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Re: LF: G4WGT Grabber

To: [email protected]
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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