In comments to the FCC on a series of Technological Advisory Council (TAC) spectrum management policy recommendations, ARRL said that while some of the Council’s recommendations are valid, it would be “highly inappropriate” to generalize about applying them broadly in all radio services. The comments, filed on January 31, were in response to a December 1, 2017, Public Notice in ET Docket No. 17-340. ARRL took the opportunity to strongly urge the FCC to reinstate a 2016 TAC noise floor study, which, ARRL asserted, apparently was terminated before it even got started.
“Indeed, it is difficult to imagine how the Commission can now…suggest the adoption of specific spectrum management principles, incorporating such concepts as receiver immunity, HCTs [harm claim thresholds], and interference temperature determinations without having…a firm grasp on ambient noise levels in basic RF environments and geographical areas,” the League told the FCC.