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161. LF: Re: 8270Hz - on air (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Sun, 3 May 2015 12:07:24 +0200
Hi Iban, sorry I hadn't sent the first announcement to the group. I had intended to send only a 2 hour test carrier for Uwe DJ8WX, but as things were going so well I ended up doing a 6 hour transmiss
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00014.html (10,735 bytes)

162. Re: LF: Re: Re: 8270Hz - on air (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Sun, 3 May 2015 12:12:11 +0200
Hi Paul, thanks for the explanation, perfectly understood. I was actually a bit worried as I tend to regard the Todmorden spectrogram as a kind of gold standard for sensitivity and accuracy. Well, th
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00015.html (10,670 bytes)

163. LF: VO1NA opds-32 (score: 1)
Author: Markus Vester <[email protected]>
Date: Sat, 9 May 2015 13:26:20 -0400
Hi Joe, eight opds detections in a row last night - quite a nice signal again! I was wondering why the frequency display went up a couple of mHz during wee hours. The zoomed image https://dl.dropboxu
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00047.html (11,001 bytes)

164. Re: LF: RE: FZ-02-B mechanical filter input matching (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 20 May 2015 14:58:00 -0400
Hi Stefan, I'd suggest the following test: 1. with the current circuitry, measure the background noise floor on a quiet day with little QRN (ie. not now ;-) 2. temporarily disable the BF981 stage, by
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00148.html (11,602 bytes)

165. Re: LF: EA5DOM vertical (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 20 May 2015 16:47:09 -0400
Hi Luis, Stefan, just a short comment: I would second every bit of Stefan's advice, this is really the way to go. Antenna capacitance will not be much different between erecting the same vertical on
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00156.html (15,508 bytes)

166. Re: LF: EA5DOM <crazy> vertical (score: 1)
Author: Markus Vester <[email protected]>
Date: Thu, 21 May 2015 07:42:40 -0400
Hi Luis, I do have friends living on that yellow tower at 100m horizontal distance and 25m higer than my roof I envy you ;-) Sounds great for sub 9 kHz as well. PS: A fixed fishing line were a thin c
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00166.html (13,713 bytes)

167. Re: AW: LF: 630m OP8 (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Fri, 22 May 2015 09:44:30 +0200
Last night I pushed the antenna out again and ran MF opds-8 and WSPR. Traces from VO1NA were weakly visible in the spectrogram between about midnight and 2 UT, resulting in a single opds detection at
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00178.html (13,515 bytes)

168. Re: LF: 477 VK5CV de VK2XGJ Op8 690 mi -17 dB F:8% in Dapto, Austealia with 25w (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Fri, 22 May 2015 19:52:48 +0200
Hi Graham, provide shortly a secondary , off-air decode to provide a time stamp. maybe this is not such a good idea. When the timestamp from a local decode is propagated over the Opera web link, all
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00181.html (12,180 bytes)

169. LF: False Decode or Real? - Opera vs opds (score: 1)
Author: Markus Vester <[email protected]>
Date: Sat, 23 May 2015 14:23:31 -0400
Hi Graham, OPDS makes use of Wolfs some what excellent spectrum software as DSP Spectrum Lab is used as the frontend for opds, the only signal processing done there is a straight high-resolution FFT
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00191.html (19,492 bytes)

170. Re: LF: False Decode or Real? - Opera vs opds (score: 1)
Author: Markus Vester <[email protected]>
Date: Sat, 23 May 2015 18:30:13 -0400
For the record, I should probably correct a couple of minor errors in my last post: The Opera software version used in the test was 1.5.4 (ie. the last one before dynamic), not 1.5.6. Scaling from Op
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00199.html (16,863 bytes)

171. Re: LF: WSPR-15 Transmission (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Mon, 25 May 2015 00:18:32 +0200
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2015-05-24 22:00 G4JNT 0.475810 -34 0 IO90iv 2 SP5XSB KO02ld 1540 76 2015-05-24 22:00 G4JNT 0.475810 -17 0 IO90iv 2 DF6NM JN59nj 899 96 73,
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00214.html (11,004 bytes)

172. Re: LF: 630M WSPR T/A - WSPR-15? (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Tue, 26 May 2015 02:19:54 +0200
Wolf, as far as I know the only way to separate them in the database seems to be sorting by frequency (which is not very useful otherwise). There is a peculiarity in that the hh:15 and hh:45 timestam
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00243.html (14,687 bytes)

173. Re: LF: 630M WSPR T/A - WSPR-15? (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Tue, 26 May 2015 02:26:02 +0200
correction: dial 474.2 kHz (I'll never get this right...) From: [email protected] Markus Vester Sent: Tuesday, May 26, 2015 2:19 AM To: [email protected] Subject: Re: LF: 630M WSPR T/A
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00244.html (15,719 bytes)

174. Re: LF: 630M WSPR T/A - WSPR-15? (score: 1)
Author: Markus Vester <[email protected]>
Date: Tue, 26 May 2015 12:56:23 -0400
Hi Wolf, that's exactly what I did too, with same results: wspr-2 running and uploading fine, no chance to test -15 due to lack of signals. But if signals had been present on both bands, wouldn't bot
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00259.html (16,195 bytes)

175. Re: LF: De F6CNI : WSPR Test using mobile on MF to night. (score: 1)
Author: Markus Vester <[email protected]>
Date: Tue, 26 May 2015 13:06:51 -0400
Great Andy, this is a wonderful experiment! If you could persuade yourself to drive on a highway while transmitting, would we be able to measure your speed using Doppler effect? Probably not using WS
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00260.html (15,299 bytes)

176. Re: LF: 630M WSPR T/A - WSPR-15? (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Wed, 27 May 2015 01:50:57 +0200
... like before, I am running two instances on the same WSPRX installation (in c:\Programme\wsprx\ on an XP machine). This seems to work flawlessly, with -2 and -15 decodes uploaded and interleaved c
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00269.html (17,983 bytes)

177. Re: LF: Small MF ferrite antenna games (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 27 May 2015 06:32:43 -0400
Yes Stefan, bring colour into your life ;-) Even after more than 10 years, I still sometimes enjoy just sitting and watching things roll by on the colour-RDF screen. With crossed loops and an E-field
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00277.html (13,889 bytes)

178. Re: LF: MF mobile ? (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Thu, 28 May 2015 01:23:50 +0200
have all the formulas in your mind :-) Yes Stefan, sure do... this is the kind of stuff I sometimes like to think about during my bike ride to work - about 70 minutes, twice a day ;-) Ok, no pocket
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00288.html (29,288 bytes)

179. Re: LF: Almost (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Sat, 30 May 2015 12:20:50 +0200
Looks like Stefan ran into a Loran line... but wait, Loran is no longer there in North America, and anyway we're on MF not LF. Mike any idea what is causing those spurs? https://dl.dropboxusercontent
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00326.html (12,442 bytes)

180. Re: LF: WSPR-15 stations monitoring (score: 1)
Author: "Markus Vester" <[email protected]>
Date: Sat, 30 May 2015 12:47:02 +0200
Hi Andy, from those around 2000km (Eastern and Northern Europe) to the next group of US ones at 5000km + That gap is also known as the Atlantic ocean ;-) Seriously, it would help if more stations fro
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-05/msg00327.html (38,234 bytes)


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