Comments on: CQ from SAQ VLF transmitter july 2007 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007 Blog and website of a Belgian ham radio operator who likes to build antennas and other projects. Fri, 09 Dec 2011 15:20:32 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: jean claude F6eju http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-58 jean claude F6eju Sun, 01 Feb 2009 10:41:51 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-58 Hi Joost I am comming again Hi. In fact I have made an pre amplifier and got better signals. You will find some pictures at: http://picasaweb.google.fr/La.galene/HamRadioF6EJU# Next time I hope to read SAQ in better condition. Yes I have proved to connect the ant to the sound card with spectrumlab, but the best result with a vertical HF antenna is obtained with the op27 pre Amp. Will do a loop with biggest wire diameter possible and abt 70 turns as Renato advice me , see vlf.it We keep in touch. Best 73's from the French riviera in jn33rv Jean Claude de f6eju Hi Joost

I am comming again Hi.

In fact I have made an pre amplifier and got better signals.
You will find some pictures at:
http://picasaweb.google.fr/La.galene/HamRadioF6EJU#

Next time I hope to read SAQ in better condition.

Yes I have proved to connect the ant to the sound card with spectrumlab, but the best result with a vertical HF antenna is obtained with the op27 pre Amp.

Will do a loop with biggest wire diameter possible and abt 70 turns as Renato advice me , see vlf.it

We keep in touch.

Best 73′s from the French riviera in jn33rv

Jean Claude de f6eju

]]> By: Joost http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-57 Joost Sun, 18 Jan 2009 11:29:35 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-57 Hi Jean Claude, I usualy post the replies on the comments here to benefit everyone. Have you ever tried it with an antenna in the input of your soundcard ? I have also built several years ago a BBB4 vlf receiver. You can barely call it a receiver :-) It is some kind of active probe with a fet amp. Look in Google for Steve McGreevy. Joost (who is now attacked by my youngest daughter, she wants to type someyhing on the keyboard) Hi Jean Claude,
I usualy post the replies on the comments here to benefit everyone.
Have you ever tried it with an antenna in the input of your soundcard ?
I have also built several years ago a BBB4 vlf receiver. You can barely call it a receiver :-) It is some kind of active probe with a fet amp. Look in Google for Steve McGreevy.

Joost (who is now attacked by my youngest daughter, she wants to type someyhing on the keyboard)

]]> By: Jean Claude http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-55 Jean Claude Sat, 17 Jan 2009 12:55:12 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-55 Thanks Joost for your reply that I found today " 17 of January 2009" Hi Have made some little progress . :) Will be happy to exchange ideas Best 73 f6eju jean claude la.galene"at"gmail.com Thanks Joost for your reply that I found today ” 17 of January 2009″ Hi
Have made some little progress . :)
Will be happy to exchange ideas
Best 73
f6eju
jean claude la.galene”at”gmail.com

]]> By: Joost http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-48 Joost Thu, 25 Dec 2008 10:40:53 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-48 Bonjour Jean Claude, I have a Datong VLF converter but it seems that it has too much gain on the input, so big antennas are no good. But to be honest : the best results I achived was with the 24 turn loop in the summer. In the winter the signals seems much weaker to me.... Maybe you could find more/better info on www.vlf.it On my Youtube movie all the other VLF signals are 9+20, but SAQ hardly moves the needle from the s-meter. The antenna was a 1 turn loop from 14 by 2 m. With a potentiometer in the antenna line to reduce overloading. Nice pictures on Picase :-) 73 Joost Bonjour Jean Claude,
I have a Datong VLF converter but it seems that it has too much gain on the input, so big antennas are no good. But to be honest : the best results I achived was with the 24 turn loop in the summer. In the winter the signals seems much weaker to me….
Maybe you could find more/better info on http://www.vlf.it
On my Youtube movie all the other VLF signals are 9+20, but SAQ hardly moves the needle from the s-meter. The antenna was a 1 turn loop from 14 by 2 m. With a potentiometer in the antenna line to reduce overloading.

Nice pictures on Picase :-)
73 Joost

]]> By: F6eju jean claude http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-47 F6eju jean claude Wed, 24 Dec 2008 13:03:17 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-47 hello to all radio friends. I have an issue with my qth surrounded by the montagnes. The signal of SAQ are very weak even with a long wire of 25 m. Vertical antenna for the Hf gives better results but SAQ on 17.2 Khz is still pratically impossible to hear or see. I have made a converter working fine on others signals VLF, drawing on my pictures Picassa web site I am seeking for the best loop for such reception, advice welcome. Thanks. Best 73 F6eju http://picasaweb.google.fr/La.galene/RadioAmateurQRPPTunaTinF6EJU# hello to all radio friends.

I have an issue with my qth surrounded by the montagnes.
The signal of SAQ are very weak even with a long wire of 25 m.
Vertical antenna for the Hf gives better results but SAQ on 17.2 Khz is still pratically impossible to hear or see.
I have made a converter working fine on others signals VLF, drawing on my pictures Picassa web site
I am seeking for the best loop for such reception, advice welcome.
Thanks.
Best 73
F6eju
http://picasaweb.google.fr/La.galene/RadioAmateurQRPPTunaTinF6EJU#

]]> By: Joost http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-29 Joost Wed, 14 May 2008 05:56:57 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-29 Congrats, I had more luck back then, total cost was about $10 ~ 12. Don't oversize the antenna :-) I believe that I have a manual somewhere on my HD, if you need it, I'll mail it to you (can be found at http://www.mods.dk) Joost Congrats, I had more luck back then, total cost was about $10 ~ 12. Don’t oversize the antenna :-)
I believe that I have a manual somewhere on my HD, if you need it, I’ll mail it to you (can be found at http://www.mods.dk)

Joost

]]> By: James Hyslope http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-28 James Hyslope Wed, 14 May 2008 01:42:36 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-28 Just won the Bid at eBay for the Datong VLF. Cost me with shipping USD $84.45 and seller requires money order only. So is going to take awhile for me to receive :) Just won the Bid at eBay for the Datong VLF. Cost me with shipping USD $84.45 and seller requires money order only. So is going to take awhile for me to receive :)

]]> By: Joost http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-27 Joost Sun, 11 May 2008 09:02:23 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-27 Hi James, I have a schematic drawing of the converter, it uses an SO42P IC (obsolete I believe) if you like to build one yourself. But there are other converter designs one can build. You can order a new one at this site http://www.palomar-engineers.com/VLF/vlf.html (not cheap, but the Datongs I found after my auction on Ebay weren't too). On the other hand, you can always receive up to 22/24 kHz using your sound card and a piece of wire. For example http://freenet-homepage.de/dl4yhf/spectra1.html or http://www.visualizationsoftware.com/gram/gramdl.html. See also www.vlf.it for more on VLF Enjoy, Joost Hi James,
I have a schematic drawing of the converter, it uses an SO42P IC (obsolete I believe) if you like to build one yourself. But there are other converter designs one can build. You can order a new one at this site http://www.palomar-engineers.com/VLF/vlf.html (not cheap, but the Datongs I found after my auction on Ebay weren’t too).

On the other hand, you can always receive up to 22/24 kHz using your sound card and a piece of wire. For example http://freenet-homepage.de/dl4yhf/spectra1.html or http://www.visualizationsoftware.com/gram/gramdl.html.
See also http://www.vlf.it for more on VLF

Enjoy, Joost

]]> By: James Hyslope http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007/comment-page-1#comment-26 James Hyslope Sun, 11 May 2008 08:42:57 +0000 http://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007#comment-26 Saw your video on youtube (first). Sent me on a QUEST for the "Datong" converter :) Saw your video on youtube (first). Sent me on a QUEST for the “Datong” converter :)

]]>