Hi Stefan, I followed up your suggestion of elevating the wire off the ground and it seems that there is some benefit in doing that: http://people.physics.anu.edu.au/~dxt103/136/earth/3/ However, it'
Hi Stefan, That looks simple enough and from what I see, there are other happy customers (4x1RF, G3XBM and TF3HZ) so I'll make one. :-) Don't have the BF862 FETs but may have something similar, maybe
Greetings from VK! Temperatures are climbing up here but I'd rather be freezing in the shack and have decent, QRN free reception on LF/MF! 73, Dimitris VK1SV
Hi Stefan, I have read your adventures in the "dreamer's band" and I admit it has been very inspiring. Yes, I am planning some VLF activity soon. I have already got a kW capable audio amplifier, so a
Hi Markus, I will pass your suggestion to the local QRO operators here in VK. Personally, I am a bit of a QRP person, so all my transmitters are less than 100 W output power. And my antennas are so b
Hi John, Well, the S/N required for voice is much higher than that of QRSS30. With a puny 3 W of RF and QRSS30 it seems I can cover a distance of about 30 km and still have a S/N of 30 dB! Which impl
I see them too! Whatever it is, it's a big gun. http://people.physics.anu.edu.au/~dxt103/grabber/ 73, Dimitris VK1SV 2011/10/28 pws <[email protected]> Hi Stefan, Thanks for hint! You wrote: What
Hello VLF enthusiasts, I am interested in joining the VLF party. I have already tested a nice audio amplifier which will produce 100W RMS on each channel and is easy to bridge. I haven't given a lot
Hi John and Stefan, I know that the electrodes can be improved, the ones I used are 1 m long galvanized rods, driven 2/3 or so in the ground. But at this stage, I wanted to keep all but one parameter
During the meeting of the CEPT WRC-12 Conference Preparatory Group held in Bucharest between November 1st-4th 2011 an European Common Proposal was agreed. This ECP represents the block vote of 48
VLF, Am 15.11.2011 17:03, schrieb DENNIS EASTERLING: [...] I also have a mini-whip, but this has been extended for VLF purposes. [...] ...which is good since soon there will be some activity again o
Hi Stefan, Dimitris, what about your recent VLF experiments? Any progress? I have built a simple xtal based oscillator for 8.7 kHz which is coupled to a small audio amp (~10W). I am planning to use
Hello Markus, There seems to be a problem with the time in spectrum lab. The time in the text box is correct, however the time in the X axis is correct when I start spectrum lab, but seems to be goin
All the credit belongs to Stefan for having such a great setup but also having the enthusiasm and optimism to attempt such a seemingly impossible task! Also, I would like to thank Roelof for designin
When I was young, I used to send back attached .doc or .xls files with the excuse that I don't use Microsoft products on my computer, which wasn't even a PC. I pissed off many people by telling them
Hi Mike, I would like to share my web page which described a few very simple experiments I did a few months ago: http://people.physics.anu.edu.au/~dxt103/136/earth/ There sure is a lot to explore, es
Hello Stefan, We had a lot of lightning activity last night and noise levels were high. I was woken up by loud thunder a couple of times, and that's unusual ;-) Did you receive any reports from the o
That's exactly the idea :-) Also, if all components are selectedfor a QRO operation, they will probably survive any kind of dodgy condition you may encounter in the field. I did not buy that FET, I
