Hi Alan, from the days of repairing TV's I remember the permanent magnets on certain "coils" too. Guess they used this to distort the current waveform in a controlled fashion for the deflection unit.
Hello Hartmut, Amazingly clear image despite QRN .. never was able to copy VO1NA so clearly, so for my curiosity : Did you use any kind of noiseblanker when making the recording, hard- or software ?
Greetings all, Just found this on the German "DARC" website: Die Frequenzbereichszuweisungsplanverordnung auf der Grundlage des TKG ist am 7. Oktober 2004 in Kraft getreten. Sie enthält Verbesserunge
Hi Dave and group, The document is at http://www.darc.de/aktuell/voinfo/vor151004.html Well, is it already in force ? The passage ... [..] Die neuen im wesentlichen für die Funkamateure vorteilhaften
Hi Markus and the group, Thanks for the flowers Markus - I guess your new DSL connection works now, and causes no harm to your LF reception. I was not so lucky with the new antenna system here (at DF
Hello Uwe and group, Concerning 1-W-ERP limit in DL: Seems the info on the DARC-website was a bit ahead of its time, or too optimistically interpreted.. Good luck to anyone in the TA-business - thoug
... dear Jim M0BMU and Reino OH5UFO, if he is on the reflector. Just had to finish a three-corner QSO on 137.7 when the local QRM plus Luxembourg noise took over. Nice to see some activity, and thank
Greetings all, This may be interesting for TA observers (and -maybe- aurora watchers). Look at the Kiruna magnetometer: http://spider.irf.se/mag/ Now back to 144 MHz, maybe some LF later. Regards, Wo
Greetings all, Looks like Dave's request for a bit more CW activity has helped, at least this sunday (Nov. 21st): Heard (and mostly worked) G3YXM, M0BMU, G3XDV, G3AQC, SM6BHZ, F6BWO, DM2BHG, DK6NI, D
Hi Brian, Anyone else capable of PSK ? Well at least Markus, DF6NM, and myself (working at the club station DF0WD) can - using linear power amplifiers. We did a few tests with PSK (M0BMU also involve
Greetings all, I tried writing an MSK decoder, re-using parts of the PSK31/PSK08 decoder, but like Bill didn't get it working properly. Furthermore, at that time I was happy with the performance of P
Hi Alberto, Will one of the big "pro's" of COFDM -its immunity to multipath and "reflections"- really so important on LF with a very low symbol rate ? - well this is just an initial thought, I don't
Hi Johan, To be honest I didn't know about this novel decoder principle, but a quick look lead to the conclusion that the printer at the office will get something to do on friday ! Thanks for the poi
Hello Brian and group, I will try PSK31 , PSK08 and PSK02 on Sunday morning (1000-1200 UT, maybe earlier), frequency 137500 Hz. For comparisons, I will transmit "normal" PSK31 with the usual amplitud
Greetings all, Alberto Firstly, I like the idea of Andy, of a GSPSK (Gentle Sloping PSK), which should substantially reduce the amplitude variations of the signal, when subject to phase modulation. A
Hello group, Some "on air"-tests performed saturday evening showed no big difference in the performance of PSK08 with amplitude shaping and "slow phase" variation. Thanks to DF6NM's grabber (with the
Hello Ingolf, Thanks for the report and the screenshots. It was actually me at DF0WD, trying to announce "NOW PSK08" and "CQ DF0WD K" on Markus' screenshot. Between the HELL transmissions, the mode w
