describe:DCF receiver module with DCF antenna tuned to time signal transmitter DCF77 ( for FRANKFURT 77.5 kHz). The antenna induction signal is sent to the IC for amplification, demodulation, and then identified by the MCU, so that the date and time of the timing center can be completely consistent.Below you will find important setup and circuit diagrams.Technical SpecificationsDCF---77.5KHZ single frequency specification:Product number: DCF-1060N-03ARCCM category: DCF/77.5KHz single frequency modulePCB size: 25.0x11.5x1.0mm/FR4Antenna size: AR10x60mm/High QNominal frequency: 77.5KHz±300HzSensitivity: 27±2dBReceiving IC: CME6005JJY-40/60KHZ dual frequency specificationProduct number: JJY-1060N-MASRCCM category: JJY/40+60KHz dual frequency modulePCB size: 22.0x13.5x1.0mm/FR4Antenna size: AR10x60mm/High QNominal frequency: 40/60KHz±300HzSensitivity: 40/60K:30/28±2dBReceiving IC: MAS6181B Operating voltage: 1.1...3.3 V Current consumption: 85 µA max Receiving frequency: 77.5 KHz Board size (without antenna) LxWxH: 22x13.5x1 mm Antenna quality: LxØ: 60x10mm Scope of delivery: 1 piece ⇒ DCF receiver module with antenna connect: ⇒ Ground = Pin G ⇒ Operating Voltage = Pin V ⇒ data = pin T ⇒ Power On/Off = Pin P1⇒ 40/60K frequency selection = SEL ⇒AGC(Note 4: Optional Control for AGC On/Hold AON control pin has internal pull up which turns AGC circuit on all the time if AON pin is left unconnected. Optionally AON control can be used to hold and release AGC circuit. Stepper motor drive of analog clock or watch can produce disturbing amount of noise which can shift the input gain to non optimal level. This can be avoided by controlling AGC hold (AON=VSS) during stepper motor drive periods and releasing AGC (AON=VDD) when motors are not driven. The AGC should be in hold only during disturbances and kept on other time released since due to leakage the AGC can still change slowly when in hold.) Important