On a point of information, the aim with underground communications is to
achieve a speech link over several hundred metres or more. The best I know of
on 87 kHz is 1.6km two-way and 2.5km one-way in Vercors limestone.
John F5VLF
On 19 Jul 2010, at 00:04CEST, Mike-WE0H wrote:
> It's better to have an antenna no matter what shape or form it is rather than
> NOT having any antenna. We wont learn a thing if everyone would just use
> traditional antennas and never experiment with other types of antennas. This
> is what Amateur Radio is all about, Experimenting and trying new stuff.
>
> If we all wanted to communicate nearly error free with zero QRM, we'd just
> email each other and call it a day.
>
> Real Amateur Radio is experimenting. Keep up the good work guys. It is very
> interesting reading about your success and failures. Some people will like
> what you do and some will think your nuts. It doesn't matter one bit who says
> what. Have fun and enjoy what you do.
>
> Mike-WE0H
>
>
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