Re: LF: VLF in Canada

[jcraig@mun.ca]

Thanks for the suggestion, Roger.  This seems like the
best option until a very long piece of wire is found.

Your VLF web page is an excellent source if info.
Many thanks! 
Joe VO1NA
On Mon, 23 Jun 2014, Roger Lapthorn wrote:

> Joe,
>
> Alternatives are a large TX loop or even a large earth-electrode antenna.
> You'll need some high voltage caps but no large coils to wind.
>
> 73s
> Roger G3XBM
>
>
> On 23 June 2014 20:33, <jcraig@mun.ca> 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