Re: ULF: First far field detection at 1570 Hz

[Roman <rw3adb@YANDEX.ru>]

Congrts, Stefan!

We are follow by your success!
Listen, do you planning to operate 136 kHz, I hear, tell me pse - do you 
planing try to TX with that ant on 477 kHz and 160M?
I will be interestin to hear about results.

73!
Roman


> ULF,
> 
> Last sunday i finally managed to detect a carrier transmission on the
> 191 km band in the far field. In fact the distance is higher than 1/4
> wavelength. A new lowest frequency of a signal generated by amateurs,
> detected in the far field.
> 
> At 250 W RF power i transmitted for 2 hours (starting 08:08 UTC) on my
> 900m long ground loop antenna. It seems to be a very hard band with poor
> propagation. Furthermore my RX antenna becomes deaf below 2 kHz. So the
> S/N is much lower as expected when comparing to the results at 1970 Hz.
> Two spectrograms are arrached, showing the short trace in 424 uHz and
> 212 uHz.
> 
> Before finally entering the far field in the frequency range below 1 kHz
> it may be necessary to build up an E field RX at the RX QTH. I first
> step for that was done yesterday.
> 
> To be continued...
> 
> 73, Stefan
-- 
73!
Roman, RW3ADB