Friday, July 26, 2013
ARRL to Petition for Modernized Technical Rules
The ARRL board directed General Counsel Chris Imlay, W3KD, at its July meeting to prepare a Petition for Rule Making with the goal of eliminating the "symbol rate" restrictions on amateur HF digital communications.
Currently, FCC rules limit HF symbol rates - the number of times per second that a change of state occurs, according to ARRL CEO Dave Sumner, K1ZZ - to either 300 or 1200 bauds. New digital modes that use higher symbol rates within standard RTTY and SSB bandwidths of 2.8 kHz are being stymied by the rules, the League says, so it will petition the FCC to change the rules to "encourage both flexibility and efficiency in the employment of digital emissions by amateur stations."