Wouldn't it be easier to convert to a balanced circuit?...
14594
reromeroit
Nov 2, 2009 11:05 pm
A new VLF observatory is on line from North Italy: Pontese is 2217m dew, over Teleccio dam in Orco and Soana Valley, inside Gran Paradiso national park. The...
14595
Walter Treftz
sjotrollet
Nov 3, 2009 6:11 pm
Does it have a URL or website? Tks Walt (N4GL) ... From: reromeroit <ik1qfk@...> Subject: [VLF_Group] New VLF observatory on line (www.vlf.it update) To:...
14596
Stephen McAdam
g4vbd
Nov 3, 2009 6:46 pm
Hi Walt and all I found ot through Renatos' web site http://www.vlf.it/ and the observatory is at http://www.webalice.it/rromero/pnts_observatory.htm Regards ...
What is the website for the new VLF observatory, Romero? [Non-text portions of this message have been removed]...
14599
reromeroit
Nov 3, 2009 10:10 pm
Hi Richard, sorry. My first post was too minimal: you are right. The web page of the observatory, intended as live data and audio stream is this: ...
14600
Brian
electricterra
Nov 9, 2009 5:21 am
Doe's anyone have any idea what this beacon is at 18.3Khz.? I have seen it lately just before dawn but now it is showing up just after sunset. The usual...
14601
Edward van Ulft
snake1nl
Nov 9, 2009 10:12 am
... Crisp picture, this is Le Blanc, there is no other station operating on that freq ww. Edward...
14602
Jean-L. RAULT
f6agr
Nov 9, 2009 11:58 am
18,3 kHz is affected to and used either by Le Blanc, or by Sainte Assise, our two french VLF transmitters sites. Jean-Louis F6AGR (Sainte Assise aerials are...
14603
Brian
electricterra
Nov 9, 2009 12:15 pm
Thank's Gentlemen, I am just surprised that if it is Le Blanc why I can not see other European beacons....
14604
Ernst
erni051
Nov 9, 2009 4:00 pm
... Brian, indeed, you should at least see DHO at 23.4 kHz then too. Bests, Ernst...
14605
Walter
karula4711
Nov 9, 2009 4:31 pm
Hi, whatever it was. I'm about 100 km from DHO so this station is strong here. Within the past days I had a signal on 18.3 kc which was nearly as strong as...
14606
Peter, 54N 10E
df3lp
Nov 9, 2009 6:23 pm
Hi, 22.6 KHz stopped transmission at 2009-11-03, 08:00 utc. Approx. 3 hours later, at 11:00 utc, 18.3 KHz started. I cannot see any significant differences (in...
14607
Brian
electricterra
Nov 9, 2009 8:53 pm
I will keep an eye on it and if it stays active perhaps I can detect it's Diurnal avriation for it's sunrise sunset. Perhaps that will provide a time zone for...
14608
Brian
electricterra
Nov 10, 2009 3:40 am
Well the beacon at 18.3 Khz. dissappeared into the noise after sunrise but it returned slightly after my sunset. I still do not understand if it is Le Blanc...
14609
Peter, 54N 10E
df3lp
Nov 10, 2009 3:01 pm
Hi Brian, Today, 2009-11-10, 18.3 KHz was off between 0800 and 1115 utc. Peter, 54N 10E...
14610
Brian
electricterra
Nov 10, 2009 3:28 pm
Thanks Peter. I am trying to plot it to see how long it is observable but it is just above the noise. http://electricterra.com/Data/VLFBeacon/0911101500.jpg It...
14611
Edward van Ulft
snake1nl
Nov 10, 2009 5:11 pm
Ernst, Brian, Maybe the position of Le Blanc makes the diff,aka the position above sealevel ? Edward...
14612
Peter, 54N 10E
df3lp
Nov 10, 2009 7:43 pm
Hi, ... I don't think so. But that structures could work as a phased array: http://maps.google.de/maps?ll=48.545475,2.5777564&z=15&t=h Peter, 54N 10E...
14613
vonu
vanvonu
Nov 10, 2009 10:27 pm
Has anyone ever seen an unphased array?...
14614
bob71741
Nov 10, 2009 11:24 pm
Yes, there are arrays of antennae whose radiating/receiving elements are not connected together in phase;this connectivity gives rise to the typical...
14615
Brian
electricterra
Nov 11, 2009 12:16 am
It is just coming out of the noise now. Not quite my sunset yet. I'll see how long it hangs around tonight. ...
14616
Edward van Ulft
snake1nl
Nov 11, 2009 1:34 am
Ok, Brian keep us posted, an an acompaning picture is welcome, See wether you can capture this other ststion mentioned. Otoh, I went back to your piccie, I...
14617
Edward van Ulft
snake1nl
Nov 11, 2009 2:41 am
Bob , Could you elaborate on phased /non phased array/ Thanks Edward...
14618
Brian
electricterra
Nov 11, 2009 4:45 am
I would have to say this must be Le Blanc and my seeing it must be due to conditions this time of year. Here is the latest that also includes a Tacamo...
14619
Peter, 54N 10E
df3lp
Nov 11, 2009 6:06 am
Hi Brian, ... Yes, North Norway, 1 hour ON / 3 hours OFF. What's about 37.5 KHz (Iceland) over there ? ... Look at 18.1 and 21.1 KHz; you are receiving...
14620
Brian
electricterra
Nov 11, 2009 12:29 pm
To see Iceland at 37.5 Khz. I will have to change the highend cutoff frequency of the receiver filter to allow higher frequency operation. I am in the process...
14621
vonu
vanvonu
Nov 11, 2009 2:40 pm
Exactly. Any element which is connected into the array is phased. Any passive element that is resonant is phased by it's separation from any active elements in...
14622
Walter
karula4711
Nov 11, 2009 7:49 pm
The transmitter is currently active. See http://olbers.hs-bremerhaven.de/gtx/gtx1.htm Both picture are from antennas in the house resp. the balkony. So lots of...
