Return-Path: Received: from rly-da09.mx.aol.com (rly-da09.mail.aol.com [172.19.129.83]) by air-da09.mail.aol.com (v121_r4.4) with ESMTP id MAILINDA092-a90495f7ee213b; Sat, 03 Jan 2009 10:06:17 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-da09.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDA098-a90495f7ee213b; Sat, 03 Jan 2009 10:06:13 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LJ84J-0004Ez-Gm for rs_out_1@blacksheep.org; Sat, 03 Jan 2009 15:05:39 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LJ84I-0004Eq-Rg for rsgb_lf_group@blacksheep.org; Sat, 03 Jan 2009 15:05:38 +0000 Received: from smtp3.wanadoo.co.uk ([193.252.22.156] helo=smtp3.freeserve.com) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LJ84H-00065g-7e for rsgb_lf_group@blacksheep.org; Sat, 03 Jan 2009 15:05:38 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3209.me.freeserve.com (SMTP Server) with ESMTP id 466D77000084 for ; Sat, 3 Jan 2009 16:05:31 +0100 (CET) Received: from AGB (unknown [91.109.50.239]) by mwinf3209.me.freeserve.com (SMTP Server) with SMTP id 09FFD7000082 for ; Sat, 3 Jan 2009 16:05:30 +0100 (CET) X-ME-UUID: 20090103150531410.09FFD7000082@mwinf3209.me.freeserve.com Message-ID: <800E0F535F2B4112AC2B0C59C202EB89@AGB> From: "Graham" To: References: <285F98C95F064AA8B5B6C559814191EC@ns94d01ae4d850> <495DC9D3.8030901@online.fr> <495E22D1.5030805@mail.ru> <495E33DC.3060502@mail.ru> <495E5832.9000009@mail.ru> <23CE077F929444939EDA62569064E6E9@AGB> <00f001c96d13$ed597980$0301a8c0@mal769a60aa920> <39FCEC3B8E014BF59CD4E7140D94B0BB@AGB> In-Reply-To: Date: Sat, 3 Jan 2009 15:05:30 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.5027.908 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.5027.908 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Low power olivia beacon 503 khz cent freq Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=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-IP: 193.82.116.20 Andy, Is the bfo on the ra1792 synthesised ? it is on my ra6790gm , but the trusty ra1778 (I have to say that or it develop some obscure fault) has a free tune 1.4 mhz bfo .so no good for hyper stable data ! .. but phase locked 1.4 mhz cio .....or if you have a pilot tone you can lock onto that ... follows 80 mtr am nicely and resolves as ssb .. cheating i know ! I tend to announce, dial frequency, mode -usb software marker frequency .. multipsk has a centre frequency mark which is handy ..! Hope the run was of intrest , Graham .. -------------------------------------------------- From: "Andy Talbot" Sent: Saturday, January 03, 2009 2:37 PM To: Subject: Re: LF: Re: Low power olivia beacon 503 khz cent freq > > If you have a radio with adjustable CW mode like most SDRs, and the > RA1792, its easier to use CW mode. Tune to the centre frequency of > interest, set the filter appropriately and the BFO to the decoders > preferred tone. > > For last nights listening, my SDR-IQ was set to CW mode, audio lower > freq 400Hz, upper freq 1600Hz, BFO 1000Hz > > (You can set arbitrary upper/lower linits on the SSB filter as well on > Spectravue), but guess who initially fell foul of seeing 503kHz > specified and assumed it meant the same as the JT65A freq the other > night. So, on seeing the tones not where they 'should' have been and > re-reading the email post... > > Must get round to writing a WSPR PIC routine for the AD9852 DDS > similar to my existing JT65 beacons. > > > Andy G4JNT > www.g4jnt.com > > > > 2009/1/3 Graham : >> Tx bandwidth and out of band signals , >> >> Well after picking up the toys from around the cot and tidying up the >> baby >> finally fell asleep ,silence finally ensued, a little familiarisation >> with >> the way the radio works may help, just because the rx dial displays a >> frequency out side the allocated band, doesn't actually mean the signal >> is >> out side the band .. its all to do with filter shape factor and the >> placement of the filter .... bit like dougle asking farther ted, are all >> the >> cows in the field the same size as his little plastic toy one... no >> dougle, >> this ones in your hand and those are far away , right ted came the quick >> reply .from a still confused dougle . >> >> >> -------------------------------------------------- >> From: "mal hamilton" >> Sent: Friday, January 02, 2009 7:54 PM >> To: >> Subject: LF: Re: Low power olivia beacon 503 khz cent freq >> >>> >>> OM >>> Your transmission is outside the band limit, spreading to 504.6 khz. >>> I can see why OFCOM are concerned about stricter control concerning data >>> mode bandwidth. >>> g3kev >>> >>> ----- Original Message ----- From: "Graham" >>> To: >>> Sent: Friday, January 02, 2009 6:30 PM >>> Subject: LF: Low power olivia beacon 503 khz cent freq >>> >>> >>>> Olivia 1 khz x 32 tone >>>> >>>> centre frequency 503 khz >>>> >>>> tx mode usb >>>> >>>> power 30 watts tune signal >>>> >>>> Will send for next few hours >>>> >>>> Reports welcome >>>> >>>> >>>> Graham >>>> >>>> >>>> >>>> >>> >>> >>> >>> -------------------------------------------------------------------------------- >>> >>> >>> >>> No virus found in this incoming message. >>> Checked by AVG - http://www.avg.com >>> Version: 8.0.176 / Virus Database: 270.10.2/1871 - Release Date: >>> 1/1/2009 >>> 5:01 PM >>> >>> >>> >> >> >> >>> >>> No virus found in this incoming message. >>> Checked by AVG - http://www.avg.com >>> Version: 8.0.176 / Virus Database: 270.10.2/1871 - Release Date: >>> 1/1/2009 >>> 17:01 >>> >> >> >> > > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.10.2/1872 - Release Date: 1/2/2009 > 13:10 >