. . . and here's the evidence. Attached is a screenshot of Andy's excellent signal during our two-way QRSS10 QSO. de Mike, G3XDV The following section of this message contains a file attachment prepa
Here is a composite picture of my screen grabs between 0100 and 0815 (time bars are 15 mins apart). It's very wide so will need to be saved and zoomed. Excellent signal from WH2XIL. XEB also good and
Chris. You are 599 here of course. As for activity, I think CW is much harder now because the noise floor in Europe from DCF and HGA is much greater than ten years ago. Plus local TVs, wall-warts etc
The beauty of Opera is that it is really easy to set up as it simply uses on-off keying. If you can run QRSS you can run Opera. Other digi modes can be useful but require additional complexity. It al
Stefan, Thanks for the CW QSO and 439 report. It is my first on CW for over a year! I can't run much more power as I already have 800W RF and 0.3W ERP. My antenna is already almost as efficient as I
There was a problem with Opera32 decodes on 136kHz last night (presumably by those using the new version). Several decodes appeared with a fading percentage of "200%", whatever that means. These were
To illustrate the false decode problem I mentioned previously, here are some samples fro last night: This was a complely false decode as my last transmission was at 0045UTC. 10:31 136 G3XDV de SV8RV-
Sorry, Graham, but you are wrong. Last night's results did not "give a good working compromise between real and false detections." There were several very plausible but false decodes. These appeared
Graham, thanks for the useful info. I have sent you a direct email with some constructive suggestions. One snag with false decodes of this type is that you don't know they are false unless the sender
Having taken a long look at Opera 1.5.5, it seems to have good and band points, but is useful if used with great caution. On the plus side, it appears to have some 3dB more sensitivity than previous
Graham, The example you give below does not prove your case. In fact it does the opposite. The last figure in the OPDS readout, "15.4dB", shows that the decode is at the very edge of deciding that it
There is a British saying "Don't throw the baby out with the bathwater". Amongst the criticism of false decodes (which I have been part of), we must not forget that Opera is now more sensitive - the
The new checking system has just worked. JA8SCD was reported by SV8CS at nearly 10,000km on 136kHz whilst the JA was using a dummy load. This is plainly a false decode, but the new software showed "D
In the last 24 hours on 136kHz there have been several Opera decodes flagged up with question marks (and shown in red), indicating they need further examination to determine whether they are genuine
Alan referred to the 1999 solar eclipse. A good description of the LF radio tests done at the time can be found at: http://misan.home.xs4all.nl/eclipse.htm Mike, G3XDV ==
Good DX conditions last night on the 136kHz band. I received OP32 from UA4WPF (3422km) at 0001UTC, R7NT (2837km) four times between 2337 and 0537 and WD2XNS (5417km) at 0506. My own transmissions rea
Jay, I am inclined to agree with you, but almost all of the Deep Search spots that have no question marks are genuine. If at all possible, spots =with= the question marks should not be uploaded to PS
