Step one is converting the HDMI signal to composite. You need something like this:
https://www.amazon.com/Composite-Con...d-f486577edf4d
Step two is converting composite to channel 3 or 4. You need an RF modulator or a VCR for this. This would work:
https://www.amazon.com/RCA-Compact-R...dDbGljaz10cnVl
Connect it to your TV, tune in the correct channel and you should be all set.