The info I’ve included below appears to be from 1969 and sounds like it was the scheme to broadcast standard frequency on the TV channels, or to synchronize the broadcasting stations. I have removed the number references scattered in the text because they refer to a drawing that isn’t included with the article. On the slim chance that I’m correct, they probably didn’t make many of these.
http://www.freepatentsonline.com/3594496.html "In the system each television program source is arranged to provide a television signal pertaining to its respective program which includes synchronizing signals derived from a common synchronizing source so that the picture signals provided by each of said sources are transmitted in unison. To this end , each television program source has associated therewith a corresponding synchronizing pulse generator which is arranged to be locked to a common synchronizing source formed by a transmitter providing an alternating-current signal of a predetermined frequency. The transmitter may conveniently be one radiating a frequency standard transmission such for example as that radiated at a frequency of 200 kHz. by the B.B.C. Droitwich transmitter in the U.K. or one of the transmission radiated by the National Bureau of Standards transmitters from station WWV at Bolder, Colorado in the United States. The synchronizing pulse generators may be locked to said common synchronizing source formed by the transmitter by means of a respective radio receiving device which is arranged to receive the frequency standard transmission from the transmitter and provide an output signal having a frequency and phase locked with that of the signal received from the transmitter. Some commercially available receivers which are suitable for this purpose are the type OFS1 manufactured by Advance Electronics Ltd., the types 5090B and 5091A manufactured by Hewlett-Packard Ltd. and for the WWV transmissions the Gertsch model RLF-1 manufactured by The Singer Company and the model GSP manufactured by General Standards Corporation. The master oscillator in each synchronizing pulse generator may be arranged to have its frequency controlled to maintain a predetermined fixed ratio with the output signal provided by its associated receiver as may be required to control the synchronizing pulses of the television transmissions at the frequency required by the desired line standard." -Arthur _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
