If it has mono sound, use two of these and connect your sources. Official name is RCA female to TS 1/8" male.
https://www.amazon.com/Ancable-4-Pack-Adapter-Connector-Coupler/dp/B077XVJKNS/
The source must be composite video (CVBS) and analog audio.
If it has stereo sound, get an "RCA to 3.5mm Y-cable" (RCA stereo female to TRS 1/8" male).
For HDMI just use an HDMI to AV downscaler. Don't get this plain cable because the signal types will be completely wrong.
For the antenna port I don't know what it's called, but it's a 3.5mm to 300 ohm screw adapter (looks like this). From there you can connect a separate wire antenna or convert it using a 75 to 300 ohm adapter.