Hi Shawn and group, Indeed, stunning ! Go for the early dawn after a night with a chance of auroral chorus.. For us mountain-man-wannabe's, the only chance to...
18468
dl4yhf
Oct 1, 2011 7:31 pm
Again decent whistler activity, on the three streams. Cheers, Wolf ....
18469
Shawn
vlfkorgan1
Oct 2, 2011 2:18 am
Hi Edgar, I am glad to share. There is a sensitivity that can only be achieved away from power lines (and even greater sensitivity atop a tall mountain)...
18470
EdgarBigDog
edgarbhmfa
Oct 2, 2011 5:23 am
Hi Shawn, my Adult Kiddo Son, age 25, is in COS and has a nice (EarthRadio Scout) Loop Receiver that is set up to use wire loops strung in trees. I'd love to...
18471
wellsia
Oct 2, 2011 2:27 pm
Hi All Just a quick ?? on coax cable, whats the lowest loss cable to use in VLF work. have to go about 100' and need to lowest loss possible. Any ideas or...
18472
Alan Melia
g3nyk
Oct 2, 2011 3:06 pm
Hi Coax loss is not usually quoted at LF and VLF because it is mainly due to dielectric loss (and of most interest at higher frequencies) with perhaps a little...
18473
toddroberts2001@...
roberts50000
Oct 2, 2011 11:11 pm
Good quality XLR cable makes an excellent screened balanced feeder at VLF frequencies. If you want to use unbalanced coax, RG213 is very low loss and has very...
18474
Sead Kulenović
skulenov
Oct 3, 2011 7:51 pm
Hello, I use just an ordinary UTP CAT5 cable, used for Ethernet. I've received whistlers and Schumann resonances using this type of cable and never had any bad...
18475
SWPC Product Subscrip...
swpc.products@...
Oct 5, 2011 8:02 am
Space Weather Message Code: SUMSUD Serial Number: 134 Issue Time: 2011 Oct 05 0800 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2011 Oct 05 0742 UTC ...
18476
Shawn
vlfkorgan1
Oct 6, 2011 4:33 am
I finished making a one hour CD of the whistlers from Sept. 29th. There were two whistlers which really stood out. The first one was a "wobbly" whistler...
18478
Shawn
vlfkorgan1
Oct 6, 2011 4:40 am
I took the space out of the file name. The below link should work: <http://tech.groups.yahoo.com/group/VLF_Group/files/Temporary%20Folder/SK09292011Clip.wav> ...
18479
John/AF4EX
af4ex.radio
Oct 7, 2011 12:12 am
... Shawn, in what sense is this whister 'wobbly'? I've been listening to it (and looking at its spectrogram) and really can't see any warbling or variation in...
18480
Shawn
vlfkorgan1
Oct 7, 2011 12:52 am
Hi John, The wobbly portion of the whistler occurs between 3 to 4.5 seconds into the recording. I could not get a spectrograph to reveal the effect however it...
18481
Shawn
vlfkorgan1
Oct 7, 2011 3:33 am
I made a short file with examples of two of the best whistlers from Sept. 30, 2011. They are examples of two loud whistlers (S5 in strength) followed by...
18482
alex161476
Oct 7, 2011 12:20 pm
I came across this article that may be of interest to some the group. http://www.bbc.co.uk/news/science-environment-12158718 Regards Alex...
18483
John/AF4EX
af4ex.radio
Oct 7, 2011 10:08 pm
Alex, Old news actually, describing an event observed by the NASA Fermi satellite on 14 Dec, 2009. But interesting never-the-less. Some folks are still...
18484
dylerware
Oct 7, 2011 11:43 pm
http://x264.nl/dump/9.0khz-2011-10-07-2336utc.jpg http://x264.nl/dump/9.0khz-2011-10-07-2342utc.jpg Anyone has a clue of what this is?...
18485
dylerware
Oct 7, 2011 11:51 pm
Add to that also 15.0 khz?? http://x264.nl/dump/9.0khz-15.0khz-2011-10-07-2349utc.jpg...
18486
Mark Dennison
marky26_uk
Oct 8, 2011 12:02 am
Hi, At 9khz it must be something local to you i would think, a sound sample of this signal would be nice as looking at the pic of the signal doesn't show ...
18487
dylerware
Oct 8, 2011 12:11 am
I have recorded a full perseus IQ .wav of the signal. If noone can identify it, i will upload the file (1.3GB)....
18488
Mark Dennison
marky26_uk
Oct 8, 2011 2:24 am
Hi, please do not upload 1.3GB of your signal as this would take forever to download, just a 5 second sample would suffice if it is a wave file, or you could...
18489
dylerware
Oct 8, 2011 9:12 am
It's a perseus output .wav file, which means the whole spectrum within a certain range, so you can retune again and again using differet modes and settings. In...
18490
EdgarBigDog
edgarbhmfa
Oct 8, 2011 7:10 pm
Hi Guys, here's my new You Tube video on the Atlas Sound model LT-72, 25v/70v line-to-speaker transformer, as I applied it to loop matching. My narration had...
18491
dylerware
Oct 8, 2011 7:54 pm
Now i get signals on: 9,10 and 15 khz: http://x264.nl/dump/vlf-0-30khz-2011-10-08-1947-very-clean.jpg ...
18492
VLF_Group@yahoogroups...
Oct 8, 2011 8:15 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the VLF_Group group. File : /Edgar's...
18493
G3XBM
rlapthorn
Oct 9, 2011 1:25 pm
An intermod product from 9kHz spaced MW broadcast stations in Europe?...
18494
Markus
df6nm
Oct 9, 2011 5:53 pm
... Yes, quite likely so. Unless the source is local, you might find a nighttime level increase. At one instance, Stefan DK7FC proved that his 9 kHz line was a...
18495
Pietro Occhi
peter_112722
Oct 11, 2011 3:40 pm
Hi all. I'm new in this wonderful world. I'm writing to this group as I'm interested in buying a kit to build a receiver to start receiving vlf signals. Could...
18496
Shawn
vlfkorgan1
Oct 11, 2011 3:43 pm
Pietro, The following website has a few kits/receivers you may be interested in trying: http://naturalradiolab.com/content/view/16/16/ Welcome to the group! ...
18497
schartzc45
Oct 12, 2011 1:26 am
Hi and new to your group. Question please; does any VLF member follow the Schumann resonance and can verify a frequency of 10 hertz? Thank you! Carl...
