Amateur activity by
DJ8WX
Tue
Jan 28, 2014 2:43 pm (PST) . Posted by:
"Paul"
For several nights DJ8WX (Munsterdorf 53.8958N,9.54167E)
has been transmitting carrier at 8270.004 or 8270.005 Hz,
several hours each night with good phase stability.
http://abelian.org/vlf/fbins.shtml#p=1390942800&b=080&s=sp
Signal is nearly 30dB above noise in 35uHz bandwidth here in
Todmorden (range 762 km).
http://abelian.org/vlf/tmp/dj8wx.140127a.gif
This is a good target for your receivers. It might be
detectable in North America (East coast, or not too far inland)
given first rate reception. LWPC predicts optimum period for
integration (phase stable) is 23:00 to 07:00 UT.
Definitely a GPS timed receiver will be needed to dig this
signal out of the noise. Quite a challenge, an opportunity
not to be missed.
Paul Nicholson
e' da alcuni giorni che monitorizzo la frequenza con SPlab (FFT 424uHz, equivalent noise BW 635uHz, FFT window 2359 secondi) ma senza risultato.
RispondiEliminaDa ieri, grazie all'amico ik1hss ho "agganciato" Spectrumlab alla stazione FTA a 20.900 KHz che qui arriva benissimo .. ho drift intorno allo 0.01 ppm ..
naturalmente non arriva nulla ...
stiamo a vedere nei prossimi giorni ..
MA ADESSO TRASMETTE QUALCUNO ???
73 de Mauro Bernardetto IK1WVQ