[amsat-bb] Re: LF Satellite ideas?

[Charles Suprin]

Has anyone considered the possibility of applying for an experimental
license for such an experiment?
AA1VS


On Sat, Dec 11, 2010 at 9:13 PM, John Magliacane <kd2bd at yahoo.com> wrote:
> --- On Sat, 12/11/10, Bob Bruninga <bruninga at usna.edu> wrote:
>
>> Is 137 KHz possible from space?
>
> Bob,
>
> My understanding is that LF and VLF emissions of terrestrial origin don't get beyond the 'D' layer, even at night.  In fact, the 'D' layer acts as a reflector, rather than an attenuator at these frequencies.  Cosmic background radiation maintains sufficient 'D' layer ionization at night.
>
> However, your post reminded me of project INSPIRE, which was a plan to transmit VLF signals from the Space Shuttle back in 1992 using a pulsed electron gun in the payload bay.  Details on project INSPIRE can be found here:
>
>          http://theinspireproject.org/index.php?page=faq
>
> I'm not sure how this would penetrate the ionosphere except through brute force.
>
> Nevertheless, compatible receivers are simple to build and readily available.
>
>
> 73, de John, KD2BD
>
> --
> Visit John on the Web at:
>
>        http://kd2bd.ham.org/
>
>
>
>
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