Return-Path: X-Spam-DCC: paranoid 1233; Body=3 Fuz1=3 Fuz2=3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u3EHwhPS020459 for ; Thu, 14 Apr 2016 19:58:43 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aqlTJ-0006CV-FP for rs_out_1@blacksheep.org; Thu, 14 Apr 2016 18:54:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aqlTJ-0006CM-5G for rsgb_lf_group@blacksheep.org; Thu, 14 Apr 2016 18:54:29 +0100 Received: from mail-vk0-x234.google.com ([2607:f8b0:400c:c05::234]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1aqlTG-0003hS-Mj for rsgb_lf_group@blacksheep.org; Thu, 14 Apr 2016 18:54:28 +0100 Received: by mail-vk0-x234.google.com with SMTP id n62so2859485vkb.0 for ; Thu, 14 Apr 2016 10:54:26 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to; bh=RM1yhBm/Bx55UUu7J7l3jwL6LSJHgyNXAynjjGfV/DY=; b=W0PrqNoLLl7InBSz/uRo6ofgPlyMI15aH9o2CZ5WBMgs0bsyYNcrC2jAnWLmf+LXRC DhdD4KKIpXmsFepIzTLXOSamKvpKpuXEIf0zfL08EWxzluyU8LajP9PucN3bySamZm0D /j8SUQL2iJgTEY7wXpWxeDFKyx/gbnkx9XTEyK0jtSEthuwlQJF0PQhrA9asOzu7Stnj lC7s7xnPO8yYQjsz9CXezBAMf2VwZ25BqHqAR6G68SjCnF5czwIVySzDQyKOrZjQkl8n 78C59lw22YTwa+5RcCI0bzut5bRmhcFeM1p4QCO6fyKh0gsEGVl7c0nqtn3VeTDdrtaW Biyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to; bh=RM1yhBm/Bx55UUu7J7l3jwL6LSJHgyNXAynjjGfV/DY=; b=iPbo2XCyPtXgXvPi3bs8skbq1/D/Lo0iyAMjbo8xrzcKrJfQ2h61aVbT8NgKovWIFt ZEplvZ0l0J6Gcxmmq6VV7h39paRqr3I6GAYfDfMQ2SDVSM6fi3pjbfvFrwUVivgG9dqZ GAR6kug//+FAJBCp2rb+RJCSwkqvAYwumJ7h5qn+FBqGQoZqdlZy631cGvEUPsIEKpbx UK5EI9PWr961CzGdj9L6dqdfl1AQ7kAy8cCN/1FX2hu7YvewG4ZiFDV9WIynS7aKvTw8 TKU0bxvS6rhTtj/lS066g4C94I47pKPpXh4AxLpraAtZHSh4SolcpMh3srl/eQ9g5NNr 1qkw== X-Gm-Message-State: AOPr4FUViDQ3Hjf424bPw9mqfFc9zSJr1mZ9pAHnQ12DuDPQrWCaWNcgJsGJs2gJsIcX2TehOLPHz1DEYUYb2Q== MIME-Version: 1.0 X-Received: by 10.159.38.16 with SMTP id 16mr8142479uag.87.1460656464458; Thu, 14 Apr 2016 10:54:24 -0700 (PDT) Received: by 10.159.41.69 with HTTP; Thu, 14 Apr 2016 10:54:24 -0700 (PDT) In-Reply-To: <570FD31D.5020204@freenet.de> References: <570FD31D.5020204@freenet.de> Date: Thu, 14 Apr 2016 18:54:24 +0100 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 69d86b33142413363dd56bd312139bf4 Subject: Re: LF: Weaver Modulator with Spectrum Lab Content-Type: multipart/alternative; boundary=001a113e5650b431ca05307595f6 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 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7712 --001a113e5650b431ca05307595f6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable That seems a very convoluted (!!) way of doing what is actually quite a simple process. Input low-pass filter, I/Q mix with a centre tone, low pass filter the output- and there's the baseband signal you need for upconversion to any band you want from LF to microwaves. It ought to be possible to do everything in a single DSPIC It would be great to do the first part of this http://www.g4jnt.com/ThirdMethodUpconverter.pdf in a single chip. Andy G4JNT On 14 April 2016 at 18:27, Wolfgang B=C3=BCscher wrote: > Hi Warren, > > It's not strictly the Weaver method but there is an SSB 'up-converter' > with I and Q outputs in SL. > It actually uses a forward and inverse FFT, and cos^2 windowing (with 50 > percent overlap) : > > http://www.qsl.net/dl4yhf/speclab/filters.htm#filter_as_iq_modulator > > All the best, > Wolf DL4YHF . > > > Am 14.04.2016 um 18:47 schrieb Warren Ziegler: > >> Hello the list... >> >> Has anyone attempted to do a Weaver modulator to generate a baseband >> ssb signal in Spectrum Laboratory? >> Looks like it should be possible... >> >> > > --001a113e5650b431ca05307595f6 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
That seems a very convoluted (!!) way of doing what is act= ually quite a simple process.
Input low-pass filter, =C2=A0I/Q mix with= a centre tone, low pass filter the output- and there's the baseband si= gnal you need for upconversion to any band you want from LF to microwaves.<= /div>

It ought to be possible to do everything in a sing= le DSPIC

It would be great to do the first part of= this=C2=A0http= ://www.g4jnt.com/ThirdMethodUpconverter.pdf in a single chip.

Andy =C2=A0G4JNT


On 14 April 2016 at 18:27, Wolfgang B= =C3=BCscher <dl4yhf@freenet.de> wrote:
= Hi Warren,

It's not strictly the Weaver method but there is an SSB 'up-convert= er' with I and Q outputs in SL.
It actually uses a forward and inverse FFT, and cos^2 windowing (with 50 pe= rcent overlap) :

http://www.qsl.net/dl4yhf/specla= b/filters.htm#filter_as_iq_modulator

All the best,
=C2=A0 Wolf DL4YHF .


Am 14.04.2016 um 18:47 schrieb Warren Ziegler:
Hello the list...

=C2=A0 =C2=A0Has anyone attempted to do a Weaver modulator to generate a ba= seband
ssb signal in Spectrum Laboratory?
=C2=A0 Looks like it should be possible...




--001a113e5650b431ca05307595f6--