Knox Video K128
References
https://worldradiohistory.com/Archive-Broadcast-Engineering/Broadcast-Communication/70s/Broadcast-Communications-1979-02_.pdf#page=44
https://worldradiohistory.com/Archive-Broadcast-Engineering/BME/70s/BME-1979-05.pdf#118
https://worldradiohistory.com/hd2/IDX-Site-Technical/Engineering-Broadcast/Archive-Broadcast-Engineering-IDX/BE/80s/BE-1982-03-OCR-Page-0134.pdf
https://worldradiohistory.com/Archive-Broadcast-Engineering/BE/80s/BE-1981-06.pdf#page=137