Hi All, Many thanks to all who responded to my enquiry. I have got a lot of useful ideas from these responses, but the main conclusion seems to be "try it". Thanks again, 73s John, G4CNN ____________
Thought this might be of interest to the group: " A Twisted Tale of Sunspots: Like a double-barreled ray gun, two magnetically complex sunspots near the Sun's central meridian are pointed toward our
For an estimate of losses : Skin depth of copper at 137kHz is approximately 0.18mm From D = 503 SQRT(Resistivity / Freq / uo) For Cu Resistivity = 1.7E-8 Ohms / m, and uo (magnetic permeability) = 1
Hi Rik, This is excellent stuff and very opportune. I have been struggling to work out what antenna will work best for me, and with Laurie's help using EZNEC (thanks Laurie) have evaluated a serial m
Hi Rik, Now I have had time to study your web page on 136 antennas, I have the following comments, which I hope you will find useful. 1. The reason that the antenna current decreases linearly to zero
Hi Rik, Mirrors don't really reverse left and right any more than they reverse top and bottom, what they really reverse is front and back. The word I think you were looking for is anti-phase. Don't w
Hi all, The following reports are copied from my log of 71.8 kHz +/- for the last two nights, from 19.00 till 21.00. There was a very high noise floor, which may be the reason for the somewhat lower
Good for you Rik! John, G4CNN _______________________________________________________ Get 100% FREE Internet Access powered by Excite Visit http://freelane.excite.com/freeisp
Hi Tony and All, DJ9IE is certainly putting out a good signal, but he seems to have great difficulty in hearing any of the numerous responses. He has been on calling CQ most of this week using what s
Hi Mal, Instead of just pointing us to the library, can you be a little more specific? What are the key articles to read and what references would be sufficient for the British Library to find them?
Hi Laurie, I have noticed that your signal is significantly stronger here in the last week. Whereas you were only S3 before, you are now 5 or 6. I am not quite sure where you are and you may be in a
Hi Tony and Derek, These reports probably don't add much to what you already know, but in the hope of adding to the overall picture: G4KLF was S7 on my meter here in Reading on Saturday 8 April, a go
The following extracts from my log from Friday night to Sunday, include reports of S7 and S8 on 73 kHz: QRA UT Date Rprt KHz Remarks G3WSC/P 16.15 11.4.00 5,9+10,9 136 testing DK9DX 17.50 11.4.00 5,3
Hi Dave, There is a station on 89.87, but it seems to be a regular fast tick. There may be some modulation that is unknown to me. Since LORAN is quite strong at these frequencies, I wonder whether on
Hi Mal, Learn to touch type, it is well worth the effort. John, G4CNN _______________________________________________________ Get 100% FREE Internet Access powered by Excite Visit http://freelane.exc
Hi Dave, What about telling us how to do it - I refer to 64 pin Surface Mount Devices? I found it a real struggle to solder in an 8-pin DDS SMD but did improve with practice (killed the first one!).
Thanks Dave for your helpful hints. John, G4CNN _______________________________________________________ Get 100% FREE Internet Access powered by Excite Visit http://freelane.excite.com/freeisp
Hi All, The last two days the static has been particularly bad here, although today it is perhaps a little less. The mornings start off reasonably quiet, but it builds up by late morning and during t
Hi Andy, Larry and All, I can confirm Larry's statement about the unreliability of serial port timing under Windows 95/98. This is a consequence of the change to pre-emptive scheduling from Windows 9
Hi "msr" and Väinö, Hardly, Jupiter is on the other side of the Sun at present. John, G4CNN _______________________________________________________ Get 100% FREE Internet Access powered by Excite Vis
