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Combined display of all available logs of HFUnderground. You can narrow down the view by selecting a log type, the user name (case-sensitive), or the affected page (also case-sensitive).- 04:21, 24 January 2015 Token (Talk | contribs) uploaded "File:CODAR pulses.jpg" (Amplitude / time image showing a few pulses of a 4 MHz CODAR. In this case the pulse is about 950 microseconds wide, with a 1900 microsecond pulse repetition interval, giving the fairly typical (for CODAR) 50% duty cycle.)
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