Commenters United Against Stadler Waiver for Train Protection System
Commenters opposed Stadler Signalling Deutschland’s request at the FCC (see 2304040055) to operate its automatic train protection system in the 100 kHz band at higher power levels than FCC rules allow. Comments were due at the FCC Thursday in docket…
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23-133. Hellen Systems raised concerns about protecting long-range navigation (Loran) and enhanced-Loran (eLoran) systems. “Stadler’s primary argument in requesting this waiver is that LORAN C, which operates in the 90-110 kHz band, is ‘obsolete’ and therefore no longer needed,” Hellen said: “This, unfortunately, is a gross mischaracterization of the status of LORAN technology and its current place as a compelling radio navigation solution to meet our growing resilient Position, Navigation and Timing (PNT) needs.” ELoran “is very much alive internationally and under serious consideration by multiple departments of the federal government for use domestically” to supplement GPS, the company said. “While the United States terminated its Loran-C system in 2010, interest in using the spectrum for radionavigation remains,” the Resilient Navigation and Timing Foundation said. Russia and Saudi Arabia still operate Loran-C radionavigation systems and eLoran is used in the U.K., China and South Korea, the group said: “The applicant has not made a compelling case that it should no longer be reserved for that purpose, nor that other frequencies are unsuitable and/or unavailable for applicant’s desired purpose.” Continental Electronics also raised Loran concerns. ELoran “remains relevant and is not obsolete,” the company said: “There is government wide and international interest in pursuing its development and deployment.” UrsaNav cited use across the world of Loran technology. “The 90-110 kHz spectrum is internationally reserved,” UrsaNav said: “Although use of Loran is in transition globally, several nations continue to operate Loran-C and/or its successor, Enhanced Loran.” Microchip Technology opposed the waiver, saying use of the band as proposed “could interfere with eLoran signal reception, which would undermine the ability for eLoran to serve as a back-up to GPS for national critical infrastructure and other PNT applications.”