Hi Joseph, I've used these for quite a few different circuits. For a long time I used the 555 version ( Also with a T bypass cap across Vcc and ground ). I...
1609
Ned Lewis
ned2lewis
Apr 2, 2003 3:19 am
I could definitely be wrong, but my impression is that the shielding is what did it for you. Mine is not well shielded, but since the circuit itself is not ...
1610
Shawn E. Korgan
vlfkorgan1
Apr 2, 2003 5:18 am
Greetings, Last night into this Tuesday morning (April 1st) was a terrific time for VLF activity! There was very little in the way of the normally present VLF...
1611
Joseph DiVerdi
diverdi@...
Apr 2, 2003 5:26 am
Dear Ned, ... Yep, while the current available with an inductor-based system is really good this one isn't too shabby if it's tweaked. I've put some actual...
1612
Renato Romero
openlab@...
Apr 2, 2003 8:36 pm
www.vlf.it update: On the possible origin, propagation and detectability of ELECTROMAGNETIC PRECURSORS OF EARTHQUAKES by E. R. Mognaschi (upd Apr 2003) 73,...
1613
SpaceWeather.com
swlist@...
Apr 2, 2003 10:03 pm
Space Weather News for April 2, 2003 http://www.spaceweather.com JUPITER: The giant planet Jupiter has been nearing the Beehive Cluster for more than a month....
1614
Herbert E. Plett
cachureos
Apr 3, 2003 1:57 am
... I enjoy it. Looking at the circuit on your site I think of a question: -- if I put an extra cap in the line from pin1 to the lower diode (say just below...
1615
Joseph DiVerdi
diverdi@...
Apr 3, 2003 4:39 am
... Hmmm, that's an interesting question and I must admit that I don't know the answer. Best regards, Joseph -- Joseph A. DiVerdi, Ph.D., M.B.A. ...
1616
Peter.Schmalkoke@...
petersch60
Apr 3, 2003 11:44 am
... That would make some kind of a DC insulated supply with the effective power transfer capacitance beeing the two caps in series and the effective audio ...
1617
Shawn E. Korgan
vlfkorgan1
Apr 4, 2003 5:21 am
Greetings, The whistlers are really flying right now here in Colorado! It's 5:18 UT 4/3/03. In the past four minutes I have heard at least seven whistlers ...
1618
shortfuse13@...
Apr 5, 2003 3:53 pm
Hi folks, name here is Myron and I'm new to this list. I'm interested in monitoring VLF and below. The only radio I have right now is an old Realistic DX-440...
1619
Joseph DiVerdi
diverdi@...
Apr 5, 2003 5:23 pm
At 7:06 PM -0600 4/4/03, shortfuse13@... wrote: <snip> ... <snip> Dear Myron, I labor under the situation of observing VLF and low HF within a few miles...
1620
shortfuse13@...
Apr 5, 2003 8:19 pm
Thanks for the information. I moved to this neighborhood without realizing the problems I would have to put up with having a radio station nearby. I get to be...
1621
mdennisond@...
marky26_uk
Apr 6, 2003 12:00 am
Hi Myron & VLFers, I too have a very close proximity radio station, simply by putting a cap (47pF) from the gate of my FET transistor to ground got rid of it...
1622
Alan Melia
Alan.Melia@...
Apr 6, 2003 12:07 am
Hi Myron, there could be several problems that you may be able to conquer without too much difficulty. As Joseph says it is possible to receive LF in the ...
1623
Joseph DiVerdi
diverdi@...
Apr 6, 2003 1:05 am
At 1:07 AM +0100 4/6/03, Alan Melia wrote: <snip> ... A hearty second to this comment by Alan. I am struggling with 60Hz line noise in my VLF signals....
1624
shortfuse13@...
Apr 6, 2003 8:46 pm
Thank you gentlemen for the great response, all of you have gave me great info to start with. I'm currently using the phone line wrapped around a large toroid...
1625
Alan Melia
Alan.Melia@...
Apr 6, 2003 10:56 pm
Hi agn, Myron. The MFJ tuner is probably alright if you want to listen to a specific frequency, like a BC station. It will also show an increase in noise, but...
1626
shortfuse13@...
Apr 7, 2003 1:39 am
I noticed that about the MFJ tuner increasing noise. I will probably try some of the passive methods used to monitor VLF with a sound card and a ground mounted...
1627
cotixtof
Apr 9, 2003 4:14 pm
I'm interested by thunder and lightning detections. Does someone has some schematics or drawings of such electronic detectors (and associated antenna)? xtof...
1628
Herbert E. Plett
cachureos
Apr 9, 2003 4:56 pm
check on the weather list of 1wire Dallas systems for 'lightning'. http://lists.dalsemi.com/search/search.html lots of info and hardware described, developed,...
1629
kc8spp
Apr 9, 2003 5:49 pm
The FCC has allocated 1750 meters (160 - 190 kHz) as a free experimental band - Part 15 Title 47 of FCC Rules. Also, 510 kHz is a 'free' frequency (some...
1630
kc8spp
Apr 9, 2003 5:52 pm
Hi, I have been a HAM for a couple of years, and have recently become interested in VLF. I purchased a prebuilt receiver from the 'Inspire' project, and hope I...
1631
Myrton
n1gke
Apr 9, 2003 6:45 pm
I'm game. Please email your schedule for testing and I will try to listen. I am very active in VLF and ULF listening here in Rhode Island. My hours of...
1632
Anthony Hogue
anthony_hogue
Apr 9, 2003 7:50 pm
I am interested, would you send me your schedule and frequencies. Thanks Anthony Florida hogue@... ... From: kc8spp To: VLF_Group@yahoogroups.com Sent:...
1633
Bill & Jean Hayes
hayes74us
Apr 10, 2003 3:06 pm
I am building a SSB transceiver kit to work on the 1750 meters (160 - 190 kHz) meter band this should be fun to experiment with, The limits are, not over 1...
1634
Johan Bodin
junkodyn
Apr 10, 2003 5:58 pm
Just in case you didn't know, there is a very active mail reflector for people interested in 1750 meter operation. To sub/unsub visit:...
1635
Bill Powell
wmhpowell
Apr 10, 2003 10:10 pm
I've had the ISA version of the Boltek StormTracker up and running for several years now: http://www.boltek.com/stracker.htm It is admittedly expensive and...
1636
W1EOF
w1eof@...
Apr 11, 2003 12:19 am
GMG - There is a very active email reflector of people who communicate on that band, and some others. More info: http://mailman.qth.net/mailman/listinfo/lowfer...
1637
Whagen6@...
Apr 11, 2003 12:19 am
What kit are you using to build your transciever? thanks, Bill Hagen...
