Tom Paris's vintage replica TV set becomes something of a gag in the later seasons of "Voyager," but it features prominently (and somewhat darkly) in "Memorial," where we get to see a closeup of the remote. It is from a Zenith 600 TV (@pielock373 is our resident vintage TV expert), and the weird thing about it is that it has a yellow button on it.
I have had a search going for over a year for this remote on eBay, and you can find remotes that match the correct form and graphics or you can find them with a yellow button, but never both together in one remote.
So I decided to get each of them and create a chimera. In the process, I learned some interesting things about this ancient technology. Apparently, early TV remotes used a tonal chime system (with presuably some kind of acoustic detector on the TV side) and were completely un-powered on the remote system. It was just a spring-loaded mechanism that struck a metal rod with each button press. The different rod lengths create different tones. I now understand why my grandmother used to refer to TV remotes as "clickers," long after they stopped having this mechanical click.