One late night many decades ago, I chanced upon a technical description of the Touch-Tone system. The book I was reading had an explanation of how each key on a telephone sends a combination of ...

NEC popularized the multifrequency monitor with its Multisync line starting in the mid-1980s. See Multisync monitor. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires ...

Publications of the Astronomical Society of the Pacific Vol. 123, No. 910, December 2011 Single-Dish Performance of KVN 21 m Radi... ABSTRACT.We report simultaneous multifrequency observing ...