Hi Paul, http://abelian.org/vlf/event.php?stream=vlf6&id=1269221358 No I think it is odd, the signal is there but at a different sample rate? Computer glitch? Obviously the winamp/oddcast combination
Hi Stefan, A VLF grabber would be very fine! If you can arrange that, it would perhaps be a motivation for the dreamers ;-) Well there are two now (Markus' and Paul's) .. I will try to add a third bu
Thanks for the compilation Paul - very impressive ! Like Horst I am looking for a better location -like yours or Renato'sat least for VLF reception ;-) Cheers, Wolf . P.S. the lead acid battery for t
Hello Stefan, Well, if really necessary one could cool the barrel from inside - not by filling it with water from the pipe of course; and carrying such an amount of distilled water to a portable site
Hi Jim, you asked: For this reason, the filter was added to Yes, that's possible. There are various noiseblankers which can be included in the signal path before the analyser. The most simple one is
Hi Markus and group, Congrats for the nice achievement with such a (relatively) small antenna. I also did some tests with the Alpha signals in the past days but don't know how to interpret them, beca
Greetings all, not LF but VLF again: There's a plentitude of strong whistlers again, at least here in DL, so if you still have your VLF RX equipment running, take a listen. It's not ham radio but Mot
Hello Jay, The whistlers seem to have gone asleep temporarily, but yesterday they returned around European midnight.. There is a short description of the RX setup here: http://www.qsl.net/dl4yhf/vlf_
Hi Nicolas, WX: In Northwestern DL, occational rain. But most of the rain seems to be through by now, and for Stefan's qth (roughly 50 km south of Frankfurt am Main) the rain should be over soon. You
Hi David, Cutoff frequencies are 16 kHz in the analog filter (before the stero FM transmitter, which doesn't like signals close to 19 kHz), and something like 14.7 kHz in the digital filter. Furtherm
Hi Paul, thanks for the prompt reply, and for hosting the VLF radio streams. I have reduced the gain a bit, so the 'Details' page on your website shows a bit less clips/minute here. Most of the remai
Got the slow "K" around 15:00 local on the E-field antenna at home, and fragments from the faster transmission. Then the noise increased, masking the faster transmission. The portable trip with H-fie
Hi Stefan, Paul, and the group; Nice to hear about the progress, and hope to catch some signals here (one fine day) in JO42FD near Bielefeld. Stefan, just one suggestion: A 2 m long 25 cm diameter tu
Hi Paul, Paul Nicholson schrieb: Frequency calibration is only approximate, so 4Hz wide. No amplitude calibration available. Will add Bielefeld when it comes on. Should be online, at least the Oddcas
Greetings all, Just getting ready for a field trip and checked the mail again: Really 8.790 kHz now, or center frequency again at 8.970 kHz as in the last test ? Markus, can you confirm the frequency
Well done, and congrats to everyone involved in the 8.97 kHz test ! The spectral spreading in Stefan's signal looks similar in Todmorden and Nuremberg, maybe the TX has been turned on and off with a
Hi Stefan and group, Looking for a "big" VLF PA ? http://www.thomann.de/de/the_tamp_d3400.htm Ok, 2 * 1800 watts at 4 Ohms or 2 * 2000 watts at 2 Ohms are a bit impractical, but it's a 'virtually und
Hi Stefan, you asked: PS: Could you give me a short feedback if you plan to be RX? Also on receive here; the "Bielefeld VLF audio stream" (VLF6) will be sent to Todmorden as during the last test; so
Hi Daniele, Interested in the SpecLab configuration file :-) Could it be made available via web link or e-mail? Many thanks Daniele A high-res spectrogram configuration is available on DF6NM's VLF gr
The short/long path interference pattern now seems to move slowly down in frequency, best seen around 19730 Hz . The same effect could be seen on Markus' VLF grabber, looking like a 'hook' sometimes.
