compile a list of options for FCC certified 5.4 ptp radios >>> for short backhaul links. Off the top of my head, I can remember: >>> >>> Tranzeo TR-5A >>> Trango TrangoLINK-45 >>> Radwin 2000 (has mimo as well) >>> Motorola PTP 100, 200, 300, 500, 600 >>> >>> Any others I'm not aware of? Sure would be nice to see more mimo/N >>> radios certified in 5.4. Anyone working through the approval process >>> (ligowave?). >>> >>> >>> >>> >>> >> >> > -- Randy Cosby Vice President InfoWest, Inc 435-674-0165 x 2010 http://www.infowest.com/ "Letting off steam always produces more heat than light." - Neal A. Maxwell -------------------------------------------------------------------------------- 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/
