Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3A0A5380000A8; Sat, 24 Sep 2011 14:24:25 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R7Wss-0001XS-8X for rs_out_1@blacksheep.org; Sat, 24 Sep 2011 19:23:30 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R7Wsr-0001XJ-Mz for rsgb_lf_group@blacksheep.org; Sat, 24 Sep 2011 19:23:29 +0100 Received: from imr-da04.mx.aol.com ([205.188.105.146]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R7Wsp-0007QA-0M for rsgb_lf_group@blacksheep.org; Sat, 24 Sep 2011 19:23:29 +0100 Received: from mtaout-da03.r1000.mx.aol.com (mtaout-da03.r1000.mx.aol.com [172.29.51.131]) by imr-da04.mx.aol.com (8.14.1/8.14.1) with ESMTP id p8OINNOF029187 for ; Sat, 24 Sep 2011 14:23:23 -0400 Received: from White (nrbg-4dbe6df4.pool.mediaWays.net [77.190.109.244]) by mtaout-da03.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id 7EA4EE000184 for ; Sat, 24 Sep 2011 14:23:20 -0400 (EDT) Message-ID: <53FF802EC116491083F9B0DF00010AF1@White> From: "Markus Vester" To: "rsgb_lf_group" References: Date: Sat, 24 Sep 2011 20:23:04 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MimeOLE: Produced By Microsoft MimeOLE V12.0.1606 X-AOL-SCOLL-SCORE: 0:2:376779232:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: DK7FC, DF6NM, UA0AGC and very slow transmission on 137780 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0005_01CC7AF7.C3847390" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:431905152:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40d54e7e20597d03 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_0005_01CC7AF7.C3847390 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thanks a lot, Alex, for two reports in one - the traces on 137780 were = actually the one-hour dashes of my "M". Unlike for VLF, due to the frequency conversion in the receiver it is = not easily possible to distribute a "one-fits-all" SpecLab USR for LF. = In my case, the situation is further complicated by the dual-channel = colour-DF scheme, and the odd way I lock my RX samplerate to an = accidental (but deterministic) 876 Hz spur from the LO DDS. Here's an = excerpt from a recent exchange with VE7TIL on the topic: >> Scott, the slow SpecLab settings are fairly straightforward - I use = 11025 Hz samplerate, complex decimation by 768, FFT size 32768, and 600 = seconds per FFT. The center frequency and display offset will depend on = your receiver's precise LO frequency (watch out for DDS rounding = errors). Finally you will want to inject a known audio tone for = samplerate tracking (eg. GPS-derived 5 kHz), or alternatively 1-pps = pulses plus NMEA (which I haven't tried yet). Best wishes, Markus (DF6NM) =20 From: Alex K=20 Sent: Saturday, September 24, 2011 12:51 PM To: rsgb_lf_group=20 Subject: LF: DK7FC, DF6NM, UA0AGC and very slow transmission on 137780 Hello LF, Stefan, Markus! There are screenshots with signals DK7FC, DF6NM, UA0AGC and very slow = transmission on 137780. I would like to rx-experiment with such "QRSSSS" :) . Probably, someone = has approaching *.usr file?=EF=BB=BF 73 de rn3aus/Alex -------------------------------------------------------------------------= ------- ------=_NextPart_000_0005_01CC7AF7.C3847390 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Thanks a lot, Alex, for two reports in = one -=20 the traces on 137780 were actually the one-hour dashes of = my=20 "M".
 
Unlike for VLF, due = to the=20 frequency conversion in the receiver it is not easily possible=20 to distribute a "one-fits-all" SpecLab USR for = LF. In my case, the situation is further complicated by the = dual-channel=20 colour-DF scheme, and the odd way I lock my RX=20 samplerate to an accidental (but deterministic) 876 Hz spur from = the LO=20 DDS. Here's an excerpt from a recent exchange with VE7TIL on = the=20 topic:
 
>> Scott, the slow SpecLab = settings=20 are fairly straightforward - I use 11025 Hz samplerate, = complex=20 decimation by 768, FFT size 32768, and 600 seconds per=20 FFT. The center frequency and display offset will depend on = your=20 receiver's precise LO frequency (watch out for DDS rounding = errors).=20 Finally you will want to inject a known audio = tone for=20 samplerate tracking (eg. GPS-derived 5 = kHz), or alternatively=20 1-pps pulses plus NMEA (which I haven't tried yet).
 
Best = wishes,
Markus = (DF6NM)
 

 
From: Alex K
Sent: Saturday, September 24, 2011 12:51 PM
Subject: LF: DK7FC, DF6NM, UA0AGC and very slow transmission = on=20 137780


Hello LF, Stefan, Markus!
There are = screenshots=20 with signals DK7FC, DF6NM, UA0AGC and very slow transmission on = 137780.
I=20 would like to rx-experiment with such "QRSSSS" :) . Probably, someone = has=20 approaching *.usr file?=EF=BB=BF
73 de rn3aus/Alex
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