Hi Lubos, The noise background does change rapidly. This is an indicator for a local noise source. Maybe you can observe it on a wideband window. Anyway i think your RX is very sensitive! It is impre
Scott, What would be the best time for a LF TX test to VE7? Maybe i can manage to do this on saturday. Is there a chance to do it just arround the sunset in Germany? You know, i mustn't fly the 300m
Hi Chris, Chris, it would be interesting to have a QRSS-3 and/or QRSS-10 window although it is probably just for fun since most stations will be to weak in this mode. Anyway it is a little effort and
Hi Roger, Nice to hear about your progress. Do you have snow as well in JO02 ? Maybe this makes it more comfortable to have the RX at home and the TX in 5 km distance in the forest where you can easi
Markus, I've added another 20 dB of range of my spectrum graph. Let's see if you still can overload it! ;-) 73, Stefan Am 13.12.2010 22:40, schrieb Markus Vester: Dear Mike, LF, cold and dry tonight
Dear VLF, In my 9th experiment, my signal was well received at 4X1RF in 2873 km distance. Chris has recorded the whole procedure and sent me 4.5 GB on a DVD as a registered letter (many thanks Chris!
Hi John, Am 15.12.2010 11:55, schrieb John Rabson: I am writing a piece on VLF for the Cave Radio & Electronics Group Journal and would like to include distance records. Can people please confirm tha
Chris, LF, Am 14.12.2010 17:27, schrieb Chris: HiStefan, Yes, but 600m is VERY long! The wire even laying on the ground I would expect to radiate quite well at 137 with that length! And how many watt
Hello Lubos, Is the difference of the minimum of the single turn VLF loop higher than on the multi turn loop? If so, then the single turn loop would be best for getting an optimal SNR. Interesting! M
Ah John, Sorry, there is another bug: The QTH of the kite antenna is JN49IS36VH, near Darmstadt. The Earth antenna is in Heidelberg, JN49IK67 I have changed the entries in the list below. 73, Stefan
The french VLF transmitter is now even stronger than DHO38, about 50 dB S/N in 1.46 Hz. I've never seen this before. Is it due to the propagation or have they made QRO? 73, Stefan
Hi Mike, Yes, some thoughts: Am 01.12.2010 15:36, schrieb Mike Dennison I believe the danger is to regard this as the 'optimum' speed for DX working, simply because the S/N ratio is good. Is that rea
Hello Gerhard, Very impressing! If this is your signal, it is above 400 km. Sadly there was no trace on my own grabber but the distance is 588 km. Can you arrange a frequency shift of 5 mHz during yo
Hello Mike, I just have extended my "EU-60" window for your tests. http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html 73, Stefan Am 10.12.2010 18:50, schrieb Mike Dennison: Sorry,
Hi Lubos, Congrats to that nice website and report! I am very pleased and impressed about that :-) 73, Stefan PS: Maybe you want to add a grabber page? :-) Am 10.12.2010 15:24, schrieb Lubos OK2BVG:
Hi Daniele, Am 30.11.2010 07:40, schrieb Daniele Tincani: Hello Stefan, I'm about to complete the construction of an E-probe based on your design (the original one, with both BF862 on the same board)
Dear VLF/LF group, I will do my 9th VLF experiment tomorrow, saturday 4th December. The permission for a 300m vertical antenna is available! The wind forecast changed again and tomorrow is a very sui
Dear VLF/LF group, The wind forecast is still promising and so i announced my next VLF/LF kite experiment at the german air traffic control and will get the permission for a 300m vertical antenna dur
Hi Gerhard, Am 12.01.2011 16:18, schrieb Gerhard Hickl: When you walk from one to the other, the sound would nearly disappear right in the middle but getting louder as you approach the other open end
