ALANO DCF77 77kHz NIST Radio Controlled Clock Modules, 30dB High Gain Atomic Clock Receiver Module, 100mm Antenna 1.2 to 5V Operating Voltage for Radio/Radio Alarm Clock/Timer

This module only receives RCC signal. The decoding and processing of time signal and the driving of display screen need additional MCU processing.

FEATURES:
Very high sensitivity
The power is controllable
Low power consumption
Operating supply voltage range: 1.2V to 5.0V
Working current 70uA-90uA

SPECIFICATION: DCF 77 KHZ
Sensitivity: 30 dBuV
Antenna size: 3X8X50mm

Application Notes:
A. Antennas need to be placed horizontally
B. Antennas should not be close to metal and AC voltage-varying lines
C. The antenna is at least 60 mm away from the MCU, and the MCU can't have a large current variation to avoid its own line interference
D, Stable working voltage, ripple less than or equal to 10mV (adding filter capacitor)