2. The formula is—
where—
“S” means the sum;
“RR” means a reference rate of £3,300, being the fee payable for an authorisation under a licence for use of a 8.33 kHz channel over a surface area of 71,000 square nautical miles;
“SA” means 71,000, being the number corresponding to the surface area (in square nautical miles) of the United Kingdom;
“π” means 3.142;
“h” means the number corresponding to the height (in feet) of the designated operational coverage specified in the licence granted to the licensee; and
“r” means the number corresponding to the radius (in nautical miles) of a circle of equivalent area to the designated operational coverage specified in the licence.