Hello Roman,
Yes maybe i'll build a quick PA tomorrow for LF and will transmit on LF
for 24 hours, each 10 minutes, WSPR-2. I have no idea at all how this
antenna performs on 137 kHz. Is it still a loop or rather a dipole or a
mixture? At least it has about the length of a full size dipole for 137
kHz. I would TX at 10 W RF power only, so that a small accu covers some
hours. But i'm not yet sure if i can find the time to do it tomorrow.
73, Stefan
PS: If the antenna acts as a dipole, then it is beaming to Russia directly.
Am 05.09.2018 21:42, schrieb Roman:
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
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