Narrow-Bandwidth Television Association

Here are some of the artikels that I have found in al those years when I was a radio-amateur, those artikels made me go to the Mechanical Television world for almost 17 years now.
Feel free to copy.

Hartelijk bedankt, erg interessant en voor mij nog nieuw!
It would be interesting to write a short summary for the not Dutch speaking members, I think the Dutch NBTV tradition on 80 meters is really remarkable in history. The system was Baird compatible, and I think the only more or less regulary transmissions in 30 lines worldwide after the BBC stopped the 30 line TV service.

Hi, I see the name of Ruud Christoffer.
Is Ruud the same person who lived in the J.E. Straat in Amsterdam in the sixties?