[aprssig] GPS Signals in a Tunnel?

[Ralph Milnes]

I'm curious -- while driving through the Lincoln Tunnel (New York City) the
other day, my GPS seemed to be accurately tracking where I was in the
tunnel. 

Was it really getting some GPS signals? How?

I'm pretty sure my 2m APRS beacon didn't make it out of the tunnel, however.
:-)


Ralph KC2RLM