Hello Stefan, I just posted your message on the 472kHz.org news page. I hope someone will manage to reach them, and indeed VK4YB might be in pole position at a distance of "only" 9000km. 73, Rik ON7Y
​Hello Stefan, It shouldn't be too difficult to produce several 100W RF (or more) with a decent sideband surpression. Just a mather of a proper voltage regulation and enough C's in the PSU. The
Hello Felix, first of all a big thank you for setting up a 630 m WSPR RX station in Antartica. At this moment there are very few stations active on 630 m in the southern hemispere, I think your "best
All, some interesting comments by W5EST, on the possibility of reaching DP0GVN on 630 m, have been published on KB5NJD's daily reports page. Part 1: http://njdtechnologies.net/030818/ and scroll down
Hello Luis, there is no need for class B when using DFCW. As it is a kind of FSK it can be used in class C (or D or E). 73, Rik ON7YD - OR7T Hi Chris, LF Oscar answered the question. I'll try to tran
Hi Paul, to my knowledge snow and ice act as a very lossy capacitor for AC signals above some kHz. Losses decrease with temperature, so the worst thing is snow and ice at temperatures just below 0°C.
Keep in mind that you only need a pre amp if the "antenna noise" is below the receiver noise. Most receivers have reduced sensitivity at LF / MF, but the noiselevels at these frequencies is high comp
Hello Paul, just found this: https://pdfs.semanticscholar.org/b9bd/c3ce15dd09a2bc59d410ad1d36d9c2bc7246.pdf 73, Rik ON7YD - OR7T Hi Rik, That makes sense and my observations seem to be consistent wit
Hi Stefan, Paul, the WSJT-X version 1.0 users guide mentions JT9-1, JT9-2, JT9-5, JT9-10 and JT9-30 (see http://physics.princeton.edu/pulsar/K1JT/WSJT-X_Users_Guide.pdf). The oldest WSJT-X version I
Hello Andy, do you mean something like this: http://www.wireless.org.uk/dk5pt-f.htm​ ? 73, Rik ON7YD - OR7T Van: [email protected] <[email protected]> namens Andy Ta
Hello Paul, all, Installed OK under Win8. The first I tried I also ran into some error, but just because I clicked the buttons that "seemed right" (the button at the bottom of the pop-up messages) wi
Chris, Paul, all, in the attached picture the buttons I pressed to install EbLaunch (with success) on Windows 8 (64 bit). 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb
Hello Chris, just a warning: the COM port outputs tend to be unstable (some consecutive high/low sequences) during booting. Taking the high inrush current into account: the PSU (or mains fuse) may di
Hi Paul, about testing without drain voltage: Be aware that the input (gate) capacitance will be a lot larger at 0V Uds. This might affect the waveform at the gate! 73, Rik ON7YD - OR7T Chris, I thin
Hello Paul, I was on holiday last week and didn't pay much attention to what passed in the reflector. So my appoligies if I tell things that have been told earlier. The "both sides conducting" issue
Dear all, On Roger's (VK4YB) suggestion I added a distance record list at the 472kHz.org website, see http://www.472khz.org/pages/on-the-air/distance-records.php. The list is as wel for world wide re
​​Hello Stefan, the idea is to list the best DX for the different modes (CW, QRSS/DFCW, digi), worldwide and for each continent. Similar to what exists for VHF and UHF bands (eg https://p
Hi Stefan, I agree about a top 10 or top 20. But to avoid "endless" lists I tend to keep the distance record list as it is (only the best distance) and have seperate top 10/20 lists, linked from the
Hi Luis, Oscar, all, it is indeed the right time of the year for a LU-EU grayline path. @ Oscar: Any chance for you to transmit in QRSS10 between 20 and 23 UTC one of these days? If it announced on t
​Hello Oscar, all, I just checked the overnight screenshots: only a faint but clearly interrupted trace just above 475 kHz that appeared around 21 UTC and vanished around 02 UTC with a peak at
