my radio goes out the second i go under lol

 

I'm the exact same way. I don't lose reception on the way to norfolk until about 50 yards before the exit.

 

hmmmmmmmmmmmmm.............

 

i dont loose reception in any of them

 

same

 

I listed to XM only so yes it goes dead w/o the satellite signal.

 

Someone clearly hasn't taken Physics. You do in fact lose signal in a tunnel and also in elevators depending what the elevator is made out of. According to my physics teacher, he said that going though an tunnel that goes under water shouldn't be a problem because the salt in the water is a good conductor. I wouldn't know cause I don't listen to the radio.

 

Yes saltwater is a good conductor, but if I saw saltwater in a tunnel I would shit myself. Tell your physics teacher he is wrong and right.

 

Yes, but you also need to keep in mind the material that the tunnel is made out of. The material does not allow RF signals to pass through well, or at least between 87 - 107MHz. This is why they use a repeater inside the tunnel. To repeat the FM signals from outside, to inside the tunnel, so you can hear the radio.

Apparently one of their repeaters is broken.

 

Salt water is a good conductor of electricity. I do not think any water is a conductor for radio waves. Radio waves move through the air. I have never thought about if they move through water. Water molecules are different than metal, because it is liquid. I guess they probably do, because I would imagine that a submarie gets CB radio signlas under water. Salt water is however a poor conductor for radio waves.

I do loose radio signal shortly after I enter the tunnel. I have cell phone reception all the way through from Hampton to norfolk, but on the way back, I always drop my call about 50ft as I enter, but then I have signal the whole way through.

Did you know that the reason you do not get cell phone signal in certain buildlings, like walmart and other large buildings is because of all the metal in the buildings? The metal in the buildings, it acts as a electronic shield... The metal cage effectively creats a Faraday cage around you, not allowing the cell phone signal to get in. That is why you loose signal in some areas of walmart, or elevators and things like that. Too much metal. The more metal, the more the shielding.