A radio station used for the purposes set out in AS 44.99.002 shall
(1) be licensed by the appropriate agency of the federal government to operate a broadcasting station of not less than 250 watt capacity in the state;
(2) have operated radio broadcasting continuously for a least one year before the date of its employment by the governor and during this period have broadcast daily radio programs totaling at least 75 hours in each month;
(3) have broadcast programs that have been received by the public over long wave radio receivers over a radius of at least 300 miles from the broadcasting station, and on demand shall furnish letters from the radio audience confirming reception within the required area;
(4) have invested at least $20,000 in real estate, buildings, transmitters, power equipment, antenna, radio masts, musical instruments, office equipment and other property, used or useful in the operation of the radio station exclusively.