Thread:DonaldoC1997/@comment-424959-20180304133549/@comment-3004323-20180308161613

I would suggest some old testcards and some startup slides (the authority is named National Broadcasting and Communications Commission).

An example: https://vignette.wikia.nocookie.net/dreamlogos/images/b/bc/Etvks79.png/revision/latest?cb=20170112122235