Hi All A preliminary report on the effect of the solar eclipse on LF radio signals has been published at the following Internet URL: http://www.xs4all.nl/~misan/eclipse.htm This report is based on th
Dear Mike and All, I am using a 'tuned conterpoise' on HF for a long time now. The systems electrical setup equals a tuned series circuit (in fact the same as the vertical earial it self). The point
Hi All, By looking closely at the electrical configuration of an aerial system with a tuned counterpoise the effects can be explained by reasoning as well as calculations/simulations. I have posted a
Hello All, One of the mistakes i sometimes make with Spectogram is not selecting the right audio source for recording. The receiver output is connected to the line input of the soundcard. I also do e
Hello David, The 5.5k mode workes with my PII-350 and 'SB-live' soundcard but there is a problem with the analysis. The sample+processing time needed for 2048 samples or more exceeds the real time! t
Dear David, I am not shure about the 3dB. Conventional filters improve the wanted signal when decreasing bandwith. The amount of energy/bandwith or signal to noise ratio that goes into the soundcard
Hi All, FB Larry! Please continue the experiments. It is essential to learn the propagation paterns and fading phenomena. I would like to take a look at one of your .WAV files. For the record: In the
Hi All, You can download the software at: http://www.veron.nl/tech/prog/eclipse.htm /// Thanks are due to ON5OO for writing the monitoring software. Does anyone have a good copy of the original EXE f
Hi All, /// Does this account for the peak and fade sinewave effect we get on CFH over about an hour, both at US sunset and UK dawn? Mike, G3XDV (IO91VT) /// Reference measurements around the time of
Hi all, There is more information about the influence of the sun on propagation of HBG signals in an analysis of signal measurements during the 1999 solar eclipse on the URL: http://www.xs4all.nl/~mi
Dear Dick / Bob and Lofers, Does the computer calculate the earth losses in the return path from the aerial system to the transmitter? If it would then the earth losses in a T should have been signif
Hello LF group, Did anyone do field strength measurements for a LF propagation path across this eclipse like during the 1999 eclipse? I am interested in observations of LF propagation during this eve
