Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk01.r1000.mx.aol.com (Internet Inbound) with ESMTP id CD17D3800008F; Mon, 25 Feb 2013 07:25:56 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1U9x6o-0004Rl-Fc for rs_out_1@blacksheep.org; Mon, 25 Feb 2013 12:24:42 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1U9x6n-0004Rc-AR for rsgb_lf_group@blacksheep.org; Mon, 25 Feb 2013 12:24:41 +0000 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1U9x6l-00054H-NZ for rsgb_lf_group@blacksheep.org; Mon, 25 Feb 2013 12:24:40 +0000 Received: from AGB ([2.26.29.5]) by mwinf5d10 with ME id 4cQE1l00c06dBU203cQEco; Mon, 25 Feb 2013 13:24:19 +0100 Message-ID: <550D96E6213544BCB4A78605E3024747@AGB> From: "Graham" To: Date: Mon, 25 Feb 2013 12:24:14 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: DSP app to multiply tone by 4 ? One thing that one of the PA (Dutch PA) stations spotted , is the 477 band is a handy divide by 4 from 1.9MHz .. and if you use two flip-flops , you can divide from 1.9 to 477 [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: cd16d8c2fb75309db133b7de4adb1391 Subject: LF: DSP app to multiply tone by 4 ? Content-Type: multipart/alternative; boundary="----=_NextPart_000_001E_01CE1353.061E85C0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, 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-global-disposition: G x-aol-sid: 3039ac1db405512b58540e96 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_001E_01CE1353.061E85C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable DSP app to multiply tone by 4 ? One thing that one of the PA (Dutch PA) stations spotted , is the 477=20 band is a handy divide by 4 from 1.9MHz .. and if you use two=20 flip-flops , you can divide from 1.9 to 477 Setting the rtty shift x 4 in fl digi 340 HZ , then gives 85 Hz at 477 A problem with the multi tone modes , unless its possible to write a = 'dsp' app , that multiplies the tones by 4 , single tone fixed amplitude in real-time or slightly after , That would open up all the (non linear) modes to 477 , X2 for 'logic' drive amps, X2 drive, and X4 for conventional on frequency amps ? Q Is this a possibility ? Could something be coded , that either looked like a sound card = , or took audio in , and outputted a multiplied frequency by 2 = or 4 =20 Could have delay as long as the delay was fixed ? G.. ------=_NextPart_000_001E_01CE1353.061E85C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
DSP app  to  multiply   tone  by  = 4 =20 ?
 
 
One thing that one of the PA (Dutch PA) stations spotted , is the = 477=20
band is a handy divide by 4 from 1.9MHz .. and if you use two =
flip-flops=20 , you can divide from 1.9 to 477

Setting the rtty shift x 4 in fl = digi=20 340 HZ , then gives 85 Hz at 477

A problem with the multi tone = modes ,=20 unless its possible to write a 'dsp'
app , that multiplies the tones = by 4 ,=20 single tone fixed amplitude in
real-time or slightly after ,
 
That would open up all the (non linear) modes
to 477 , X2 for = 'logic'=20 drive amps, X2 drive, and X4 for conventional on
frequency amps = ?
 
Q  Is this  a  possibility ?
 
Could  something  be coded  , that  = either =20 looked  like a  sound  card  , or  took  = audio in=20 , and outputted  a  multiplied  frequency =  by =20 2  or  4 
 
Could  have delay  as  long  as  the  = delay  was   fixed ?
 
G..
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