Backscatter from the ionosphere is being used by Cable and Wireless on the Singapore to Hong Kong radio-circuit to give an indication when to change frequencies. So, 55 years ago, started a story in Electronics Weekly’s edition of January 25th 1961. The story continues: A W/T transmitter at Singapore has been modified to transmit pulses ...
Read full article: Backscatter Aids Frequency Change
from Electronics Weekly http://www.electronicsweekly.com/blogs/mannerisms/memory-lane/backscatter-aids-frequency-change-2016-11/
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