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181. Re: VLF: Inspire VLF-3 receiver (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 06 Oct 2010 13:59:17 +0200
Hi Daniele, LF, Am 06.10.2010 12:34, schrieb Daniele Tincani: I don't want to annoy you and the LF/VLF group with all these detailed questions, anyway I noticed that bits/sample is set to 16, while m
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00098.html (17,236 bytes)

182. Re: LF: Re: Re: Variometer (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 20 Oct 2010 16:37:18 +0200
Yes. I've been in email contact with him (having built his LF converter in 2003) before some months and asked why he didn't at least stay at LF since there are no contests and no SSB and so. Here, th
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00107.html (13,646 bytes)

183. Re: VLF: VLF at different locations and QRN as a function of daytime (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 05 Oct 2010 11:52:37 +0200
Hi Daniele, OK, i will set up the usr file. But it is nothing special, since we want to display the sferics, we won't have a blanker and/or clipper and no filtering and no sample rate drift correctio
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00220.html (19,920 bytes)

184. Re: LF: SAQ in Heidelberg (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Fri, 29 Oct 2010 12:15:00 +0200
Now i have added a wav (audio) file of the SAQ message of last sunday. Very fine CW reception. Even the carrier during key-up was audible... I used a 300 Hz CW filter and a noiseblanker (15 dB trigge
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00231.html (10,187 bytes)

185. VLF: in DFCW-600 (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 27 Oct 2010 18:00:16 +0200
Dear VLF, i have created a google earth picture where my current VLF receptions in DFCW-600 (sri, just above 200 km) are displayed, so one can get an impression of the different locations, distances
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00251.html (8,343 bytes)

186. Re: LF: Alpha stations (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 26 Oct 2010 13:40:13 +0200
Hello Con, Thank you! The Alphas are currently off. You can check it on my VLF grabber if you want, it is running 24/7: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html There is a
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00256.html (10,217 bytes)

187. Re: VLF: Inspire VLF-3 receiver (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 05 Oct 2010 19:37:52 +0200
Hi Daniele, Am 05.10.2010 17:00, schrieb Daniele Tincani: My reasoning is: I'm pretty sure :-) that I have hum at home affecting reception below 10KHz. Attached you find an usr file. Just let it run
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00287.html (12,630 bytes)

188. Re: VLF: DK7FC's 8th VLF kite experiment (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Fri, 22 Oct 2010 18:59:27 +0200
Dear VLF, Its not an easy decision but i will start tomorrow, saturday 23. october.  I want to start at 6 UTC but maybe it will be later due to the low wind. The wind might be to low in the early mor
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00300.html (12,964 bytes)

189. VLF: 8th experiment perhaps next saturday (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 19 Oct 2010 15:24:20 +0200
Dear VLF, The wind forecast for saturday is promising. Tomorrow i have to decide if i will make a VLF kite experiment this saturday, 23. October. 73, Stefan/DK7FC
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00334.html (9,573 bytes)

190. Re: VLF: Inspire VLF-3 receiver (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 06 Oct 2010 10:24:33 +0200
Hi Daniele, Yes, adjust the B slider. But the QRM/QRN must be totally visible on all frequencies. You can increase the input level but it's better to leave it as you usually have it. It is better to
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00354.html (15,026 bytes)

191. Re: LF: SAQ in Heidelberg (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Thu, 28 Oct 2010 18:45:53 +0200
I am pleased to have received SAQ the first time at all! Since i was not QRV on VLF last sunday i took a recording that is analysed now. SAQ is 40 dB above noise in 12 Hz FFT on my grabber. 73, Stefa
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00460.html (9,566 bytes)

192. Re: VLF: 8th experiment perhaps next saturday (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 19 Oct 2010 16:30:43 +0200
Hi Tony, Thank you. I am looking forward for that! Our distance is 1310 km (pic attached). Pse, what is your complete RX equipment? Do you have the settings for DFCW-600? Any noiseblanker and/or clip
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00500.html (10,786 bytes)

193. Re: LF: Back on 137.5kHz WSPR (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 19 Oct 2010 18:26:47 +0200
Hi Roger, Nice that you are back :-) I assume you will spend the night by reading the older LF mails? ;-) Yes, maybe this saturday but it's still uncertain, as usual... 73, Stefan Am 19.10.2010 16:54
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00564.html (9,478 bytes)

194. Re: VLF: Inspire VLF-3 receiver + samole rate drift problems (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 05 Oct 2010 19:17:26 +0200
Daniele, Warren, I don't know the inspire kit but my own grabber is a broad band receiver too and it seems to work. You can see on the 'wideband window' that i am receiving from 0...24 kHz without ex
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00586.html (15,780 bytes)

195. Re: LF: Re: TF? (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Thu, 28 Oct 2010 18:20:43 +0200
LF, Yesterday in the evening i've got the below message from Jay. After that i wrote an email to TF3HZ and told about VLF, gave him some links and asked if he would be interested to try an attempt to
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-10/msg00687.html (10,225 bytes)

196. Re: VLF: Long time transmission on earth antenna (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Thu, 18 Nov 2010 10:59:56 +0100
Dear VLF, All right now about the netbook supply. The netbook takes 1.1 A at 12.5V when running SpecLab! :-) Yesterday i successfully tested a new SpecLab version which allows longer DFCW element len
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-11/msg00017.html (13,613 bytes)

197. LF: VTX3 and/or NWC (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 23 Nov 2010 09:21:35 +0100
Dear group, Does someone know if the VLF transmitters VTX3 (19.3 kHz) and/or NWC (19.8 kHz) are locked to an atomic standard and can be used as a reference for SpecLab? What would be the settings wit
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-11/msg00109.html (8,230 bytes)

198. Re: LF: X in CT (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Mon, 29 Nov 2010 15:25:38 +0100
Mike and Markus, Congrats to the succesful TA work and the activity! Go on! :-) 73, Stefan/DK7FC
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-11/msg00127.html (10,778 bytes)

199. Re: LF: new VLF antenna at DK7FC (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 24 Nov 2010 21:09:13 +0100
...and the tiny twisted pair cable can be wound several times through a high mu ferroxube core! Attached a photo of the new antenna, in about 30m above GND at the university of Heidelberg 73, Stefan
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-11/msg00174.html (9,442 bytes)

200. LF: new VLF antenna at DK7FC (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 24 Nov 2010 20:51:29 +0100
Dear VLF, Full of euphorism i want to tell you about my new VLF RX antenna. You know my active antenna for VLF which is in use at my grabber: http://www.iup.uni-heidelberg.de/schaefer_vlf/8,97kHz%20a
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-11/msg00246.html (11,576 bytes)


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