Hi Joe, I just tuned to 477.7 and your signal is visible but not (yet) audible. QRN is worse than last nght. 73, Rik OR7T ________________________________________ Van: owner-rsgb_lf_group@blacksheep.
VO1NA now popping out of the noise, 429 for a short period. 73, Rik OR7T ________________________________________ Van: [email protected] [[email protected]] namens R
Hello Joe, your signal was audible for some minutes, but after that down in the noise again. I have to get out of bed at 05:30 UTC tomorrow, so I'm QRT now. 73, Rik OR7T _____________________________
Hi Stefan, I'm afraid you don't understand how excellent the deep search function of opera is: even if your ERP is 0 W your signal is detected thousands km away. SNR has become irrelevant. We just ha
Hello Dionysios, thanks for the very interesting comparisation. If the decodes from Costas are removed (at 7km his signal must be S9+++) it looks like this: sv8rv km07ks Opera-8 477khz correlation (D
Hello Joe, I just simulated the antenna with MMANA-GAL and it resulted in Z = 1.57-j185.5 Ohm. So the antenna C would be about 1.8 nF. However a 50 uH loading coil point to 2.2 nF antenna capacitance
Hello Fausto, what are you looking for: - QSO or just one-way copy? - mode? Just to give you an idea, my distance records on MF (2-way QSO): CW = 1849km (9H9ES) QRSS3 = 4073km (VX9MRC) JT9-2 = 1851km
Hello Roelof, I had half a dozen decodes of WG2XJM too. But this is still peanuts compared to the 2009-2011 winters where I could often copy the US stations as early as 22 UTC and as late as 7 UTC. L
Hi Stefan, not sure that all devices will adapt the picture size automatically, but it requires only a few lines of _javascript_ code to adapt the picture size to the monitor resolution. 73, Rik ON7Y
Hello Fausto, CW activity is dropping compared to mid-winter but I still hear many stations. Heard the past days: DL: DJ6CB, DF5QG, DL6TY PA: PA3FUN, PA0HTT, PE5T G: G3XIZ, G3KEV GW: GW3UEP SM: SM4WI
Hi Stefan, Tobias, all, so far I made 130 QSO's on 472kHz: CW: 88 (68%) JT9: 35 (27%) QRS: 4 (3%) WSQ: 3 (2%) But is the average distance for CW os "only" 477km while it is 1180km for the other modes
Hi Peter, I am not sure that the morning dip is related to the eclips, the propagation path didn't cross the eclips line at any time. Looking at the graphs, knowing there was an eclpis but not knowin
Hi Stefan, all, And i wrote an email to PE1NNZ and asked to a modification of the C-program to generate a signal with 4x higher FSK shift. Then it it would be possible to use that version for OMs hav
Hi Stefan, sri, no RF output. Just a audio signal (+/- 1500Hz) via the sound card. It is intended to be used with a HF TRX (most of them will not transmit below 1.8MHz) and then divide the (attenuate
Joe, give it a try! But be aware that the top-load will collapse at 01-04-2015 23:59:59 UTC ;-) 73, Rik Van: [email protected] [[email protected]] namens jcraig@mun.
Hello Uwe the Schumann resonance is determined by 1. radius of the earth 2. speed of light 3. density of the ionosphere As 1. and 2. can be considered constant a raise of the Schumann resonance (by 3
