Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t8P9IJoG028328 for ; Fri, 25 Sep 2015 11:18:20 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZfP65-0003cA-OB for rs_out_1@blacksheep.org; Fri, 25 Sep 2015 10:15:17 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZfP65-0003c1-Cj for rsgb_lf_group@blacksheep.org; Fri, 25 Sep 2015 10:15:17 +0100 Received: from mail-wi0-f174.google.com ([209.85.212.174]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1ZfP4w-0006MQ-S6 for rsgb_lf_group@blacksheep.org; Fri, 25 Sep 2015 10:15:16 +0100 Received: by wicgb1 with SMTP id gb1so11599860wic.1 for ; Fri, 25 Sep 2015 02:13:51 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=l2WTL6HGDrEKCRn8C5Mn/piV1oJjKJuASABUgkEULIs=; b=Ui392z3rOyKEeVnRAdieXVWWvT1rMuTr3xSUOYNqpbzwaXJH+eBH8rQr6Bt7m3DpRd 6xeELNNGVB01lO8luAALPwhF/nukIYfqXB/dVd1waYTVMXKOIL22vLVefQqOTadawYFe yWog12VvAsyB+xQPSwsvxAJqlqpX2hIjchIRO/3NyByYq5krbzsi9FttJWSGUj3kIiGF Jhcl67TKlCG3pvXRDUqa+oloWxgctM83zdeddYXMXLN0GDNqC3Sr0ayfAlR/krgA+zlA 8ykMxO2xMPvMG6ud3TsJzostE4rW9yWw8UeAIeuIxB1tTjX2MvC40dYhR6pAf/7hS5o5 JBWw== MIME-Version: 1.0 X-Received: by 10.180.90.166 with SMTP id bx6mr2026095wib.93.1443172431237; Fri, 25 Sep 2015 02:13:51 -0700 (PDT) Received: by 10.28.47.212 with HTTP; Fri, 25 Sep 2015 02:13:51 -0700 (PDT) In-Reply-To: References: <0MNdxu-1Zl3vu0oLy-007AvH@mail.gmx.com> <5603CC31.2000401@posteo.de> <560508B4.6000303@posteo.de> Date: Fri, 25 Sep 2015 10:13:51 +0100 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 4a8faa6952847c1ec651f883b63fc053 Subject: Re: LF: First MF TA since a longer time Content-Type: multipart/alternative; boundary=f46d043bdf861d16c805208ec47d 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4137 --f46d043bdf861d16c805208ec47d Content-Type: text/plain; charset=UTF-8 -6dB in 2.5kHz is very audible This utility I wrote a while ago generates CW / audio tones in specified bandwidth to listen to, and allows you to put custom filters around the signal. http://www.g4jnt.com/SNDemo.exe (just ignore any security warnings and just run it, I promise it won't harm your machine ) You'll see that down to about -14dB S/n (2.5kHz) is just about detectable as an audio tone - although I doubt many even experienced OPs could read CW that low Andy G4JNT On 25 September 2015 at 10:00, Fausto Coletti wrote: > Hi Stefan, > > a wspr -6dB sgnal is audible ? > The question is this: with this condition and if necessary a bit more > power it is possible a cw qso? > > 73, Fausto IK4NMF > > > ----- Original Message ----- > > *From:* DK7FC > *To:* rsgb_lf_group@blacksheep.org > *Sent:* Friday, September 25, 2015 10:41 AM > *Subject:* Re: LF: First MF TA since a longer time > > Hi all, > > Last night there were excellent condx on 630m on the TA path! G8HUH, F5WK > and DK7FC managed to be decoded in above 5000 km in WSPR. > > I've got exceptional good SNR reports!: > > Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2015-09-25 > 04:52 DK7FC 0.475683 -23 0 JN49ik 1 WG2XKA FN33lq 5970 > 297 2015-09-25 04:32 DK7FC 0.475683 -16 0 JN49ik 1 > WD2XSH/17 FN42pb 5927 294 2015-09-25 04:32 DK7FC 0.475684 > -6 0 JN49ik 1 W1TAG/1 FN43sv 5789 296 2015-09-25 00:32 > DK7FC 0.475683 -5 0 JN49ik 1 TF3HZ HP94ad 2440 323 > -6 dB by W1TAG/1 means that many weaker stations could have made the path > as well, in that time slot! > > 73, Stefan > > Nessun virus nel messaggio. > Controllato da AVG - www.avg.com > Versione: 2015.0.6140 / Database dei virus: 4419/10695 - Data di rilascio: > 25/09/2015 > > --f46d043bdf861d16c805208ec47d Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
-6dB in 2.5kHz is very audible

This utility I wrote a while ago generates CW / audio tones in specified= bandwidth to listen to, and allows you to put custom filters around the si= gnal.=C2=A0=C2=A0 http://www.g4= jnt.com/SNDemo.exe=C2=A0=C2=A0 (just ignore any security warnings and j= ust run it, I promise it won't harm your machine )

=

You'll see that down to about -14dB S/n (2.5kHz) is= just about detectable as an audio tone - although=C2=A0I doubt=C2=A0many e= ven=C2=A0experienced OPs =C2=A0could read CW that low

<= div>Andy=C2=A0 G4JNT

<= br>
On 25 September 2015 at 10:00, Fausto Coletti= <faustocoletti@alice.it> wrote:
Hi Stefan,
=C2=A0
a wspr -6dB sgnal is audible ? =
The question is this: with this condit= ion and if=20 necessary a bit more power it is possible a cw qso?
=C2=A0
73, Fausto IK4NMF
=C2=A0
=C2=A0
----- Original Message -----
From:=20 DK7FC=20
Sent: Friday, September 25, 2015 10:41=20 AM
Subject: Re: LF: First MF TA since a=20 longer time

Hi all,

Last night there were excellent condx on 6= 30m=20 on the TA path! G8HUH, F5WK and DK7FC managed to be decoded in above 5000= km=20 in WSPR.

I've got exceptional good SNR reports!:

Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
=C2=A02015-09-25 04:52=C2=A0 =C2=A0DK7FC=C2=A0 =C2=A00.475683=C2=A0 =C2=A0-23=C2=A0 =C2=A00=C2=A0 =C2=A0JN49ik=C2=A0 =C2=A01=C2=A0 =C2=A0WG2XKA=C2=A0 =C2=A0FN33lq=C2=A0 =C2=A05970=C2=A0 =C2=A0297=C2=A0
=C2=A02015-09-25 04:32=C2=A0 =C2=A0DK7FC=C2=A0 =C2=A00.475683=C2=A0 =C2=A0-16=C2=A0 =C2=A00=C2=A0 =C2=A0JN49ik=C2=A0 =C2=A01=C2=A0 =C2=A0WD2XSH/17=C2=A0 =C2=A0FN42pb=C2=A0 =C2=A05927=C2=A0 =C2=A0294=C2=A0
=C2=A02015-09-25 04:32=C2=A0 =C2=A0DK7FC=C2=A0 =C2=A00.475684=C2=A0 =C2=A0-6=C2=A0 =C2=A00=C2=A0 =C2=A0JN49ik=C2=A0 =C2=A01=C2=A0 =C2=A0W1TAG/1=C2=A0 =C2=A0FN43sv=C2=A0 =C2=A05789=C2=A0 =C2=A0296=C2=A0
=C2=A02015-09-25 00:32=C2=A0 =C2=A0DK7FC=C2=A0 =C2=A00.475683=C2=A0 =C2=A0-5=C2=A0 =C2=A00=C2=A0 =C2=A0JN49ik=C2=A0 =C2=A01=C2=A0 =C2=A0TF3HZ=C2=A0 =C2=A0HP94ad=C2=A0 =C2=A02440=C2=A0 =C2=A0323=C2=A0

-6 d= B by W1TAG/1=20 means that many weaker stations could have made the path as well, in that= time=20 slot!

73, Stefan

Nessun virus nel=20 messaggio.
Controllato da AVG - www.avg.com
Versione: 2015.0.6140 / Database=20 dei virus: 4419/10695 - Data di rilascio:=20 25/09/2015


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