Hi Diego and Rolf, Thanks for the info. Is there anything known about keying speed, text and transmission pattern? We´ll listen at a Perseus SDR and a 200 m Beverage Antenna to South America at our c
Sorry Diego, This night no signal detected, neither at DL0AO (JN59VK, Perseus, SA-Beverage) nor at DK1IS (JN59WK, Perseus active rod). As Rik says QRSS 10 or 30 would be a fine idea if possible at yo
Am 17.10.2018 um 02:12 schrieb cx4di: today testing in QRSS1. 73s cx4di Hi Diego, do you know the exact QRG of your last transmissions? During the night from 20181016 to 20181017 I repeatedly saw
Hi all, plus 10 Hz from South America to Europe - that´s the final proof how fast earth is spinning! No kidding: if Marcus even heared Diego at 472995 +/- 1 Hz then it seems I saw some other weak DX
Am 09.11.2018 um 00:39 schrieb Markus Vester: After the sad demise of all LW and MW broadcasts in Germany, a handful of pioneers came up who are operating legal low-powered medium wave stations in th
Hello group, does anyone of our VLF-/ELF-freaks know how to modify the original SpectrumLab program for sending and receiving much lower speeds on QRSS and especially DFCW? The upper limit now is 60
Hi Stefan, thanks for the tip - I should have paid more attention to all those staggered information layers in the huge SL program package! I´m curious about what to overlook the next time ;-) 73, To
Am 07.12.2018 um 00:48 schrieb Riccardo Zoli: Hi VLF, I'm putting on air a continuous carrier with an antenna current of 610 mA. Reports are welcome. All the best 73 de Riccardo IW4DXW Hi Riccardo, a
Am 06.06.2013 14:56, schrieb C. Groeger: Hi, I'm testing now on 136.5 kHz. Reports are welcome;-) Will call cq at 13.30 in cw 73, df5qg Christian Groeger Hello Chris, thanks for CW-QSO at 1350 UTC on
Am 06.06.2013 23:50, schrieb Stefan Schäfer: Hello Chris, Tom, Argh, i missed the session! I would like to try a QSO with you Tom. Didn't know that you are QRV on 2200m. Your signal on 630m was very
Am 08.06.2013 18:15, schrieb Roger Lapthorn: Some months ago - time flies, so it may have been last year - someone kindly sent me a copy of a paper, or at least a formula, to work out the radiated po
Am 16.08.2011 22:14, schrieb wolf_dl4yhf: Hello Tom, Yes I use a UHF link, but "only" for VLF, single channel, covering 500 ... 20000 Hz. The dynamic range is somewhat limited as you can see on the V
Am 16.08.2011 22:17, schrieb g4gvw: Hi Tom, While it may not be practical at your location, an "optical link" does not HAVE to rely only on optical "cable" link but might also comprise a projected li
Dear LF-Group, from time to time UHF-links are mentioned to carry radio signals from a remote receiving antenna positioned in a low QRM-region to the main station. At least Wolf, DL4YHF, seems to hav
Dear ferrite specialists, dear LF group, what do you think about an array of many parallel mounted ferrite rods, each of them carrying only a few windigs, all windings connected in series (and then p
Dear Jim, LF Group, thank you for your comments, they confirmed my fears ;-) . Interesting anyway the idea with the vertical array, will test it one day. Tu es 73, Tom, DK1IS
Am 20.01.2012 22:18, schrieb henny van elst: Hello Stefan,yes i use the ropex,and i do not have the replacement parts available.so now i can work on the qro station with 4 pl519 tubes,i will send you
Am 29.06.2012 23:54, schrieb Stefan Schäfer: MF, It becomes better! I just realised that this filter is perfect to protect a receiver like the IC706 when using a BIG antenna as the MF receive antenna
Am 28.06.2012 00:33, schrieb Stefan Schäfer: MF, For the homebrewers, here is my prototype of a MF class D PA that operates at 12 V DC. Input frequency is divided by 4, so a normal HF TRX can be used
