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AT&T J-Carrier Modulation Plan

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  • Albert LaFrance
    Another interesting contribution from Wayne Weishan: the modulation plan for the J-carrier system, developed in the 1930s to transmit twelve voice channels on
    Message 1 of 1 , Sep 4, 2005
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      Another interesting contribution from Wayne Weishan: the modulation plan for
      the J-carrier system, developed in the 1930s to transmit twelve voice
      channels on two open-wire pairs using analog frequency-division
      multiplexing:
      http://long-lines.net/tech-equip/misc/J-CarrierModulationPlan.html .

      Wayne has provided more material on this topic, to be posted soon.

      Albert
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