https://stream.echo6.co/videos/watch/12ad8dba-699c-4793-b8d6-99ed350031b3 Dave looks through the documentation for the vintage 1980 NEC PCN-1205AH 5kW Analog TV Transmitter that used to transmit the CH7 TV frequency in Sydney He then tears down the HPA-3696 IF Modulator used in the system. Facility tour: http://www.youtube.com/watch?v=mR_wJkxKSXU Forum: http://www.eevblog.com/forum/blog/eevblog-574-nec-analog-tv-if-modulator-teardown/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ Sat, 13 Jun 2026 14:00:17 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/12ad8dba-699c-4793-b8d6-99ed350031b3 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.