Abstract: An automatic frequency controller synchronizes a received carrier signal with a simulated carrier signal to automatically control a center frequency of the simulated carrier signal. The received carrier signal has a first synchronous code pattern inserted into a plurality of frame periods and a second synchronous code pattern inserted into a plurality of multiframe periods. The phase of the received carrier signal is determined by sweeping the center frequency of the simulated carrier signal and mixing the simulated carrier signal with the received carrier signal. The sweep of the center frequency of the simulated carrier signal is reduced when frame synchronization is detected and the sweep of the center frequency is fixed when multiframe synchronization is detected.

Abstract: Apparatus useful for the continuous manufacture of metal foil or printed circuit patterns includes a cathode supported over a plating tank with its flat bottom surface disposed horizontally. A continuous strip of basis metal to be plated is fed horizontally over the tank from reel to reel while being held in sliding contact with the bottom surface of the cathode by suction. Within the plating tank a pair of insoluble anodes having a block of electrically insulating material sandwiched therebetween are mounted opposite to the cathode, with a spacing between each anode and the basis metal traveling under the cathode. The insulating block has an upwardly opening groove formed transversely therein, and from this groove the electrolyte solution within the tank is caused to flow turbulently through the spaces between the anodes and the basis metal traveling under the cathode in order to speed the electrodeposition, as of copper, on the downward-facing surface of the basis metal.