Do you recall what the partially filled in circle for Boulder City indicates?

Where is Mc Carran???

Where did ya find that chart.. what type is it? I have never seen markings like that on a VFR Sectional.. I'm pretty green though too. I'd be curious to know myself.

Kinda paved?

McCarran was still somebodies dream when that chart was made. I'd guess around early 50's? Am I close?

I'm showing my age. The chart shows the pre Omni, four course radio range. which began in the late 20's and was replaced in the early 60's. So I would say speedbump is real close.

Four towers set in a square transmitted the letters A and N in Morse code. A pilot flying along one of the four beams toward the square would hear only an A or N in the dashes and dots of the code. The dashes and dots grew louder or more faint as he flew, depending if he was flying toward or away from one of the corners. Turning right or left, he would soon hear a different letter being transmitted, telling him which quadrant he had entered.

The beams flared out, so that at certain points they overlapped. Where the A or N signals overlapped, the Morse code dashes and dots sounded a steady hum, painting an audio roadway for the pilot. When possible, radio-range stations were located near an airport, and situated so that one of the four beams lined up with the principal runway. WAG, the segmented airport symbol represented a segment of the range the range the airport was in. I was the kid on the airport fence when this was the norm so I never flew with this system.

Gene

Chart is 1945 AAF Mt. Whitney. 363

Geneswan:
Very good....Very good.... Except the shaded part of the Boulder City airport indicate the runway length. 5500-6500 feet. They moved the airport but as I recall the old site is still visible.

Alamo is near the current Mc Carran location.

Henderson is down near Sloan at the dog leg in the railroad. Sloan mine is a current waypoint.

The Las Vegas airport is shown as military and is probably Nellis.

The airway shown on the 208 leg of the Las Vegas range is Amber 2 and goes to Enterprise range near Cedar City.

Did you ever see a VAR range. That was two legs of an audio A/N range and two legs, Yellow / Blue that the pilot followed by an indicator on the panel. He would know his location (sort of) by YELLOW - A etc.

O.K. I know I know don't ever do this again...

I thought this was a pretty interesting thread...thanks for the ancient brainteaser, Rat.