TD-2
... that Bell Labs' TD-2 microwave-relay system was used to carry television signals and telephone calls across North America?
... that <a href="./Bell_Labs" id="mwA8U" rel="mw:WikiLink" title="Bell Labs">Bell Labs</a>' <b id="mwA8Y"><a href="./TD-2" id="mwA8c" rel="mw:WikiLink" title="TD-2"><span about="#mwt49" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"TD-2"}},"i":0}}]}' id="mwA8g" typeof="mw:Transclusion">TD-2</span></a></b> <a href="./Microwave_transmission" id="mwA8k" rel="mw:WikiLink" title="Microwave transmission">microwave-relay</a> system <i id="mwA8o">(tower pictured)</i> was used to carry television signals and telephone calls across North America?