...and it was possible to drive a 10mm green LED on the earth antenna, just by connecting! It was possible to watch the AM modulation of DLF! 73, Stefan
Hi Eddie, Am 01.07.2010 21:12, schrieb g3zjo: This is the first time I have ever detected an Amateur signal on 136kHz. Eddie Congratulations! It will not be the last :-) 73, gl, Stefan
Gary, Interesting! There one can see the propagation optimum between RX and TX. Normally the screenshots have no time information... Tnx, 73, Stefan Am 27.07.2010 13:29, schrieb Gary - G4WGT: Hi LF,
Roger, VLF, I will check the resonance curve in the next experiment. Maybe it is higher than expected due to the high R in that RLC-circuit... So maybe there are even some many Hz available... Stefan
Hi Wolf, Some types of audio amps have problems with reactive power. Do you really need a linear PA? Ah i suppose it is a linear PA, but in switch mode anyway? But why do you need much cooling then?
Dear LF/VLF group, It took a long time to get a proper wind forecast in a time sector where i can do a kite experiment. Also it took a long time to get the special permission for the new kite antenna
Hello Rik and the group, Agreed! But i think it is rather easy to make a comparison measurement with a samller loop (to the same time). This, i did today in the evening :-) Riding my bike to the eart
Gary, Yes. And, the "5" could be OE5ODL! Maybe if it appears again you can check the DF6NM LF grabber. If it is very strong there you can see it almost as a confirmation for this... 73, Stefan
Hello Alan, Thanks for sharing your knowledge! Maybe i will have some questions to you in some months when i want to come back to 137 with the 300m vertical... I am not an expert in interpreting the
Hi Roger, I have just read about your todays ELF TX test on 838 Hz. Congrats! Can you tell me why just exactly 838 Hz? Far away from 850 Hz and 800 Hz, clear, but why 838? Is there a reason? 73 and g
Dear VLF, Today i was in the forest for more than 10 hours doing the following tests/works :-) : Today i did my test on 8,97 and 7,97 and 6,97 kHz. It was possible to transmit on the lower frequencie
...heavy impressive thunderstorms are coming or are going down in west europe! Currently 30000 lightnings within the last 2h in Germany! See: http://www.wetteronline.de/radar.htm http://www.blids.de/
Alan, Which time (UTC) would be your recommendation for trying a transatlantic DX reception on 9 kHz, say to canada? Any ideas? Other experts are asked as well here!
Nice said Markus! I also hope so... Is it possible that they are making a longer break for repairing the system? Summer time may be best for that since the achievable communication distances are sure
Hello Jim, VLF, Thank you for your helpful suggestions! Es tnx for calculating the FS at the earth antennas QTH! This was what i didn't know how to do ;-) Yes, i have a low pass filter attached at th
Roger, this depends on the bandwith or Q that you want to have. You could build band filters that are much smaller than the band! But this is maybe not necessary in your case. Something between 1...1
Am 15.07.2010 20:07, schrieb Roger Lapthorn: Has Dr Gibson written anything already to give us a clue what he thinks is going on? ...and John, ask him if he wants to start a project with us! Maybe he
Most probably i will work there tmw arround 9 UTC. It is a test on the earth antenna, trying to reach abt 50 km or even 174 km. You will see it on my VLF grabber but it makes no sense to try receivin
