Attached is Bob McGwier, N4HY's, report as chair of the Advanced Digital Communications Working Group (Annex C to Document 12). 73, Brennan T. Price, N4QX Chief Technology Officer American Radio Relay League 3545 Chain Bridge Road Suite 209 Fairfax VA 22030-2708 Tel +1 703 934-2077 Fax +1 703 934-2079