Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 28299380000A2; Mon, 30 Jan 2012 13:32:12 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Rrvul-00041B-Gc for rs_out_1@blacksheep.org; Mon, 30 Jan 2012 18:25:15 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Rrvul-000412-45 for rsgb_lf_group@blacksheep.org; Mon, 30 Jan 2012 18:25:15 +0000 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Rrvuk-00089n-2B for rsgb_lf_group@blacksheep.org; Mon, 30 Jan 2012 18:25:15 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id q0UIPCv4020707 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 30 Jan 2012 19:25:12 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q0UIPCrt025827; Mon, 30 Jan 2012 19:25:12 +0100 Message-ID: <4F26E06D.2000507@iup.uni-heidelberg.de> Date: Mon, 30 Jan 2012 19:24:45 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org CC: Paul , Mike Smith References: <4F246297.4020304@charter.net> <50DDDC5E26754BC284D529DCB4A1C2C3@White> <4F258CB5.2090105@charter.net> <4F25DA96.3080607@iup.uni-heidelberg.de> <4F25F3D0.70503@iup.uni-heidelberg.de> In-Reply-To: X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: WOLF, next step.. Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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: 0:2:417292288:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40cd4f26e22c0d6c X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Bill, Just downloaded WOLF at http://www.qsl.net/dl4yhf/wolf/index.html Looks very easy from the first view. No installation required, the program is < 1 MB, works at once! CPU usage below 1...2 % I set the samplerate to 24 kS/s and the center frequency to 8970 Hz. Works! Changed the phase reversal time from 0.1 s to 0.111482720178372 s (=1000/8970Hz) Seems to work. Will do a test on my >10 years old HP notebook that generated a many hours 8970.00000 Hz signal without a single phase glitch. First i'll determine the actual samplerate using SpecLab. First a PC-to-PC test, then from the fixed antenna. BTW i want to try a ferrite HV transformer from an old TV (called LOPT?) and see if i can make it to my home QTH in 1 km distance ;-) Let's see if it works. Have i misunderstood or forgotten something so far? 73, Stefan/DK7FC Am 30.01.2012 03:06, schrieb Bill de Carle: > At 08:35 PM 1/29/2012, Stefan DK7FC wrote: >> Thanks Bill, >> >> Many mails. I'm just answering your first one, pse QRX ;-) >> Can the WOLF10 program configured to generate a 8970 Hz audio output? > > I don't know about the WOLF10 program, but Stewart's original > command-line WOLF program can generate a .wav file at 8000 s/s with a > carrier frequency of 2990 Hz (I just tried it and it worked). If you > triple that frequency (should be easy) you'd have 8970 Hz and the > third harmonic phase changes should still be OK for decoding. Odd > BPSK harmonics decode successfully, even ones don't. > > 73, > Bill VE2IQ >