Hello Nicolas, Dreamers, Just start with DFCW-600 on 8,79000 kHz. I will modify my DDS-VFO to make a 50mHz shift. So, a dot will be 10 minutes! The last transmission was in QRSS120, so a dash is 6 mi
Hi Paul, My loading coil is also on a water barrel and it works fine and has the necessary stability and not to much mass. Also the ratio between diameter and lenght is optimal and it is the cheepest
Very nice Jim! And now, since you are /p, which background noise level (or SNR of the alpha stns) do you achieve when you go away from the house? Is that a big difference or just some dB? I am happy
Hello George! I was astonished as i saw your callsign there. You are the first station from greece that i saw here on the reflector! :-) I would be glad to do a QSO with you on 137kHz if you are QRV.
Paul, There will be a benefit for you, so if it is done easily, do it! When it can be done easily, why can't you bring up all the L as high as possible? Imagine the E-field lines that come out of the
Dear LF group, Thank you very much for your participation on my todays experiment!! Congrats to all receiving stations! Very well done since my signal was rather weak today:-) There are coming up mor
Hello Jim, LF, Jim, thanks for that informative picture and the effort to make these tests understandable! I am impressed that yesterday your noise level was so low, that the SNR would have been so g
Hi Rik, I think on VLF it could be even useful to place the L as high as possible when there is "nothing" lossy in the near surrounding. I think the difference to LF is, that the coil losses on VLF c
Dear LF, Daniele and others asked for the circuit of my active E field antenna that i am using for my grabber. Now i have created a pdf file where you can find the circuit and a picture of the arrang
Hello Mike, Well, i don't think i am an "DFCW expert" but i often use it ;-) How have you modified your DDS to allow you to transmit DFCW? I have done the same before a few weeks and it works quiete
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
Dear LF, Taking a look on Markus' VLF grabber, it seems, the time window with a minimum QRN becomes smaller in the last weeks(see the picture). Has anyone experience (Paul?) if this is a daily accide
Hi Gary, VLF, LF, The locator is JN49IS. In older mails i have given you the exact coordinates. In google maps you can find the QTH within a sector of some 10m. QRG is 8,97000 kHz. The 4mHz settings
Fine! I think with ON7YD's QRS program you can manage DFCW up to 2400 seconds! May be an alternative... :-) Is Walter now working with 0,5mHz FFT resolution? What is the SNR you achieve @ Walter/DJ2L
Mike, LF, Wow! 5641km is really impressing! Congrats!! Is there such an activity planned for the "west-stations" as well? We could do the same! I've never been slower than DFCW-10 on LF. Would be int
Markus, Congratulation to your first distance above 20km and the first reception by an other ham!! Now you can do tests with DFCW-6000 and 10dB less power and so on. I am sure there will be many inte
Hello Paul, This sounds really improving!! And this will give a much more efficient antenna as before. Also the HV problems will be reduced. Note that the goal should not be to make the C as high as
Hi Wolf, I prefer to build my PAs selfe. This is ham radio, no need for expensive, "ready to use" equipment, especially on LF/VLF. In my point if view, a homemade PA without a noble housing but rathe
Hello Horst, VLF, LF, On my grabber there are some carriers, even with stable frequency. But i do not assume that they are ham generated ;-) Before some days i have done a test transmission of DFCW-6
Markus, let me bet, you are transmitting "NM" in DFCW 4000 in this moment!? :-) Good luck!!!!!! :-) 73, Stefan ________________________________ Von: [email protected] im Auftrag von
