4 ms·
Tunnels near me just say "Turn on your radio" and blast the whole FM spectrum at least (might try it with AM too!). Guess you can do this in a tunnel!
by quickthrower2 4y ago
Tunnels near me just say "Turn on your radio" and blast the whole FM spectrum at least (might try it with AM too!). Guess you can do this in a tunnel!
- RF_Enthusiast 4y agoFun fact! In the US, a Tunnel Radio System may operate in any mode on any frequency provided the signal does not leak from the tunnel[1]. [1] 47 CFR 15.211 <https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A/part-15/subpart-C/section-15.211#p-15.211(a) https://www.ecfr.gov/current/title-47/chapter-I/subchapter-A...>