Content for DCF77

DCF77

DCF77 is a German longwave time signal and standard-frequency radio station. It started service as a standard-frequency station on 1 January 1959. In June 1973 date and time information was added. Its primary and backup transmitter are located at 50°0′56″N 9°00′39″E in Mainflingen, about 25 km south-east of Frankfurt am Main, Germany. The transmitter generates a nominal power of 50 kW, of which about 30 to 35 kW can be radiated via a T-antenna.

Description Source

Project  Talking clock

Talking clock

“Retro clock with seven segment display, WDC65C02 microprocessor and SP0256 voice synthesis chip. Few years ago I began my experiments with retro microprocessors. Their eventual result was a design of board consisting WDC65C02 CPU, EPROM, static RAM chip and couple …

Project  Pico Railway Clock

Pico Railway Clock

“Reinvigorating a handsome old clock and making it super-accurate, without any internet. Uses a Raspberry Pi Pico, a radio antenna and a couple of components to emulate a signal from a Mother clock. The DCF77 signal is a radio signal …

Project  Putting an old digital clock (with an outdoor thermometer) on steroids

Putting an old digital clock (with an outdoor thermometer) on steroids

“According to the label on the back, it is a rebranded “Electronics Tomorrow LTD.” model no. 7904. It supports DCF77 time synchronization and has been working reliably for the past 20 years. But recently I wasn’t so thrilled with …

Project  “Connect” to an atomic clock in space! GPS, DCF77

“Connect” to an atomic clock in space! GPS, DCF77

“This project is a clock with radio receivers which can receive the exact time from the GPS satellites or from the DCF77 transmitter. This project is a clock with radio receivers which can receive the exact date and time from …