Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: dcc1: mailn 1182; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v5NCEer2023021 for ; Fri, 23 Jun 2017 14:14:41 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dONOz-00027S-Ht for rs_out_1@blacksheep.org; Fri, 23 Jun 2017 13:09:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dONOz-00027H-2S for rsgb_lf_group@blacksheep.org; Fri, 23 Jun 2017 13:09:29 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dONOv-0006qX-KM for rsgb_lf_group@blacksheep.org; Fri, 23 Jun 2017 13:09:27 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 4F83620A70 for ; Fri, 23 Jun 2017 14:09:23 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3wvHLT0SXhz10Hm for ; Fri, 23 Jun 2017 14:09:20 +0200 (CEST) Message-ID: <594D04F0.4000003@posteo.de> Date: Fri, 23 Jun 2017 14:09:20 +0200 From: DK7FC 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 References: In-Reply-To: X-Scan-Signature: 21e2055b299bd63ed331c37c8a3e15ca Subject: Re: LF: hunting IK1HGI on LF Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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 2.75 Status: O X-Status: X-Keywords: X-UID: 12058 Hi LF, It is a nice function to generate the frequency directly with that module. But for WSPR it can't be used. However it could be used for a LO frequency in an up-converter! I got good reception of IK1HGI in the last days. His frequency, or our frequency, seems to be accurate. Same applies for IW4DXW and IZ7SLZ. Smallest frequency deviations may be due to propagation!? DK7FC JN49IK Opera-32 correlation http://df6nm.bplaced.net/opera/opds.zip date time call distance frequency bandwidth snr correlation 2017-06-23 05:36:47 IK1HGI 449km 137493.000Hz 2mHz -44.4dBOp 93% 17.1dB 2017-06-23 05:02:05 IK1HGI 449km 137493.000Hz 2mHz -44.3dBOp 100% 16.7dB 2017-06-23 04:27:24 IK1HGI 449km 137493.000Hz 2mHz -47.2dBOp 91% 15.4dB 2017-06-23 02:43:22 IK1HGI 449km 137493.000Hz 1mHz -51.9dBOp 100% 18.4dB 2017-06-22 05:37:20 IW4DXW 563km 137517.001Hz 2mHz -47.9dBOp 91% 16.8dB 2017-06-22 04:37:19 IW4DXW 563km 137517.000Hz 9mHz -44.5dBOp 92% 18.4dB 2017-06-22 03:37:19 IW4DXW 563km 137517.000Hz 9mHz -46.0dBOp 92% 16.6dB 2017-06-22 02:37:20 IW4DXW 563km 137517.000Hz 10mHz -42.0dBOp 91% 20.1dB 2017-06-22 01:37:20 IW4DXW 563km 137517.000Hz 10mHz -42.1dBOp 91% 19.6dB 2017-06-22 00:37:19 IW4DXW 563km 137517.000Hz 5mHz -42.1dBOp 92% 19.8dB 2017-06-21 23:37:19 IW4DXW 563km 137517.000Hz 10mHz -41.8dBOp 92% 20.3dB 2017-06-21 22:37:19 IW4DXW 563km 137517.001Hz 4mHz -40.4dBOp 92% 20.2dB 2017-06-21 05:37:19 IW4DXW 563km 137517.000Hz 3mHz -34.1dBOp 92% 19.2dB 2017-06-21 04:37:19 IW4DXW 563km 137517.000Hz 3mHz -31.7dBOp 92% 20.1dB 2017-06-21 03:37:19 IW4DXW 563km 137517.000Hz 3mHz -34.2dBOp 92% 19.1dB 2017-06-21 02:37:19 IW4DXW 563km 137517.000Hz 3mHz -36.2dBOp 92% 19.5dB 2017-06-21 01:37:19 IW4DXW 563km 137517.000Hz 2mHz -37.1dBOp 92% 19.8dB 2017-06-21 00:37:19 IW4DXW 563km 137517.000Hz 3mHz -37.0dBOp 92% 19.4dB 2017-06-21 00:03:11 IW4DXW 563km 137517.000Hz 3mHz -35.9dBOp 100% 19.7dB 2017-06-20 23:20:33 G3XDV 682km 137470.029Hz 16mHz -44.2dBOp 100% 16.9dB 2017-06-20 08:17:41 IK1HGI 449km 137493.000Hz 2mHz -45.8dBOp 93% 17.9dB 2017-06-20 07:43:00 IK1HGI 449km 137493.000Hz 2mHz -42.4dBOp 100% 18.3dB 2017-06-20 07:08:18 IK1HGI 449km 137493.000Hz 2mHz -45.5dBOp 95% 15.9dB 2017-06-20 05:24:14 IK1HGI 449km 137493.000Hz 4mHz -44.6dBOp 100% 16.3dB 2017-06-20 04:49:34 IK1HGI 449km 137493.000Hz 3mHz -42.8dBOp 99% 18.5dB 2017-06-20 03:40:12 IK1HGI 449km 137492.999Hz 8mHz -41.8dBOp 100% 15.3dB 2017-06-20 03:05:31 IK1HGI 449km 137493.000Hz 2mHz -45.3dBOp 97% 15.9dB 2017-06-20 02:30:51 IK1HGI 449km 137493.000Hz 2mHz -40.4dBOp 100% 18.7dB 2017-06-20 01:56:09 IK1HGI 449km 137493.000Hz 3mHz -44.5dBOp 89% 17.4dB 2017-06-20 01:21:28 IK1HGI 449km 137493.000Hz 7mHz -38.7dBOp 100% 19.9dB 2017-06-20 00:46:47 IK1HGI 449km 137492.999Hz 4mHz -41.4dBOp 93% 18.2dB 2017-06-20 00:33:24 IZ7SLZ 1159km 137494.999Hz 4mHz -30.7dBOp 100% 19.7dB 2017-06-20 00:12:05 IK1HGI 449km 137492.999Hz 4mHz -44.5dBOp 100% 16.8dB 2017-06-19 23:43:24 IZ7SLZ 1159km 137495.000Hz 4mHz -36.8dBOp 100% 20.5dB 73, Stefan Am 23.06.2017 11:24, schrieb Domenico IZ7SLZ: > Hi LF, > > in these days, Tony IK1HGI from JN45jj, is transmitting some (not > announced) EbNaut test message on LF and he is active in op32. He is > using a very stable exciter formed by a GPS Neo-7 which time port TP5 > has been reprogrammed to output directly the operating frequency (i.e. > 137493,000 Hz). > > I invite all interested LF operators to try this solution becouse it's > cheap, easy to built and it works ! > Riccardo IW4DXW, who had this idea, is writing some > post to the group with his indications on buffering the TP5 signal, > obtain a BPSK and ASK modulator, reprogramming the GPS parameters. > > > Erp transmitted by Tony is low due to very short antenna placed on his > balcon, short cap-hat wires, poor ground system and low power output > (around 70 W) with some mismatching. > > So catching his signal is a challenge for me in JN80nu (abt. 920 km). > > Last night i saw some traces of his signal on my opds Spectrum Lab > waterfall but no opera detections were possibile even by reducing > thresholds in opds.ini. > > I have also used Paul Nicholson's vlfrx-tools programs to record the > audio coming from LF receiver. Then i tried this morning to obtain 4 > hour-long FFT centered on IK1HGI qrg after filtering and blanking > the signal. > > I got an evident peak that i'm almost sure that comes from Tony. > > These are the commands that i have used (i'm new on vlfrx-tools so i > hope do not make big mistakes): > > vtread -v -T2017-06-22_23:40,+16000 /media/iz7slz/Storage/ | > vtfilter -v -h bp,f=1500,w=2000 | > vtblank -v -a2 -d0 -t10 | > vtnspec -v -f 1493 -w0.02 -r6.25e-5 > spectrum.dat > > that vtblank settings comes out after many attempts. > > 73, Domenico IZ7SLZ > > > >