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LF: VLF - vertical probe measurements

To: LF Group <[email protected]>
Subject: LF: VLF - vertical probe measurements
From: Chris Osborn <[email protected]>
Date: Fri, 15 Apr 2011 13:40:26 +0100 (BST)
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LF,
 
Acting on advice I have installed a whip aerial (probe) on top of a mast at the boundary of my property.
This is in order to monitor my VLF transmissions and to provide a reference level for any system improvements.
 
I noticed that the probe's pick-up voltage is directly proportional to my PA's supply current.
Assuming that the PA efficiency doesn't change drastically with current then would I be correct in assuming that the probe's voltage is directly proportional to the radiated power?
 
I was expecting a square law relationship . .
 
73
Chris G3XIZ
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