Each radio handset is subject to annual spectrum user fees. Handsets registered individually: 600yen per year per handset. In the case of individually-registered radios, you have the option of paying these spectrum fees in advance for the full period of registration E.g., 600yen x 5 years = 3,000yen one-off payment in first year. Handsets registered under a blanket registration: 450yen per year per handset. No option to pre-pay fees.