Return-Path: Received: from mtain-di02.r1000.mx.aol.com (mtain-di02.r1000.mx.aol.com [172.29.64.6]) by air-mb06.mail.aol.com (v128.1) with ESMTP id MAILINMB063-a7664bbd18122a2; Wed, 07 Apr 2010 19:41:06 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-di02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 48A15380000A7; Wed, 7 Apr 2010 19:41:04 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Nzeqw-0000gW-3G for rs_out_1@blacksheep.org; Thu, 08 Apr 2010 00:40:10 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Nzeqv-0000gN-Ja for rsgb_lf_group@blacksheep.org; Thu, 08 Apr 2010 00:40:09 +0100 Received: from web28102.mail.ukl.yahoo.com ([217.146.182.122]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1Nzeqv-0007eA-Dg for rsgb_lf_group@blacksheep.org; Thu, 08 Apr 2010 00:40:09 +0100 Received: (qmail 94174 invoked by uid 60001); 7 Apr 2010 23:40:03 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1270683603; bh=ExXs92G4D/G06K6m5d9T9pSx7RvKnkH5cs9l0iGhqhs=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=Uw6xralCIIP2DjvI9cP5wb0iSoBfbNlQM6ZTBK2wIYxN2+cSI9w74blNRv4Q2MhTAO1kHsV+T39HY8NF1c/1IeBgx5hA2XGW44/Ml5NljaNHyW+sLfSiKlg9mdLxfPvw3/AxM602Yu6gV2K1RvQFp1vlCOtLUZsgfR1I1MdGwoc= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=fhiYdPCFba3o2j4ISmD+KwLx5swnMjHOOa9nsNVuWGkqVvj4aYcZIzccnxaRSl0kC5T6aVKDJxkD3ksDeBCec3Dbaj/hlZOazrvsXq85UaW7LRb1+M/EGrU4RZko0gZAzvf2sRVE1F2x/2/m6FFZj5BnsuwsDeRLpv12Gb9pLV0=; Message-ID: <178117.93786.qm@web28102.mail.ukl.yahoo.com> X-YMail-OSG: ZemhPbAVM1lho8zXbI8abYKn8yOgp2zlFD3ONyZSQgYPoD3 YSbzJ9XHgGeMB6ltfmKfmGHezgsqGl2.nqfA8zbIOHICxn8Xt70tPhsS4PUe BYXuWXgnjAwaBCoZdfUDkbMWQEodM._X9v1fRArC7w.YHnX2B5e329mM8YoT R4qx0h6NnPISPr4vvJsiPx4rqwZ1_lbSuXVN9ThUN1vvpiuSXFZgOW1DFeJb 8uL7zS5PNa55qHCB.0N0jek2iqsOX9Jdedpq9AgTZxAci1f9h Received: from [86.147.176.209] by web28102.mail.ukl.yahoo.com via HTTP; Wed, 07 Apr 2010 23:40:02 GMT X-Mailer: YahooMailClassic/10.0.8 YahooMailWebService/0.8.100.260964 Date: Wed, 7 Apr 2010 23:40:02 +0000 (GMT) From: M0FMT To: rsgb_lf_group@blacksheep.org In-Reply-To: MIME-Version: 1.0 DomainKey-Status: good (testing) Subject: Re: LF: WSPR without an SSB TRX ? Content-Type: multipart/alternative; boundary="0-403748375-1270683602=:93786" 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=HTML_MESSAGE 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-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d232.1 ; domain : yahoo.co.uk DKIM : pass x-aol-sid: 3039ac1d40064bbd1810796a X-AOL-IP: 193.82.116.20 --0-403748375-1270683602=:93786 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hi Jim =A0 Sorry I missed the that mail I guess. Quickly looking at the G4JNT pdf fil= e the circuit is basically the same as the Softrock TX in essences.=20 The reason I suggested Softrock is that it is a kit immediately available= and can be put together quickly without having to make up all CCT board= or source all the components individually which makes it a "Surefire"=A0s= olution. =A0 I will be honest I have not made a Softrock TRX for 500 only for 40/30m st= andard kit. I have other solutions i.e a couple of SSB TRX available. I=A0= and have=A0built=A0a transverter for 500 but not got it working so far. =A0 I regularly use=A0the RX part=A0of my Softrock TRX for 30, 40m and 80m and= can convert 500kc/s to the bottom end of 80m but to be perfectly honest= I am not that enamoured with WSPR but just wanted a nose around. =A0 I always thought that WSPR phase shift modulation had to be=A0linearly amp= lified thinking about it now I don't know why=A0I thought that.=A0 73 es GL petefmt --- On Thu, 8/4/10, James Moritz wrote: From: James Moritz Subject: Re: LF: WSPR without an SSB TRX ? To: rsgb_lf_group@blacksheep.org Date: Thursday, 8 April, 2010, 0:11 Dear=A0 Pete, Chris, LF Group, ----- Original Message ----- From: "M0FMT" ...>If you mix the 1500hz tone up to 500 kc/s conventionally don't you get= +/- 1500hz tone as the product. i.e. upper and lower sideband? Yes... ...>Thus the reason I suggested a Tayloe (for the want of a better descrip= tion) detector in reverse which resolves the unwanted sideband issue. I do= nt think a straight forward product mixer will do. That is essentially what G4JNT's simple phasing upconverter design ( http:= //www.g4jnt.com/LFUpconv.pdf ) mentioned previously does. ...>A simple phase modulator using two 8meg xtals by G3ZJO is shown on a= web page the URL in my last mail. Well more of a frequency modulator, but this generates a 1500Hz modulated= audio output from a PIC code generator. I think G3XIZ already has the 150= 0Hz modulated audio available from his existing PC, he just needs a way to= get it onto 500kHz. Cheers, Jim Moritz 73 de M0BMU=20 =20 --0-403748375-1270683602=:93786 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hi Jim
 
Sorry I missed the that mail I guess. Quickly looking at the G4= JNT pdf file the circuit is basically the same as the Softrock TX= in essences.
The reason I suggested Softrock is that it is a kit immediately avail= able and can be put together quickly without having to make up all CCT boa= rd or source all the components individually which makes it a "Surefire"&n= bsp;solution.
 
I will be honest I have not made a Softrock TRX for 500= only for 40/30m standard kit. I have other solutions i.e a couple of SSB= TRX available. I and have built a transverter for 500 but= not got it working so far.
 
I regularly use the RX part of my Softrock TRX= for 30, 40m and 80m and can convert 500kc/s to the bottom end of 80m but= to be perfectly honest I am not that enamoured with WSPR but just wanted= a nose around.
 
I always thought that WSPR phase shift modulation had to be line= arly amplified thinking about it now I don't know why I thought that.=  

73 es GL petefmt

--- On Thu, 8/4/10, James Moritz= <james.moritz@btopenworld.com> wrote:

From: James Moritz <james.moritz@btopenworl= d.com>
Subject: Re: LF: WSPR without an SSB TRX ?
To: rsgb_lf_gro= up@blacksheep.org
Date: Thursday, 8 April, 2010, 0:11

Dear  Pete, Chris, LF Group,

----- Orig= inal Message ----- From: "M0FMT" <m0fmt@yahoo.co.uk>


...>If you mix the 1500hz tone= up to 500 kc/s conventionally don't you get +/- 1500hz tone as the produc= t. i.e. upper and lower sideband?

Yes...

...>Thus the rea= son I suggested a Tayloe (for the want of a better description) detector= in reverse which resolves the unwanted sideband issue. I dont think a str= aight forward product mixer will do.

That is essentially what G4JNT= 's simple phasing upconverter design ( http://www.g4jnt.com/LFUpconv.pdf ) mention= ed previously does.


...>A simple phase modulator using two= 8meg xtals by G3ZJO is shown on a web page the URL in my last mail.
Well more of a frequency modulator, but this generates a 1500Hz modulated audio output= from a PIC code generator. I think G3XIZ already has the 1500Hz modulated= audio available from his existing PC, he just needs a way to get it onto= 500kHz.

Cheers, Jim Moritz
73 de M0BMU


=20 --0-403748375-1270683602=:93786--