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LF: 500KHz QSB

from [Gary - G4WGT] [Permanent Link][Original]
To: "LF -RSGB LF Group" <[email protected]>
Subject: LF: 500KHz QSB
From: "Gary - G4WGT" <[email protected]>
Date: Sun, 28 Dec 2008 15:15:49 -0000
Reply-to: [email protected]
Sender: [email protected]
Thread-index: Aclo/yoKzRf0/3BXQjaWOB5f06PCYQ==

Hi LF,

 

Just made an interesting observation regarding QSB at 508KHz.

 

For my own benefit I have started running a slow SpecLab showing 500 to 510KHz & capturing for evaluation.

 

Occasionally the NDB “Z” shows up. The strange thing is that even though the carrier on 508KHz & the two ID offsets at 509 & 507KHz are relatively close they each display at different depth of fading or an out of phase fade pattern.

 

I am unsure why this should be, any comments please, see capture at link :-

 

http://myweb.tiscali.co.uk/wgtaylor/ZNDB.jpg

 

73,

 

Gary - G4WGT - IO83QP.

 

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