ARRL is opposing a Petition for Rulemaking (RM-11815) by several vehicle manufacturers that calls on the FCC to “adopt field strength limits in Section 18.305 that will allow higher power wireless charging technologies operating in the 79 – 90 kHz range” to accommodate what the petitioners call “next-generation” wireless power transfer for electric vehicles (WPT-EV). Comments filed on October 29 by ARRL contend that the petition is “woefully incomplete and inadequate” in its analysis of consequent out-of-band emissions from WPT-EV systems in the low- and medium-frequency ranges using upward of 11 kW of power. Given the high power levels, ARRL said harmonic emissions from WPT-EV systems could be appreciable, with the AM Broadcast Band and Amateur Radio as potential interference victims. “Interference potential from intentional radiators requires substantial evaluation,” ARRL asserted in its remarks.
The issue of WPT-EV is a World Radiocommunication Conference 2019 (WRC-19) agenda item, for which studies are still under way. The Petition “quite obviously prejudges the outcome of WRC-19 Agenda Item 9.1.6,” ARRL said, stressing that the Petition is simply premature at this point.