Hi Stefan, Observing the Loran-C forest I accidentally received what looks like "dk7fc" calling "cq". Time: around 14:57 utc Frequency: approx. 137.71 kHz Antenna: small patch + BF981 Software: Baudl
Hi Jim, You wrote: ... I would be interested to know what method you used to determine SNR for the different rod configurations. ... Simply by going the broadband way and using a very low noise, very
Hi Daniele, Very accurate measurements had shown that Litz-Wire is better especially down at low frequencies <1 MHz. Especially MRI-builders reported positive effects. Myself I never could find a con
Hi Stefan, Thank you for sharing! You wrote: ... The RX has a 50 Ohm input and uses a SBL-3 DBM. The circuit just uses a single BF862 amplification stage (about 20 dB gain), the rest is passive. LO f
Hi Victor, You wrote: try a BFP640,rBB 1ohm.Noise as low as 300pV/sqrt(Hz) is possible.Very cheap,but one drawback,Ft is about 40GHz,not easy to get stable.For topband I use BD139 (yes a lf driver),r
Hi Stefan, A senile brain here remembers my first subscription in late summer 1998. And the first "dx by accident" in Nov. 1998: http://www.df3lp.de/misc/lplplp.gif (Johan?) Peter, df3lp
Hi Stefan, You wrote: ... Now i'm back on 136.172 kHz and will transmit all the time until early morning in DFCW-90 on 136.172 kHz. ... Clearly visible here at Kiel, ~32 dB below HGA22. I'm not sure
Hi Halldor, You asked: Who is testing? ... Confirming that 3 staircases. Well known since some years. See our discussions and bearing trials there: http://tech.groups.yahoo.com/group/VLF_Group/msearc
Hi Roger, ... By the way, do we know exactly WHAT Paul Nicolson does to detect such weak signals so well? Has anyone heard/read technical details of his super-sensitive and well engineered receiving
Hi Alan, Even "zipped" it's >20mb. But that's no problem. I can send you a link for downloading. I suppose you are running M$-Windows, so I will add "CRs" to the end of each line. Some programs canno
Hi, May be this could be of interest to those involved in propagation effects at 2200m of wavelength. I'm observing hga22 ("space"-frequency) since May 2010. Bearing from here is ~SE, distance ~1001
Hi Mal, Hm, no temporal orientation here. Should be "2011-12-20"... Yes, observed JJY at 40 kHz this afternoon. Unfortunately JJY at 60 kHz is covered by that huge signal from Anthorn. Best xmax whis
Hi Lubos & Victor, Thanks fer confirmations! Reception of JJY is a real challenge here at Europe. Lucky guys who could receive it regularly. I wrote a reception notice to NTSC at the Chinese Academy
Hi Mike, So I am still looking for a way to grab screen shots from several grabbers at once, and with file types including PNG and GIF. Any other suggestions? ... Use "wget": http://gnuwin32.sourcefo