 A number of European countries have already allocated the 135.7–137.8 kHz band to amateur radio use based on CEPT / ERC Recommendation 62-01 E ("Use of the band 135.7-137.8 kHz by the Amateur Service", Mainz 1997).The allocation is on a secondary basis with a maximum ERP power of 1 W. Otherwise the band 130–148.5 kHz is allocated on a primary base to the Maritime Mobile Service and the Fixed Service.The main users are naval one-way transmissions and radiolocation systems.