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Re: LF: VLF in Canada

from [Warren Ziegler] [Permanent Link][Original]
To: rsgb_lf_group <[email protected]>
Subject: Re: LF: VLF in Canada
From: Warren Ziegler <[email protected]>
Date: Mon, 23 Jun 2014 20:57:46 -0400
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Joe,
<snip> 10 watts from an 1970's keyboard amp (volume control set on 3) <snip>

         For T/A you will need to turn the volume up to 11 :-) 

73 Warren K2ORS




On Mon, Jun 23, 2014 at 3:33 PM, <[email protected]> wrote:
Dear Group,

I tried again to get an LOA  for VLF.  This time, the response from Industry Canada was favourable: 10 mW 8.0-8.3 kHz.  Yesterday, after a few slight rf burns, and  thanks to PA0RDT's miniwhip design and DL4YHF's Spectrum Lab and advice, VLF sigs on 8.277 kHz were heard at 200m from the 100m wire aerial. This was a reception outside my back yard!  10 watts from an 1970's keyboard amp (volume control set on 3) were stepped up with an xfmr to a lossy 500 ohm tuning coil peaked with a ferrite rod for maximum squeal at L=0.35 H.

Is it possible for someone who is not especially enthralled by winding
a mile of 0.7mm wire to use an iron core to make a VLF tuning coil?

73
Joe VO1NA




--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

 
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