Cecil... Best description I've read in 60 years of ham radio.... 73, Joe, KX4JR On 8/30/2013 11:46 AM, chacuff at cableone.net wrote: > Ok, here goes with an analogy... > > > > I’ve been up in the Smokey Mountains many times and they have some of these beautiful short tunnels through rocky hillsides for the roads to pass. >