| http://www.w3.org/ns/prov#value | - Mixing, modulating, multiplexing and filtering data at required frequency bands is achieved by simple state of the art equipment as described for example by an article published in the Digest of Technical Papers of the 1973 IEEE International Microwave Symposium at Boulder, Colo., June 4 to 6, 1973 entitled A Low-Loss, Wideband Transmitter Multiplexer by J. I. Smith and R. E. Fisher of Bell Labo
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