I have NOS 9-71310 Decoder and S60388 Phonevision which connect together. These either came from my dads shop or one of the shops I bought out thru the years.
The Decoder has a multi pin Jones connector which from a search on AK the Zeniths had a Phonevision connector. I dont have any paperwork on these but did get search response on Phonevision. This unit was made in 1965 and according to my searches the Zeniths worked on this pay TV idea till 1968.
Does anyone have any specific information on the units I have?

No specific information, but we do have a page about Phonevision:

http://www.earlytelevision.org/phonevision.html

Thanks . I would like to find the instructions for this unit.
Thanks again
Doug