The WiMAX Forum joined the opposition to a Satellite Industry Ass...
The WiMAX Forum joined the opposition to a Satellite Industry Assn. (SIA) petition seeking reconsideration of the 3.6 GHz order to protect Fixed Satellite Services (FSS) networks in the adjacent 3700-4200 MHz band from interference (CD June 14 p2).…
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The SIA’s proposed out-of- band emission limits and reduced power levels “overly restrictive,” the Forum said. The order establishes the out-of-band emissions limit at -43 dBW/MHz, which the SIA wants changed to -71.25 dBW/MHz. The WiMAX Forum said the limits set by the order “strike the proper balance of allowing for rapid rollout of wireless broadband solutions in the band while protecting adjacent FSS licensees.” The SIA also asked the FCC to reduce the 25 w power limit for wireless ISP devices, or to limit full-power wireless ISP transmissions to the lower half of the 3.6 GHz band to protect low-noise block-downcoverters (LNBs), which are amplification devices used in FSS earth stations. The WiMAX Forum backed a Wireless Communications Assn. (WCA) opposition, saying “ultimately satellite receiver front ends that do not provide sufficient adjacent channel rejection should not govern regulatory decisions for operation in nearby bands. Doing so would unjustly restrict transmit power levels for systems operating in 3650 MHz and severely impact the use of the band to deliver broadband services to the public.” Meanwhile, the SIA countered oppositions to its petition by WCA, Verizon and the Coalition of Champaign Urbana Community Wireless Network. The trade group said critics “ignore the basis and undeniable fact that the large power differential between immediately adjacent services authorized in the order is a recipe for disaster, particularly considering the unique sensitivity and critical importance of affected satellite operations and the novel characteristics of new operations in the 3650-3700 MHz band.” In a separate motion, BRN Phoenix asked the FCC to extend to Sept. 6 a deadline for filing a reply to Motorola, WCA and SIA oppositions to its reconsideration petition: “There is an emergency situation due to the temporary unavailability of the persons with whom BRNP must coordinate… to craft its reply.”