Microwave facilities with built-in reliability

THIS PAPER describes a short-haul microwave radio system now providing toll quality telephone message service between San Diego (elevation 320 feet), Calif., and the Laguna Mountain recreation area (elevation 6100 feet), Calif. The microwave portion of the system employs Motorola frequency diversity equipment operating in the 5,925 to 6,425 mc (megacycle) common carrier allocation. The microwave system is presently multiplexed with 28 channels of Lenkurt 45 BX carrier telephone channelizing equipment.