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Date: Mon, 19 Jul 2010 11:47:58 -0500
From: Mike-WE0H <we0h@gmx.com>
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Subject: LF: Re: Progress with earth electrode tests on 136kHz: 4.6kms with 250mW
 from 	PA.
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250mw is radiating that well, crank it up to a hundred or so watts and I 
am thinking it might make it to Mal's QTH...

Mike-WE0H



Roger L wrote:
> Today I tried some more experiments with my 20m spaced earth electrode 
> "antenna" and small beacon TX on 136.93kHz (I think this is a more 
> accurate frequency). I switched over to QRSS3 and took the (deaf on 
> 136kHz) FT817, E-field probe and PC out for a ride in the car to see 
> where copy stopped. Firstly, I stopped in a National Trust car park 
> 1.5km from home - solid copy on QRSS3 when holding the E-field probe box 
> as high as possible above the car roof. Then I drove on to a spot 
> *4.6km* from home (Swaffham Bulbeck) and copy was again achieved, albeit 
> not as strongly. I was prevented from doing further tests as the coax 
> inner from the E-field probe to the FT817 came apart, so I had to return 
> home.
> 
> So, I'm certainly getting a signal radiated beyond the near field. I've 
> no other LF-HF antennas up (just the VHF/UHF vertical which was 
> disconnected), so there is no coupling into other antennas.  In the 
> coming days I'd like to see the directionality of the "antenna" by 
> looking for signal levels with the QRSS3 beacon at all compass points 
> some 4-5kms away from the QTH.
> 
> In the meantime, if anyone near Burwell, Cambs wants to look for the 
> QRSS3 signal near 136.93kHz I'll leave it running until about 8pm 
> tonight when I have to switch off as my grandson is sleeping in the 
> shack bedroom. Any reports would be amazing.
> 
> 73s
> Roger G3XBM
> 
> 
> -- 
> http://g3xbm-qrp.blogspot.com/
> http://www.g3xbm.co.uk
> http://www.youtube.com/user/g3xbm
> G3XBM    GQRP 1678      ISWL G11088