Favorite obsolete formats.....


What are your favorite of these? I’m unsure if any stations broadcast in AM stereo nowadays. 8 track, Mini-disk, Cassette, VHS, CED, Beta, DAT, Reel to Reel, Am Stereo, Laserdisc, Quadraphonic, Dolby FM. Surely many formats have been overlooked.
128x128wturkey
I forget the name. Tin cans and string. That one. 

No, wait! Smoke signals! Man I miss that one. Remember, the indians with the blanket? You just knew the settlers were in trouble.

Oh! Oh! Never mind- beacons! Yeah!
https://youtu.be/QhRFaY8A9cA?t=48