Hi Stefan Very nice experiment down there. Congratulations again :-) I have been trying to track your calculations but got lost with your antenna voltage figures At 6470Hz with L=1.29H that should be
Thank you for the explanation Stefan Looks really hard to get oriented in such a dense wood ! Good idea to pimpoint the exact location from GPS ;-) OK to the low impedance input of NPN. And agree the
Hi All I have set a "crude" grabber for MF WSPR, MF Opera8 and LF Opera32 Update is not very fast at the moment Receiver SDR Perseus with SDR Console (multi VFO) and MiniWhip antenna at IM98WX http:/
Hi All (MF/LF/VLF/ULF....xLF) I will be attending the EME conference in Venice in two weeks. Have noticed an interesting lecture from Nico Palermo, the developer of Perseus SDR. There will be also a
Hi MF Real power from U3 to antena is 100mW So far just one decode in WSPR from G8HUH. Band is in good conditions 73 de Luis EA5DOM De: [email protected] [owner-rsgb_lf_group@blacksh
Hi Stefan, MF Thank you for the reports. Seems that the building tower is running as good as usual I'm using half ICL7667 on my U3, so that's why power is so low compared to BS170s But the case keeps
Trim grass Very similar to what happened in Parkes :-) http://www.skyandtelescope.com/astronomy-news/microwave-ovens-spark-radio-signals-peryton-05122015/ 73 de Luis EA5DOM De: owner-rsgb_lf_group@bl
Trim grass Trim grass This really remainds me of this other. very similar A lawnmower has been blamed for wrongly triggering sensors that predict when the Northern Lights will be visible in the UK. A
Trim grass May be interesting to watch this video from Leif SM5BSZ He shows how Linrad NB can deal with that kind of interference https://youtu.be/5asxOcRDdXo Anyway I'm with you Max ;-) Or at least
Hi MF Yes. I keep feeding 100mW to the antenna/building-tower Green mode. Electricity bill green too .... not red !!! ;-) 73 de Luis EA5DOM De: [email protected] [mailto:owner-rsgb_l
Hi LF Last night the LF coils were connected and started to transmit Op32 with just the 100mW from U3 https://dl.dropboxusercontent.com/u/7162072/fotos%20varias/MF/MF%20and%20LF%20coils.jpg So far, a
Thank you for the phase info Markus Can recall that the first tests last spring with same power and U3 were phase coherent But my U3 suffered a hard reset and turned back to factory default parameter
Hi LF Yes Markus. Signal must be following some Ryanair path bouncing from plane to plane :-) Since last night U3 transmits continously frame after frame. No stop to GPS calibration So may be the inc
Nice recordings from Juno Spacecraft while orbiting Jupiter Receiving the noise of the south pole auroras in VLF https://youtu.be/slE2i0O0pDY 73 de Luis EA5DOM
Hi LF Last night was 5w !!! :-0 Testing an audio amplifier with dissapointing performances Very interesting spots :-) 73 de Luis EA5DOM El 7 sept. 2016 2:18 a. m., Graham <[email protected]> es
Hi LF Thank you Stefan. Finally could see a trace in your grabber ! :-) There were also five Opera-32 correlation decodes at Markus grabber 2016-09-07 04:35:09 EA5DOM 1500km 137519.916Hz 141mHz -30.9
Ideas wellcome ! :-) I like the W1YD design http://www.w1vd.com/137-500-500WTX.pdf Don't need the keyer and would use an ICL7667 as dual mosfet driver For the mosfets what I have here is a couple of
Hi LF Thank you all for the reports But the audio PA is a hell. The good point is that looking at the results with this I can expect a very decent signal when using 50w and a clear output sinewave (c
Hi LF Congratulations Markus. Fine copy here at 1500Km https://dl.dropboxusercontent.com/u/7162072/Docs/136KHz%20Grabber%20DF6NM%20capture.jpg 73 de Luis EA5DOM
Congratulations for the Tx Alberto ! And for the first spots outside EA from G6AVK 2016-09-18 22:04:21 EA4GHB AA G6AVK JO01HO 0 477 -32 Op8__~32dB Nice to see another EA on air in MF. Keep improving
