<http://long-lines.net/places-routes/index.html> <http://long-lines.net/places-routes/index.html>http://long-lines.net/index.html So much great information. Did you know the horn antennas of 1955 had a 6GHz gain of 43dBi and were tri-banders? (4+6+11GHz) To get an accurate radiation pattern measurement the engineers of yesteryear utilized a pulse measurement technique, which lets you avoid reflections in your readings! http://long-lines.net/tech-equip/radio/BLR1155/403.html How about browsing a nice microwave map of Washington: http://long-lines.net/places-routes/maps/WA76.html Looks like AT&T made many of the same site choices the current HamWAN map has, but decades earlier. I am in awe of what old timey engineers managed to pull off before I was even born. And it wasn't just phone calls, they moved television over that network! --Bart