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| Subject: | Re: LF: G4WGT Grabber |
| From: | Andy Talbot <[email protected]> |
| Date: | Wed, 8 Jul 2009 18:30:47 +0100 |
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They are lmeasured in different ways. The noise measurement (black trace) is measured over the complete preceding 1 nminute period so approximates a good average. The signals, however, are measured only in the five second interval from :25 to :30 wher ethe beacon transmit full carrier. More info can be found on the RSGB 5MHz Working Group website as this beacon uses teh same format as those in its Tx pattern, although the pulsed sounder has been replaced with a PSK31 transmission on mine. Andy www.g4jnt.com 2009/7/8 Richard Newstead <[email protected]>: > Gary - G4WGT wrote: >> >> Andy, LF, >> >> Thank you Andy, I was about to place an answer to David's query, his >> question has prompted me to add a little more info on the grabber page. >> >> Thanks to you both. >> >> Gary - G4WGT. >> >> >> > > Gary > > Why don't the blue and green traces follow the noise? > > 73 > > Richard > G3CWI > > > |
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