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From: Marco Bruno <IK1ODO@spin-it.com>
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Subject: Re: LF: LORAN spurious emission levels
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I found it :-)

 From the manual of the glorious AN/FPN-44A:

"The station output power is 100kW at the standard sampling point. 
The standard sampling point occurs 25 microseconds after the start of 
each pulse. The peak power is approximately 400 kilowatts. The 
average power varies directly with the repetition rate of the pulses. 
Maximum output power averages 7.5 kilowatts; this occurs at a 
repetition rate of 180 pulses per second"

So, the nominal power level was not the peak power, but the useful 
power at the sampling point (2 and half cycles after the start of the 
waveform). May be that other transmitters' specifications vary, of course.

73 - Marco IK1ODO