Return-Path: X-Spam-DCC: paranoid 1170; 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=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,RATWARE_GECKO_BUILD 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 t2RDthjc026887 for ; Fri, 27 Mar 2015 14:55:43 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YbUhT-0000BX-HB for rs_out_1@blacksheep.org; Fri, 27 Mar 2015 13:53:27 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YbUhS-0000BD-Ay for rsgb_lf_group@blacksheep.org; Fri, 27 Mar 2015 13:53:26 +0000 Received: from mail-wg0-f47.google.com ([74.125.82.47]) by relay1.thorcom.net with esmtps (TLSv1.2:AES128-GCM-SHA256:128) (Exim 4.85) (envelope-from <73dk7fc@googlemail.com>) id 1YbUhQ-0004iU-0v for rsgb_lf_group@blacksheep.org; Fri, 27 Mar 2015 13:53:25 +0000 Received: by wgra20 with SMTP id a20so99763597wgr.3 for ; Fri, 27 Mar 2015 06:53:22 -0700 (PDT) X-DKIM-Result: Domain=googlemail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:message-id:date:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=uu+SVeWws87e8RSjWKC/8Pyv7ERCb7hrXxhW7/3W67w=; b=OtS9sXTEXb0a9/jTFxOelHcRGLGeBDTV5RWQZr7oP+BQ5ypJSs7crnFUm8H5H7zBz8 hLPa4TaySQTJnOtPavLHVK7zb8HKr1HQpXigNHPpvXK0/+ijAYuDfA6+2uUwP4n31w6Y PwpgJRstjJ55EzcRlVAQMIth5RIH6m+LtToJXKA+MLpXBJf98Bl8iSnxe+VEJq5+hV1X BxZnaxwXq3+qWpBXuhgfB3cOsdiZ19B9R+B8ANfKyigW1X7eKGHWZ/9a6V8MxEIaP/CS En8Up+TkRDI8NWkoxc4ELavZz6bb9RvjZvHehWZXjXyFGa+5ANru0g1zgX6Dspvu9dRz 7c7Q== X-Received: by 10.194.92.169 with SMTP id cn9mr37157707wjb.61.1427464402359; Fri, 27 Mar 2015 06:53:22 -0700 (PDT) Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de. [129.206.22.206]) by mx.google.com with ESMTPSA id r3sm2981271wjw.7.2015.03.27.06.53.21 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 27 Mar 2015 06:53:21 -0700 (PDT) From: DK7FC <73dk7fc@googlemail.com> X-Google-Original-From: DK7FC <73dk7fc@gmail.com> Message-ID: <551560D0.1040306@gmail.com> Date: Fri, 27 Mar 2015 14:53:20 +0100 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4698D0522AFD45F896A41F2D16A2D831@AGB> <19EEF7A6DD30462FA6ACC0F015DC9F52@AGB> <5509E3D5.90900@gmail.com> <55102D0C.8040405@gmail.com>,<55148587.3090101@gmail.com> <7E7DFBB4D102A04DB5ADC88D66628A4A234F1A25@ICTS-S-MBX1.luna.kuleuven.be> <520562D5C7694FF69C20E595E00B793D@F6CNIToshiba>,<55155AD6.1090102@gmail.com> <7E7DFBB4D102A04DB5ADC88D66628A4A234F1AFC@ICTS-S-MBX1.luna.kuleuven.be> In-Reply-To: <7E7DFBB4D102A04DB5ADC88D66628A4A234F1AFC@ICTS-S-MBX1.luna.kuleuven.be> X-Scan-Signature: 8ef270cc2ec30cd34b6313d7ada17a45 Subject: Re: LF: Re: TXing WSPR on 630m on a Raspberry Pi, Stefan in QRP... Content-Type: multipart/alternative; boundary="------------020803060000090708060103" 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 2800 This is a multi-part message in MIME format. --------------020803060000090708060103 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Am 27.03.2015 14:43, schrieb Rik Strobbe: > > Hi Stefan, all, > > /And i wrote an email to PE1NNZ and asked to a modification of > the C-program to generate a signal with 4x higher FSK > shift. Then it it would be possible to use that version for OMs having > a divide-by-4 stage in their PA (to get a perfect 50% duty cycle > and rectangular shape (after passing optocouplers etc)). This would be > a safe way to drive my QRP PA, testwise of course... > / > I have written such a program for windows (actually you can set > the devider ratio to any number between 1 and 100). > That way any HF TRX can be used to gerate a MF (or > LF) WSPR signal with a simple CMOS ot TTL divider IC. > If anyone is interested just let me know ... > 73, Rik ON7YD - OR7T Hi Rik, Sounds good but how does the windows PC generate the RF? You know, the Raspi directly generates a "tone" at 475 kHz (or any other frequency up to 250 MHz), not at 1500 Hz. Anyway it is interesting. Does your program provide time sync and a GUI to type callsign/locator/erp and a "duty cycle"? 73, Stefan --------------020803060000090708060103 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit
Am 27.03.2015 14:43, schrieb Rik Strobbe:

Hi Stefan, all,

 

And i wrote an email to PE1NNZ and asked to a modification of the C-program to generate a signal with 4x higher FSK shift. Then it it would be possible to use that version for OMs having a divide-by-4 stage in their PA (to get a perfect 50% duty cycle and rectangular shape (after passing optocouplers etc)). This would be a safe way to drive my QRP PA, testwise of course...

I have written such a program for windows (actually you can set the devider ratio to any number between 1 and 100).
That way any HF TRX can be used to gerate a MF (or LF) WSPR signal with a simple CMOS ot TTL divider IC.
If anyone is interested just let me know ...
 
73, Rik  ON7YD - OR7T
 
Hi Rik,

Sounds good but how does the windows PC generate the RF? You know, the Raspi directly generates a "tone" at 475 kHz (or any other frequency up to 250 MHz), not at 1500 Hz.
Anyway it is interesting. Does your program provide time sync and a GUI to type callsign/locator/erp and a "duty cycle"?

73, Stefan
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