The total available operating time is divided approximately equally between Common and Special Programmes. Passive use of one antenna attracts a charge factor of 0.15, Passive use of two or more antennas is charged at 0.25. Passive use of any antenna whilst the same Associate is actively using another part of the UHF or VHF systems is free.
Accounting is performed for individual calendar years.
Individual Associates may be able to exceed their notional allocations in particular years, within the overall limit on operating hours, provided that this is compensated through under-use by other Associates. Variation from the nominal allocation for any Associate in any year must not exceed 50 hours. The mean hours used by an Associate in any consecutive three year period must approach the nominal allocation. Variation from nominal total special programme hours in any year must not exceed 150 hours. These provisions apply from 1.1.92.