Stefan try a look at http://g4hup.com/RFC/RFC.htm its 100ma/1A full-scale. Follow the documentation, click under the pic and find the circuit and cal procedure which should give a clue to reading hig
Hi Markus, yes I think that has been happening, but in Laurence's case the first post did not appear to any of us so that was probably bounced on theway in, but I have seen cases were posts have been
Hi Rik the only problem with your "inter-europe" frequency is that it clobbers anyone listening for transatlantic signals. I would suggest restricting operation there with a signal the size of Chris'
Hi Laurence my book gives Stainless Steel as 8 times resistivity of Brass and 40 times that of pure copper so maybe you were pushing your luck a bit, though I would have thought the connections at th
Well there is a cohort of noble men who have set fire to, window frames, fences, sheds, tuning boxes etc with 136kHz RF over the years :-)) plus minor infringments like rope guys, and waste-pipe spre
Stefan the Dst is good at -10nT :-)) so you may well be right. The storm was only relevant to Laurence as proton events cause PCA, which, as you say, not a problem much below the Arctic Circle. It ma
Ah nice! I did wonder about RTE but last time I considered it , it was under a death sentence. But it seems to have survived. I presume the 0.25Hz is due (possibly) to a gravity wave in the D-layer.
Hi Andy I havent checked recently but as far as I know NPL measure Droitwich twice a day and post the tabulated results on their web site.If they see a problem they contact the contractor (was Merlin
Hi Andy, maybe or maybe not. I did detect a "breathing effect" of a few parts in 10^11 soon after the synth was replaced at Droitwich. At this level I was not sure of my own stadard's stability which
When I used to visit the Radio Club in Liverpool in the late 50s we met in a church hall just off Queens drive. One local with topband mobile parked in the drive would fire up 10W of top band take ou
Hi Stefan yes it's interesting because there has be steady low level geomagnetic storms since the 3rd at Kp=5. I am wondering if what we are seeing is more a feature of a predominantly N<>S path rath
Hi Stefan ok thanks for that clarification. It is for that reason I rarely use amateur reports for calculations, though the spot data is interesting, as is any data on new long paths. Alan G3NYK Hi A
I think that maybe too much emphasis is placed on specific structures. At these frequencies any structure of conductors can be resolved into an equivalent vertical and horizontal arrangement......eve
Hi Markus, I may have has my tongue in my cheek about the "big beach" called the Sahara I noticed difficult to understand variations on the signal from Marathon in 2002, which crosses the Alps on its
Measured ....the only type that matters :-)) Alan -- Original Message -- From: "Graham" <[email protected]> To: <[email protected]> Sent: Saturday, November 07, 2015 2:31 PM Subject:
I think you are waving your arms around G :-)) There is no "transformation" the elevated coil merely reduces the voltage in the section below it. This reduces the current forced into lossy environmen
Not really ! and I dont have a text book that defines "apparent capacitance". :-)) If there is no environmental loss the elevated loading coil makes little difference, it does increase Rrad by up to
Hi Markus, I have never been able to pin it down because the reports were "anecdotal" rather than systematic, but I noted some years back that there were more reports of ICM after a magnetic storm. H
Hi Andy, that plot has all the indication of a "trip" .....maybe a mouse of a very (very) big spider in the loading coil :-)) the exciter would continue, only the PA would trip, so it would come back
