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Z code
Z-Signals Are Completely Different from the Old Cable & Wireless Codes
Documents of the CCIR (Los Angeles, 1959)
W3PGA Pearl Harbor Special Event
Operating Signals
History of Telegraphy World in the Eighteenth and Early Nineteenth Centuries [1]
Digital Symbols
Operating Signals
Q – Signals March, 2011
MAGNIFICAT ' -Is~Blishedquarterly to -, ". ''' Provide In·T:Ernational In-Depth Coverage- of ·All '
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The Art & Skill of Radio-Telegraph (3Rd Edition)
The Art and Skill of Radio-Telegraphy
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