Quote:
Originally Posted by DavGoodlin
At least analog was giving us clues if it was multipath OR weak signal screwing with finicky UHF 
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RCA even put out a ghost ruler that you could hold up against the screen to estimate the delay and difference in path length, to take a guess at what object was causing the ghost.
In studying the ghost conditions for digital, we had special receivers that could plot the ghost signals from the equalizer taps. Then you could draw an ellipse on a map representing all locations that would produce that delay. This is how we discovered that the Golden Gate Bridge in San Francisco caused trouble in certain locations that had a simultaneous clear view of it and the transmitter.
