![]() The highly accurate 77.5 kHz ( 3 868.289 7806 m wavelength) carrier signal is generated from local atomic clocks that are linked with the German master clocks at the PTB in Braunschweig. The timestamp sent is either in Coordinated Universal Time (UTC)+1 or UTC+2 depending on daylight saving time. In the year 2002, almost 99.95% availability, or just over 4.38 hours of downtime, was realized. When the maladjustment is too large, the transmitter is taken out of service temporarily. This manifests itself in electrical detuning of the antenna resonance circuit and hence a measurable phase modulation of the received signal. Longer lasting transmission service interruptions are generally caused by strong winds, freezing rain or snow-induced T-antenna movement. Most service interruptions are short-term disconnections of under two minutes. With Media Broadcast GmbH, a temporal transmission availability of at least 99.7% per year or under 26.28 hours of annual downtime has been agreed upon. It is operated by Media Broadcast GmbH (previously a subsidiary of Deutsche Telekom AG), on behalf of the PTB. The transmitter generates a nominal power of 50 kW, of which about 30 to 35 kW can be radiated via a T-antenna.ĭCF77 is controlled by the Physikalisch-Technische Bundesanstalt (PTB), Germany's national physics laboratory and transmits in continuous operation (24 hours). In June 1973 date and time information was added. It started service as a standard-frequency station on 1 January 1959. It is solely up to theĮnd user to decide that the information and files offered here are accurate and fit for use with their equipment.DCF77 is a German longwave time signal and standard- frequency radio station. There is no guarantee of the accuracy of any information offered. The data and files offered here are from vintage sources that are no longer published. I stock over 500,000 schematics for hundreds of manufacturers.Įach radio schematic is digitized individually and checked to provide the clearest diagram possible from the original printing. The files offered here are digitized in high resolution from the original factory service documents. Once your order is completed you will receive an email (usually within one to two business days) with a link to download your file. Example: A-60 = A60įor more GE models see the GE Schematics section.įor Canadian General Electric models see the Canadian General Electric section. ![]() ![]() NOTE: Model #s with dashes are same as without dashes. ![]() Some files listed below are available for instant downloadīy clicking on the Instant Download button after the item. General Electric Models/Chassis Available: If your model or chassis is still not listed contact me for availability. If not purchasing an Instant Download it normally takes up to 24 hours to receive the download instructions via email but please allow 1 - 2 business days. Record changer service manuals may be several pages and must be ordered separately. models up to 1964 check the GE Factory Schematics section.įor schematics for General Electric models not listed here see the Basic Schematics section. These service manuals have more information than other service series publications and may be several pages.įor Canadian General Electric Models see the Canadian General Electric section.įor GE Factory schematics only (not service manuals) for U.S. This is the factory service information scanned in high resolution directly from the original GE service publications.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |