Hi Stefan, LF, I will be monitoring your frequency using a M0BMU type 30 turn 0.8M square loop and 9kHz pre-amp into my PC sound card, software is SpecLab running Marcus's "9kHz_4mHz" configuration.
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
I've attached the spectrum around 8969.9 Hz grabbed for 6 hours. You can just see the dash there. The QTH here is Warsaw, KO02MD. ODX 902km! The whole picture from the grabber is avaliable here: http
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
Dear group, After a break of one week i plan to transmit again on VLF / 8,97 kHz. If the wind will be enough i will come up on saturday, 3. April, at arround 10 UTC. The DFCW-600 mode was a good choi
Hi Daniele, If you look at Marcus's 9kHz grabber & go to the bottom of the page you can download the configurations from there, three were available when I last looked. http://www.mydarc.de/df6nm/vlf
Dear Stefan, LF Group, Looking at screen captures from my portable RX yesterday, your signal is hardly visible The first dash was obscured by a burst of 50Hz noise, the subsequent shorter dot is not
Dear Stefan, LF Group, ...> 0 dB above average is clipped, does this mean, that each sample that is above 0 dB is just left away out of the whole integration that gives one pixel in the spectrogram?
Looking for a "big" VLF PA ? well, I have a Velleman VPA2600 amplifier - 2x 600 W at 8 ohm, 2x 900W in 4 ohm, may be paralleled or bridged. It's defective (broken final transistors, I presume), but c
Hi Stefan & list, As I couldn't start any earlier today I merely caught your final "dot" - see screenshot. Good luck with further experiments and hopefully weather will be on your side the next time
Dear Jim, Stefan and the group, Jim asked: I imagine Spectrum Lab must be doing the clipping in the time domain, i.e. limiting the maximum amplitude of any particular sample that is above the average
