Dear Marcin, My /p ground is a copper band of about 20cm x 25m x 1mm (abt 25kg, so no problem in the wind) With this band, just rolled out within 1...2 Minutes I get a overall loss resistance of 50..
Hi Ken, We have ordered these diodes before some years at: Getronic GmbH Warnstedtstr. 57-59 22525 Hamburg Tel +49-40-54744-100 Fax +49-40-54744-150 Sorry, I don´t know a distributor in the UK How mu
Hey Jay, tnx! I will start NOW, that means i put everything in my car and drive on the mountain/hill in JN49IS. So it still takes 60 to 90 mins to see/hear the first sigs. How long I stay, that will
Hey Dmitry, Also tny for the QSO and the picture! Sri for my rx problems. The BF981 in my Converter seems do be damaged and so I had to use the IC706 instead of the K2 ;-) Your locator is KO73DG? Tha
Hey Andrej, LF Thank you very much! That is a great motivation form e and i will spend time and energy to reach a better RX and then we will surely get a qso! Yesterday, as I have put everything in t
Hello Markus! Now it´s half past 3 in the nigeht and i am back ;-) Thanks for your infos! 120µV/m, what does this mean for my calculated ERP? I´ve never got such a field strength rprt yet but we coul
Dear Lowfers, This is my first mail to the reflector and so i want to say hello to all :-) It´s nice to be able to participate now here although my activity will stay on the band mostly ;-) If there
Hello Lowfers, Is there any good literature in the web (web-site or pdf or book) about the propagation on LF? Best would be, if it is created by a ham for the hams! 73, Stefan/DK7FC
Hi Ken, My hint is to try a BV8 Diode. It is able to take 500mA. On my work, I have good experiences with the BV16, the 16kV Version. Each one costs abt 1. Three in parallel, thermal coupled, should
Hi Dave, LF, Yes, a transverter would be an other possibility but it would be much more complex I think, just when regarding the needed power (compared to a LED). And you would get new problems when
Mni tnx Rik for your answer! No, you didn’t spoil the fun at all ;-) I have some remarks/ideas. The coil losses increase linear with the power but not more than linear. So, 10x the power wouldn
Dr LF Group, Will there be any activity this evening? I want to try my RX-Antenna and need some signals, if possible in QRSS3/DFCW3. If it will, I would drive to “my” hill and do some tes
Hallo Gerhard, Gratuliere zu dem Wandler! Das ging ja schnell :-) Wegen der Anzeige: Welches Gerät verwendest du denn? Ein analoges Dreheisenmessgerät ist beispielsweise unempfindlicher gegen HF-Eink
Hello Jim! First i want to say that i am glad to meet you here. Do you remember our QSO in 2004? And mni tnx for your article to the tuning meter (and others)! I have built it 2003 and it is for me t
Dear Jim, LF, Thank you for these explanatory notes. And i have nothing to disagree ;-) Yes, with a B2 recifier, the "minus-pole"/ground have a potential to earth and so an isolating transformer is n
Hi Rik! Glad to meet you here. Congrats to your websites! I’ve often taken a benefit from it!! I don’t know abt „von“. (Is that question meant true? J ). It’s not soo im
Rik, LF, Tnx for your detailed explanations! I will not forget it any more! :-) CU tmw or Sunday! Stefan / DK7FC PS: I just bought my new and biggest kite ever: 8,1m^2, that needs a 500kg braid and j
Why are the topics affecting 500 kHz not marked as "MF: ..." in the subject? I thought this is the reason why we write "LF: ..." in the subject of mails affecting 137 kHZ? Or have I misunderstood "th
Well, if I apply 1kW to a bad antenna and get 100mW ERP, then 10kW will get 1W ERP and this is thus not nonsens of the legal limit regs but rather a gain of 10 dB. The same when you increase from 100
Dear Lowfers, It's nice/funny, that my explanations gets such a resonance ;-) I can imagine about the problem of local QRM brought by the coax to the preamp. That brings me to new ideas at once. But
