Reddit mentions of 3.5mm or 1/8" Male to F Type Female Coaxial Adapter (Bose FM Antenna)

Thanks! Will this thing work?

https://www.amazon.com/gp/aw/d/B00BBYRDG8

So, for local access TV while camping, first, you'll need an antenna to pick up TV out of the air. For antennas "digital" is just a marketing word, so don't worry either way about finding one that says digital.

You just need a small TV antenna, like this - this one is small, reasonably cheap, and has good reviews:

https://www.amazon.com/Latest-Amplified-Digital-Antenna-65-80/dp/B07FVLXHYV/

That antenna catches the signal from the air (hopefully there is a signal where you're camping), then it sends the signal down a wire. But, that signal is still digital, which your TV can't display.

So, you have to convert the digital signal to analog. For that, you need a digital signal converter box, like the one I posted earlier. Note these also need an electric plug, they don't work on batteries, so that could be an issue if you're camping. I picked this one "just because" but if you search Amazon for "digital set top converter box" you'll see more:

https://www.amazon.com/iDOO-Converter-Parental-Recording-Required/dp/B079DJKKSF

Lastly, that box will output onto a modern coaxial cable. You'll need this cheap adapter to make that fit the antenna jack on your TV:

https://www.amazon.com/Female-Coaxial-Adapter-FM-Antenna/dp/B00BBYRDG8

Honestly - that's a lot of work and expense for a little TV. And a lot of wires/cables/plugs to mess with when camping.

You might just see if the TV channels you want to watch stream online, and watch them on your phone that way.