In only a few weeks we will be half way through the VLF season. Is there any interest to try some more experiments? - Extending the T/A distance record further into Europe? - Try lower frequencies -
In only a few weeks we will be half way through the VLF season. Is there any interest to try some more experiments? I'm testing on 8820 for the next few hours unless something fails. Dex
Recording. LWPC prediction for the path assuming 150uW ERP http://abelian.org/vlf/tmp/141130a.gif Looks like stable phase from 22:00 UT to 08:00, a much longer window than we had in June. -- Paul Nic
Maybe something is not working. No sign of W4DEX at Forest, VA, range 254km, checked 17:30 to 19:30 UT. Should be a strong signal at that range. There's a bit of a signal, unstable, varying 3 to 5 mH
Everything here the same as in June except for the oak trees being about 90% bare and a slight bit more inductance needed to go below 9 kHz. Antenna current is 1 amp with a slight bit of wiggle due t
Certainly transmitting - but where is the carrier? Without GPS lock, the HP source should be OCXO stable anyway? I searched at Forest +/- 0.5Hz now maybe I have found you, 0.1Hz low? The frequency lo
Certainly transmitting - but where is the carrier? Without GPS lock, the HP source should be OCXO stable anyway? Yes. I searched at Forest +/- 0.5Hz now maybe I have found you, 0.1Hz low? The frequen
Paul, Markus, Can you point me to the coherent BPSK software? Thank you, Warren K2ORS/WH2XIL On Sun, Nov 30, 2014 at 1:27 AM, Paul Nicholson <[email protected]> wrote: In only a few weeks we wi
Spectrogram of W4DEX at Forest, VA (range 254km) through Mike Smith's receiver which is streamed over the Internet, http://abelian.org/vlf/tmp/141201a.png Appeared close to 8819.9 Hz then after the s
The frequency was unstable, somewhere around 8819.9970 for a while but it also spent some time near 8819.9985. Paul, Sorry for the wandering signal. This morning I found the signal source was not GPS
Hi Warren, Paul, I'm pasting two earlier mails to the group and to Dex, which should give an idea of the transmit setup using Paul's FEC-encoded BPSK. Best 73, Markus (DF6NM) Von: Paul Nicholson <vlf
Glad you found the problem Dex. Will look forward to another test tonight or soon. I'll try to put out my new E-field receiver this evening if I can finish some alterations quickly. It has much lower
