Hi, I've just uploaded my VLF loop receiver article from the June 1995 Lowdown issue. The heart of the preamp is the 70.7 volt audio line transformer. In 1995...
7578
Shawn K.
vlfkorgan1
Aug 4, 2007 12:45 am
All, I removed the off topic post from the group archives... I was just thinking it is the time of year to begin receiving good whistlers in Colorado. I...
7579
cheeseheadmn
Aug 5, 2007 3:34 am
Other than the dial, does anyone know what the differences between the Rycom 2174A and the 2174A-610 are? The pictures of a -610 I have seen have USB/LSB/AM...
7581
beat2kweb
Aug 5, 2007 9:51 pm
Hi, I have made improvements to my SLNB2K4 VLF Receiver. The schematic file is slnb2k4b.gif in the recently created SLNB2K4B folder with my older receiver...
7582
LI WHA HO WALLY
k5op
Aug 6, 2007 3:16 pm
I sure would like to see this receiver, but I can not seem to be able to recover it.... k5op beat2kweb <solBeat2000@...> wrote: Hi, I have made...
7583
LI WHA HO WALLY
k5op
Aug 6, 2007 3:18 pm
I sure would like to see this receiver, but I can not seem to be able to recover it.... k5op beat2kweb <solBeat2000@...> wrote: Hi, I have made...
7584
LI WHA HO WALLY
k5op
Aug 6, 2007 5:28 pm
jason, Thanks for the two replys, but you told me nothing... Wally LI WHA HO WALLY <k5op@...> wrote: I sure would like to see this receiver,...
7585
David Towers
radioman69uk
Aug 6, 2007 8:18 pm
Hi Li I am assuming that you cannot locate the files and I have taken the liberty to list the file address below ...
7586
beat2kweb
Aug 6, 2007 10:06 pm
Hi, What two replies are you talking about? I was working on my magnetometer project all afternoon so I could not send you anything during that time. David...
7587
Leonard J. Kerry
leonard_kerry@...
Aug 6, 2007 10:48 pm
Shawn, Have you noticed any degradation in the performance of your tree antenna over the last few years? Do you do any maintenance or install a new tap from...
7588
SEC.Products@...
Aug 7, 2007 2:28 am
Space Weather Message Code: ALTK06 Serial Number: 258 Issue Time: 2007 Aug 07 0226 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2007 Aug 07 0225 UTC ...
7589
jack trevor
jcktrevor
Aug 7, 2007 3:08 am
Hello , I want to listen haarp and submarines from istanbul. Which schematic help me. I cant carry antenna to garden from apartment fifth floor best , jack ......
7590
henksp
Aug 7, 2007 11:47 am
Did anyone try already to detect meteors on VLF? I will try to listen to the Perseids this weekend with my 1kHZ -10 kHz VLF receiver. Perseids start coming on...
7591
Christopher Gross
brunnis07649
Aug 7, 2007 12:16 pm
... Hi Doug, Actually I forget which version I have-- I don't have the receiver with me right now, but I'll be able to check the model # over the weekend. In...
7592
Lamp
lamparchy2004
Aug 7, 2007 3:49 pm
Now if you could post about how terrorists are going to use VLF to bring down bridges that would be on topic... -- lampajoo@......
7593
thierry alves
f6keo
Aug 7, 2007 6:06 pm
HellO Jack, concerning the HAARP I have no idea. For submarine and general VLF listening go to http://www.vlf.it Thierry. ...
7594
Christopher Gross
brunnis07649
Aug 7, 2007 9:57 pm
... I think HAARP only transmits on shortwave; I've heard them several times on various frequencies. Speaking of HAARP, their induction magnetometer has been...
7595
Shawn K.
vlfkorgan1
Aug 7, 2007 10:51 pm
Hi Len, I have not noticed any degraded performance in the tree antenna over time. However, I did pull out the nail about one year ago and replace it with a...
7596
Shawn K.
vlfkorgan1
Aug 7, 2007 10:52 pm
Hi Henk, I have attempted to monitor meteors via VLF however the results have been inconclusive. I recorded VLF audio during the Leonid meteor shower when...
7597
Christopher Gross
brunnis07649
Aug 7, 2007 11:22 pm
... My own experience has been the same-- I've been out with my handheld receiver during the Leonid and Taurid showers and I don't recall hearing anything...
7598
Gallagher, Dennis L. ...
galladl
Aug 8, 2007 12:51 pm
We flew a weather balloon to about 100,000 feet during a Leonids meteor shower a few years ago along with a video camera. The VLF audio was added to the video...
7599
cheeseheadmn
Aug 8, 2007 1:50 pm
... between the ... have seen ... these ... the ... much; ... Thanks Chris, I'll explain why I ask. I have a Sierra 303b selective level meter. It's...
7600
Bernhard
luckyscanner
Aug 8, 2007 1:51 pm
Never heard that before (neither the issue nor the sound of a meteor) but it is interesting. If we assume that VLF signals are generated by meteors, then how...
7601
mkarney19
Aug 8, 2007 1:59 pm
Here is the link to an article that details a study done on the VLF signature of meteors: http://leonid.arc.nasa.gov/MS025.pdf. This study was done in 1999 and...
7602
bob71741
Aug 8, 2007 8:38 pm
For some reason, the link for the PDF file does not take you there; I uploaded MS025.pdf to the files section....
7603
Christopher Gross
brunnis07649
Aug 9, 2007 12:51 am
... The URL had a period at the end. :-) I'm starting to look through the PDF, and I think it will be a great help in sorting out the differences between...
7604
beat2kweb
Aug 9, 2007 12:39 pm
Hi, I have posted the frequency response of my receiver up to 40Khz. Here is a link to the picture of the response and it is measured40k.gif ...
7605
beat2kweb
Aug 9, 2007 12:58 pm
... kHz ... maximum ... Hi, I will try to listen for them with my E-Field receiver. The lightning spherics is getting very intense and they are almost drowning...
7606
henksp
Aug 9, 2007 4:43 pm
Mark, Chris, Jason and all, Looking at the figure 2b in MS025.pdf in the Files section, it shows that frequency peaks for the Leonids at 1000 Hz. That is...
7607
henksp
Aug 11, 2007 7:43 am
Hai all, This early morning (5 AM local time) I might have detected a few Perseids. It was cloudy so I could not confirm visually. It was hard to distinguish...
