Hi Spiros, I called you for the past 15 minutes, but no luck. Have to go QRT for dinner now, maybe later this evening? 73, Rik ON7YD - OR7T PS your signal here: 1654 -26 0.1 1101 1 CQ SV8CS KM07 1702
Here QRN is also much higher than the past days, but still solid copy. CU later. 73, Rik ON7YD - OR7T Van: [email protected] <[email protected]> namens SV8CS-Spiros
Hi Luis, all, TA propagation was no so good (compared to the previous nights), but toward southern directions it seemed much better. Related to the increased K-index? 73, Rik ON7YD - OR7T Van: owner-
Dear all, a few months ago there was a short discussion about a "revival" of the slower JT9 modes such as JT9-2 and JT9-5. These modes existed in early versions of WSJT-X, and had the advantage of a
Oops, a typo in the filename. I renamed it on the server, the link should work now. My applologies! 73, Rik ON7YD - OR7T Van: [email protected] <[email protected]> n
Hi Paul, About JT9 coding: for this I am using another exe file of the WSJT-X suite. It seems to work fine, both for free and structured messages. 73, Rik ON7YD - OR7T Hello Rik, I am very interested
Dear all, the first bug is discovered ;-) I deliberately limited the maximum audio frequency to 1400Hz (as it is not a good idea to use JT9 in the WSPR band), and this is send as a parameter to the d
I just uploaded version 0.9.01, the maximum frequency bug for JT9-2 and JT9-5 should be cured: http://472khz.org/SlowJT9/SlowJT9_setup.exe​ 73, Rik ON7YD - OR7T Van: owner-rsgb_lf_group@blacksh
Dear all, just a short notice that the shown S/N values are those delivered by the JT9 decoder, not taking the audio conversion into account. This means that the real S/N values are about 3dB lower (
Bundesnetzagentur Hello Marco, I had SlowJT9 running in JT9-2 mode and copied you, but had left the shack for some minutes: 2055 -11 0.0 1106 2 CQ DD7PC JN49 I called you when I came back, but you pr
Bundesnetzagentur Hello Marco, all, I will leave SlowJT9 in JT9-2 mode running (RX) overnight. I will be in and out the shack till 23 UTC and will reply to any call I can catch. If there are any over
Bundesnetzagentur ​In addition to my previous mail: I have rather high QRM levels below 800Hz audio (at 474.2kHz dial USB). Best is between 900Hz and 1200Hz audio. 73, Rik ON7YD - OR7T Van: Rik
Hello Paul, I cannot find the WSPR15 specs right away, but I assume that is is just a "stretched" version of WSPR(2). In that case it would be 4-FSK at 0.195 Bd and a tone spacing of 0.195 Hz (0.8 Hz
​​Hello Markus, FSKing the carrier a few Hz would be easy to implement and easy to detect. One option would be DFCW another would be WSPR. For both you would need no more than arduino boa
Hello Markus, For 1: extending the audio frequency range is possible, limitation is the fmax of 5kHz of the JT9 decoder. As a result the maximum audio frequency is 2.5kHz for JT9-2 and 1kHz for JT9-5
The past month there is JT9 and FT8 activity almost every day on 630 m, but most of the time the same 4 ot 5 stations. But having a look at John's (KB5NJD) daily reports (http://njdtechnologies.net/c
Hi Paul, all, "I don't know if it is possible to run two instances of SlowJT9 with different settings?" Your question triggered an idea: it should be possible (and even not very difficult) to decode
