Hello Andy, You'll see that down to about -14dB S/n (2.5kHz) is just about detectable as an audio tone - although I doubt many even experienced OPs could read CW that low <<< Using a 10 Hz bandwidth
Hello Chris, The "PCB-antenna" is equivalent to a 1 feet rod and though counter intuitive, adding one won't help. As with all active whip designs, at VLF / LF / MW and lower HF the whip is NOT the an
Hello Laurance, The weird thing is that looking at NDB's, there is still a path every night to Alert in Nunavut and the last two nights a very short lived opening to Churchill, Canada MB. This is on
Hello Chris, The gate of the JFET at the input of the antenna will start to conduct when the voltage gets high and prevents it to rise higher. In other words, it is protecting itself. You should look
Hello Joe, Good copy of your signal on 137.777 kHz last night. I even could hear it by ear!!! Attached reception around (my) local sunrise. My calibration is a bit off. Best regards and 73, Roelof ==
Hello Martin, I have never tried WSPR-X. The manual states: 200-Hz WSPR-2 sub-band, i.e., 1600-1625 Hz above the standard dial frequency on each band. This will be handled automatically if you set up
Hello Joe, Another excellent night for your signal over here in the Netherlands.It was there al night and moreover it lasted almost two hours after local sunrise!!! See attachment. Note, sunrise is a
Hello Stefan, I found this earlier post: For your information, Michel FR5ZX (Reunion Island), Africa, sent to Lars a report and an audio record of his SAQ reception on 17,2 kHz. Michel was using a mi
Hello Andy, The station underneath RTE is from Algeria. Contrary to what happens in our part of the world on medium wave with many stations closing down, this station has recently been upgraded an ru
Hello Alan, For your interest, for the frist time ever I have received NAVTEX Iran last night at 00:57 UTC. This is very rare and has only happened in Europe twice: in March 2006 in the UK and in Mar
Hello all, Lately I have noticed a new data station transmitting around 450 kHz. The signal is 9 kHz wide and transmits on 2 minutes after the hour for 100 seconds. The transmission repeats every 6 m
Hello all, For those interested in VLF, at the moment rather than the usual 3, 6 Alpha stations are on between 10 and 15 kHz. Best regards, Roelof Bakker, pa0rdt
Hello Andy, The odds at this time of the year are that it is JJY from Japan. time code are different. In lieu of the year bits, the station's call sign is broadcast at 100% modulation during seconds
Hello all, Beautifull aural and visual copy: graphic 73, Roelof Bakker, pa0rdt Middelburg, Netherlands Jo11tm The following section of this message contains a file attachment prepared for transmissio
Hello Luis, You're welcome! Today I have connected my PERSEUS server to my standard mini-whip, which is followed by a two port home made splitter. This splitter works down to 10 kHz and should be fin
Hello Jacek, I gather you are talking about a new type of video game, which adds virtual reality to an other virtual reality for sure! 73, Roelof Bakker, pa0rdt
Hello Joe, Attached my Linrad playback screenshot of last night. Excellent signal and easy aural copy, no problem. I did not expect it as propagation from your parts have been horrible lately! 73, Ro
