sentences:  A March 31, 1922 musical program from High River was reported heard in Hawaii, about 2,800 miles (4,500 kilometers) away.In Canada there was no formal category for stations making entertainment broadcasts intended for the general public until April 1922, so the earliest stations making broadcasts operated under a mixture of Experimental, Amateur, and, as was the case with VAW, governmental authorizations.In 1922 federal regulators added a new licence classification of "Private Commercial Broadcasting station", and in late April 1922 an initial group of twenty-three station assignments was announced, including two in Calgary