On Sat, 6 Mar 2010, Markus Vester wrote:
> on two evenings this week, I have transmitted an 8.97 kHz signal from my
> LF Marconi at home, and attempted to receive it at various locations.
> The experiment was very similar to the one in April 2003, but with a
> moderate improvement in ERP and FFT bandwidth. Now on both occasions,
> the carrier could be detected at a distance of 12.1 km:
> http://www.mydarc.de/df6nm/vlf/vlf_12km.jpg
Congradulations, Markus! 12km is well out of near reactive zone. Thus
further dictance increasing is not too dificult:-)
> Radiated power was thus approximately 1.3 uW (EMRP).
> this would imply a noise level on the order of 16 dBuV/m/sqrtHz.
This corresponds well with previous mesurements.
Regards,
Alexander/RA9MB
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