Radio wave reception device, radio wave clock, and repeater

Conversion intermediate frequency signal Sa the low - frequency standard radio wave receiving device, and an wherein the detecting circuit (620) and FILTERING circuit (618), the low - frequency standard radio wave is received is a amplititude-modulated signal. Detecting circuit (620) and FILTERING circuit (618) HAVING generating control signal Sf1 and IF control signal Sf2 according to intermediate frequency signal Sa, and RF control signal Sf1 and IF control signal Sf2 is generated wherein the RF control circuit (611) and IF control circuit (616); the RF control circuit (611) and IF control circuit (616). At the same time, the radio wave receiving device (61) and accelerate the AGC operation.