John, The radiation resistance of this antenna must be about 5 Ohm, with a loss resistance of 20 Ohm the efficiency is 25%. So I guess a TX power no greater than 4W would be sufficient to meet the 1W
can't Tx linear modes yet Hello Gary, if I got it right WSPR is a 4-FSK mode and does not require linear amplification. 73, Rik ON7YD - OR7T Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.h
Hello Johan, interesting. Are the specifications of WSPR (coding scheme, shifts etc ..) somewhere available ? 73, Rik ON7YD - OR7T Correct, and, according to Joe K1JT, a "FSK tone accuracy" of 0.1Hz
1/4 wave inv L at over 100 ft high. Hello Mal, a great antenna, congrats again. I (and maybe some others) can only dream of such an antenna. The radiation resistance of this antenna must be about 5 O
Hello Mal, last night I could copy your QRSS signal (or should I say lazy man's CW) 599+. Congrats on the nice signal, your were beating SM6BZH (who was claiming 3 W ERP) by about 10dB. 73, Rik ON7YD
Gary, if the QSB comes from multiple path propagation (where one of both of the paths is changing) QSB can be different on different frequencies. One could even use the QSB/frequency pattern to deter
Jay, first traces at 2132Z, first decode at 2144Z. Seems it took your signal about 20 minutes to travel 1000km more south What power - antenna - ERP are you running ? 73, Rik ON7YD - OR7T Quoting jru
Andy, no copy here at the moment (14:45 UT). I will leave the RX monitoring for the next hours while working in the garden. Look at wsprnet for eventual spots from me. 73, Rik ON7YD - OR7T Its operat
Mal, I did build a "crystal radio" with a razor blade as detector when I was 14 years old. It had to be rusty to work properly and even then it was a very poor detector. And it is an AM detector, so
Dear all, last night I tried receiving WSPR using WSJT7. It works fine, but I cannot find any "upload button". Does WSJT7 (in WSPR mode) have an upload function ? 73, Rik ON7YD - OR7T Disclaimer: htt
KN05PS That's the same locator as YO2IS, maybe Sigi knows more? 73, Rik ON7YD -OR7T Hello LF! Receiving YO2X on 505.8kHz here for the first time 1740UTC. Transmission is CW/QRSS with the CW audible R
Mal, I have done it when I was 14 years old, it is not that difficult and is described in books and on the web. What is the point that I (or others) have to prove to you that we know ? Or do I have t
Dear wisperers, it's getting crowdy at the top of the band: 5 stations recorded. I am running WSJT7 and WSPR together and it works fine except for one odd event: WSPR missed the entire 20:08 slot (al
MCW: what a waste of bandwidth, Mal will allert OFCOM ! 73, Rik ON7YD - OR7T At 00:42 7/01/2009, you wrote: No problem! Use MCW! Has been typical for 500 kHz. 73 DJ1ZB "M0FMT" <[email protected]> sch
What is the difference (for others) between beaconing and a shear endless QRSS CQ-call or QSO. If that signal is S9+ and near the band centre it blocks in both cases a good part of the band for weak
Hello all, I guess it all comes down to "live and let live". While any kind of experimentation should be encouraged, one should also think about the impact it could have on other band users. But the
Graham, still 100% copy. Even when competing with Jim, who is 30dB stronger and only 50Hz up it works fine. Btw, Jim is pushing the "noise level" reported by WSJT7 about 12dB up. 73, Rik ON7YD - OR7T
Lee, with me the database at wsprnet shows km in the header 73, Rik ON7YD - OR7T Hi LF Group, Just been looking at the Database of tonights activity, and I'm reported at 700miles from GM4SLV Yet G4WG
Hello Klaus, On the other hand, WSPR has the advantage of automatic recording. But that is not an advantage of the mode, it simply is the lack of a corresponding simple program that does the same wit
