Return-Path: Received: (qmail 6751 invoked from network); 5 May 2001 09:42:36 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by 10.226.25.101 with SMTP; 5 May 2001 09:42:36 -0000 Received: (qmail 20169 invoked from network); 5 May 2001 09:42:37 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 5 May 2001 09:42:37 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14vyUu-0006kj-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 05 May 2001 10:37:08 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from imo-m04.mx.aol.com ([64.12.136.7]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14vyUt-0006ke-00 for rsgb_lf_group@blacksheep.org; Sat, 05 May 2001 10:37:07 +0100 Received: from DL4YHF@aol.com by imo-m04.mx.aol.com (mail_out_v30.10.) id l.6b.13dab896 (4398) for ; Sat, 5 May 2001 05:36:02 -0400 (EDT) From: DL4YHF@aol.com Message-ID: <6b.13dab896.28252382@aol.com> Date: Sat, 5 May 2001 05:36:02 EDT Subject: LF: Re: g3aqc beacon image To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Mailer: AOL 6.0 for Windows DE sub 217 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit Hi Uwe and Laurie,

the reason why Uwe's nice picture of Laurie's transmission looks quite sharp
is simply because the FFT length used there is quite low. This gives nice
sharp edges of the DFCW signal, but also reduces the spectral resolution.
If you have to dig deep in the noise because you are on the other side of the
pond, you must use a higher FFT length to have a more smoothing effect (I
guess ARGO does something like that automatically when set to a "very slow
QRSS" mode).

So thanks for the picture Uwe, I'd like to know what settings you were using
when making the spectrogram (my own spectrograms are a little more "blurred"
if that's the proper word).

73's  Wolf  (DL4YHF; DF0WD)  JO42FD.