Quote:
Originally Posted by peter_scott
Further to my search for information about BTL's premises at the Crystal Palace I came across a rather interesting photo showing the South Tower that BTL used for their aerials when testing the experimental 180 line and 240 line transmissions. What do you think is happening in the photo?
The answer is not obvious but none the less interesting.
Peter
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It would appear that the periscope was a German device. There is more about it
here.