I've read many references to an "e-field probe" and I've attempted to find out what that means exactly in my various antenna books to no avail. Web searches on...
Jason: I think you already got the basic idea: The most important point is that at VLF frequencies any practical antenna size is very short com- pared to the...
Have look at www.electricterra.com/Ernst/20070103_VLFXX.jpg showing 3 VLF transmitter signal strengths traces at 52.1N 8.5E for this day. There are strong...
Hi Ernst, what about your local weather conditions that day? From my own observations I get the impression that strong rainfalls influence the field strength. ...
Ernst, E-probe antennas may be sensitive to local weather and moisture conditions. I've seen signal levels change at higher frequencies during heavy rains,...
Don, thank you for your interesting comments. I am using a low impedance coil with ferrite core - no E-field probe. We have steady medium size solar winds from...
Hello, i just joined & need direction as far as antennas. I have been usig my HP 312 selective voltmeter as a receiver for shortwave & ham frequencys. It goes...
Dear me! I overlooked that you mentioned a 160 m _dipole_. So now my corections: You have about 80 m wire length in total. Ideally the two halves of the dipole...
... my ... two ... VLF. ... still ... My question now is, will this type antenna be ok or would one of the loop or other designs be better? I have plenty of...
Welcome, "chuckmf1135" Your long wire antenna will probably work as a marvellous VLF antenna, provided you do not attach a typical RF load to it, but rather...
... I'm afraid I don't understand your question. Getting started is something total different than achieving the best results, which can only be judged with...
... Yes, the choice of a receiver has a lot to do with whether you want to listen for natural or man-made signals. One of my SLRs (the Rycom) can pick up...
... What do these acronyms stand for? Google and Wikipedia didn't help. Peter...
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Alan Melia
Alan.Melia@...
Jan 10, 2007 11:21 pm
Peter in one of my previous hobbies/sports SLR would have refered to a Self-Loading -Rifle....but I dont think that is relevant !! When I was interested in...
... antenna, ... place a ... a ... expect ... somewhere ... would ... passive ... against ... decouple ... designed ... fed ... input. ... Thanks for all the...
... Take a look at these: http://www-user.uni-bremen.de/~ews2/RDF_project.html http://www.vlf.it/itulist/itulist.htm http://www.vlf.it/alphatrond/alpha.htm But...
Hello, I was out listening on the 11th (January) and noticed a somewhat odd signal. It was around 18.1khz and started up while i was watching it. Unfortunately...
Hi Andrew, I regularly receive this signal on 18.1 kHz - I think they call a multi-channel RTTY but I have no idea about the exact modulation. But it shurely...
Hello Andrew, Wolf and VLF group The signal you have heard is the Russian FSK mode T600, the western name for T600 is Bee 36/50. T600 is used for broadcast of...
Receiving nice whistlers here in Sheffield,UK at the moment. About 5-10 a minute, volume strength about 3-4 out of 10. Mark...
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secproducts@...
Jan 15, 2007 1:39 pm
Space Weather Message Code: ALTK06 Serial Number: 256 Issue Time: 2007 Jan 15 1334 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2007 Jan 15 1329 UTC ...
Hi all, I am quite a newbie here, and have read a few things about vlf radio, so I thought to join the group. I have already found great material here, which I...
Andras, The online NASA INSPIRE receiver is located on top of the National Space Science & Technology Center in Huntsville, Alabama, USA. The receiver and the...
Hello all, I'm also new on the list, but became a hardcore VLF listener in the past days. :) I have 2 additional questions about the NASA Inspire stream, if...
