Well this goes back many years. Let me just explain. The current bearer of the ZS2I call sign is Johan van Aarde. He is the son of the late Isak van Aarde ZS2I SK. Johan has taken over his late father's call sign. The DIY TVI Filter originated from Isak. I regularly visited Isak when he was still alive. One day as per usual we were sitting in his shack and Isak tried to work a station with 100 watt but this station could barely hear Isak. No problem, Isak turned on "Die Stoof" (1.5K Linear Amplifier). Well needless to say that the station heard Isak a 5/9 into Kleinbrak River. We were having tea and the next minute his phone rang. Isak answered and I was told afterward that it was his neighbor complaining that she cannot play her electric organ as it emits strange sounds and she does not know why. Yep, it was Isak's turn to play the electric organ on behalf of the neighbor. As a good neighbor would do Isak installed this TVI Filter on her TV and also fitted other filters that cured the neighbor's problems. He gave me a copy of the TVI Filter.
I would like to share this filter with others that might experience TVI while operating their station. Just be careful to install such filters today at your neighbors as you might be accused of various problems. It is not like it was in the olden days!! You have been warned!!
(Click on image for larger view.)
