Return-Path: Received: from rly-de11.mx.aol.com (rly-de11.mail.aol.com [172.19.170.147]) by air-de05.mail.aol.com (v121_r5.5) with ESMTP id MAILINDE051-510499fcc253bf; Sat, 21 Feb 2009 04:41:07 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-de11.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDE111-510499fcc253bf; Sat, 21 Feb 2009 04:40:55 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LaoLq-0004ac-60 for rs_out_1@blacksheep.org; Sat, 21 Feb 2009 09:40:50 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LaoLp-0004aS-QV for rsgb_lf_group@blacksheep.org; Sat, 21 Feb 2009 09:40:49 +0000 Received: from fg-out-1718.google.com ([72.14.220.158]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LaoLo-0001zo-TG for rsgb_lf_group@blacksheep.org; Sat, 21 Feb 2009 09:40:49 +0000 Received: by fg-out-1718.google.com with SMTP id l27so1490759fgb.32 for ; Sat, 21 Feb 2009 01:40:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=OUeqAIHOTk6rNc1DNdae+fyUuj23OVwn1DYw3uxvlcQ=; b=dLAD2vM4eFw4ZRN7C2YmacUL3m+Eo+Inp11JjQTngdAlTEBICCB3EeRyBf0xjc1Xez tS4JgodGjX34yCzNjcphgMbkRVHIXsDXyrWxpfk9H43ZupD0Wcmq7vDwm1yzPa5iiWA1 EvGkzRgCyfi+819RqecgkX8T9PvxXrH8lwYx4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=xIc6ABwT/7LWqkEJoYY4GnHUAOilaXwoHuzx74fEu+sAgtYr1DwnD4knyCjgJ8hznj cP9hpVjjOwE2l2r/Jc3RghtSN87Y+pjUvBujW+oJyetgMdLxvFsCP/K/cG9ZLc5ZLds/ O/FybTo8bTOlSgcb/taqjRSqEI1ESVKW4BCp4= MIME-Version: 1.0 Received: by 10.223.118.15 with SMTP id t15mr2205182faq.101.1235209247205; Sat, 21 Feb 2009 01:40:47 -0800 (PST) Date: Sat, 21 Feb 2009 09:40:47 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Wanted - non-random PN sequence generator - so Off Topic it shouldn't be allowed here! Content-Type: text/plain; charset=ISO-8859-1 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d271.2 ; domain : googlemail.com DKIM : fail X-Mailer: Unknown (No Version) ...but if any mathematicians, number theorists or cryptographers should be reading this... I've just got a WSPR generating routine running on a PIC / AD9852 / GPS combination, but I'm looking for a half-decent way of generating a pseudo random Tx/Rx sequence with defined duty cycle that does not give the long(ish) consecutive runs of 0's or 1's that MUST ALWAYS occasionally be seen in a truly random sequence. In other words, the sequence needs to be bandpass filtered. Before I cop-out and just use a pre-generated set of lookup tables, take a look at http://www.g4jnt.com/WSPR_PN_Sequence.pdf for a fuller description of the mind-bender Andy G4JNT www.g4jnt.com