Hi John thanks for the reply. In the past i saw somewhere ...a big ferrite , such as these Telefunken , used for ULF and ELF i think using a active antenna in...
10490
Ken Sejkora
quickhatch44
Nov 1, 2008 9:26 am
Thanks for the insight, Alan. I've always known my longwire wasn't optimum for VLF, and didn't much care. I only use it for VLF as a matter of convenience,...
10491
Donald Rice
fnddr
Nov 1, 2008 11:27 am
I think SPIDR allows filtering by date and location. They keep playing with the interface so you would have to try it and see what the current abilities are. ...
10492
John
af4ex.radio
Nov 1, 2008 1:05 pm
... In addition to using active antennas, we all tend to use Wolf Buescher's SpecLab program to view the signals. This is an "audio" spectrogram program which...
10493
rinus nienhuis
eyesandears2002
Nov 1, 2008 2:34 pm
John Again, many thanks for your help i will checkout SpecLab and the info on the links you gave Lots of friendly and helping people over here regards rinus ...
10494
Tom Becker
b19063
Nov 1, 2008 4:59 pm
http://www.thebostonchannel.com/multimedia/m/21213113/dog_s_ear_emits_radio_signals.htm Look at this audio, guys. A dog emits ~5500Hz FSK from its right ear. ...
10495
Edgar
edgarbhmfa
Nov 1, 2008 5:41 pm
... http://www.thebostonchannel.com/multimedia/m/21213113/dog_s_ear_emits_radio_signals.htm ... Hi Guys, I've seen this written about before. I Googled "ear ...
10496
John
af4ex.radio
Nov 1, 2008 5:54 pm
... I ran Speclab while running the video and noted several tones when they probed the doggy's ear, the strongest at 5400Hz, with at least 3 subtones at...
10497
Tom Becker
b19063
Nov 1, 2008 6:17 pm
Here are my captures. Downward FSK is present in the last two, ISTM. Otoacoustic emissions (sounds generated by the ear) are suspected, by some, to be the...
10498
Tom Becker
b19063
Nov 1, 2008 6:56 pm
FWIW, I've requested the raw audio from the reporter. Tom...
10499
Mark
marky26_uk
Nov 1, 2008 6:59 pm
Hi all, Whistlers here in Sheffield, UK 19:00 UTC About 2-3 per minute, strength 2 out of 5. Mark...
10500
John
af4ex.radio
Nov 1, 2008 7:24 pm
... just saw and heard a strong whistler on Renato's live feed too. John/AF4EX...
10501
Alan Melia
g3nyk
Nov 1, 2008 8:00 pm
Hi yes this was written up (Sci Am ?? or New Scientist) some time ago, Apparently the small hairs of the cochlea(?) are like a comb of resonant reeds....this...
10502
Gary Woods
gaxlobs
Nov 1, 2008 8:18 pm
... So, if I can find the tickler coil and twist it a bit, the tinnitis will stop? Haven't tried it yet, but I'm wondering if I can plan an audio generator...
10503
Wolf (DL4YHF)
dl4yhf
Nov 1, 2008 8:53 pm
Also occasional whistlers on Renato's stream. But too late for me to get the "Bielefeld" stream online.. Cheers, Wolf . (Anyone out there also taking part in...
10504
Ernst D. Schmitter
erni051
Nov 1, 2008 9:05 pm
A lot of loud tweeks but no whistlers up to now here (52N 8E). Regards, Ernst...
10505
Tom Becker
b19063
Nov 1, 2008 9:23 pm
... I have had no success with that technique to quantify my Hum, but others say that they have identified theirs that way. While tinnitus and The Hum are not...
10506
davep@...
oddjob1947
Nov 2, 2008 12:09 am
... Might be interesting to visit the web sites of both and see what a site search turns up?? best dwp...
10507
MarkD
marky26_uk
Nov 2, 2008 1:49 am
Hi Wolf & all, Yes the whistlers really died off after my post, I would like to stop posting when activity happens as sods law really seems to have a big...
10508
Hogue
anthony_hogue
Nov 2, 2008 3:38 am
I listened and they sounded great here; also I heard then on all the Vlf sites some loud and some I just faintly heard. I checked the fellows VLF here in Cape...
10509
Rui Geraldes
rui_geraldes
Nov 2, 2008 8:21 am
Hi all, I find that my PC sound card have an non linear response as you can see in the picture (sound_card _noise_figure.jpg)I publish on the files area. Any...
10510
Walter
karula4711
Nov 2, 2008 9:00 am
Rui, this picture doesn't demonstrate any nonlinearity. But I see what you mean. Short circuit the input of your sound card with a piece of wire as short as...
10511
Wolf (DL4YHF)
dl4yhf
Nov 2, 2008 9:02 am
Hello Rui, On first sight, I wouldn't be too alarmed by this. The signal looks similar to many "onboard" soundcards I used; since the signal level is very low....
10512
Walter
karula4711
Nov 2, 2008 11:10 am
... Wolf, do you think this to be some internal noise of the card? I have a similar signal here. Looks alike on all cards. Goes away when input is shorted....
10513
Peter Schmalkoke
peter.schmal...
Nov 2, 2008 1:21 pm
... You mean different cards with the same computer? In that case your spurious signal will probably originate from the computer's internals, in particular...
10514
Joel Gonzalez
kg4inu
Nov 2, 2008 5:54 pm
Hello everyone, I'm a new member to this group, but have been experimenting and enjoying VLF and below for years now. :) I built a simple compass magnetometer...
10515
Walter
karula4711
Nov 2, 2008 8:16 pm
Hi Joel, ... that's a 'oops page not found' error. Have a look into ulfelf group as well. That's the group down into ULF Walter...
10516
Walter
karula4711
Nov 2, 2008 8:21 pm
Hi Peter, ... Nope. This story has been here a couple of times now and I'm afraid I'll be punished for telling the same story over and over again. But in...
10517
beat2kweb
Nov 2, 2008 8:59 pm
Hi group, I have just recently powered up my vlf station for my winter monitering and i have discovered a new beacon on the air. I don't know where it is...
10518
Ernst D. Schmitter
erni051
Nov 2, 2008 9:02 pm
Yes, its coming in here loud and clear (Germany 52N 8E). Its assumed to be a French one (St Assise?). Regards, Ernst...
