DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=googlemail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=L9wdCBKPn9Rotr6CDlLDSal+g7sv/BOvWOAT+yLcRgtepeI9eLaEIkToiTMAXyBx3P
         DRaggXNrJTtwH/EvuIK/9BJnNYxA9ryAaYwZPDoNVWnCZzC+3zR2lL+TPqYYGj4Q5kSz
         UHHYgMS/sOPmEm0HrFRIWwBMHC3fu8CaXEeOg=
MIME-Version: 1.0
In-Reply-To: <628921.87147.qm@web28505.mail.ukl.yahoo.com>
References: <628921.87147.qm@web28505.mail.ukl.yahoo.com>
Date: Wed, 7 Apr 2010 13:29:47 +0100
Message-ID: <n2kfc7eccec1004070529xa6ae391bjd0813dfa11059531@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@googlemail.com>
To: rsgb_lf_group@blacksheep.org
DomainKey-Status: good (testing) 
Subject: Re: LF: WSPR without an SSB TRX ?
Content-Type: multipart/alternative; boundary=0015175cfec8bd98320483a4b73a
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


--0015175cfec8bd98320483a4b73a
Content-Type: text/plain; charset=ISO-8859-1

If you want a stanadalone beacon then    http://www.g4jnt.com/beacons.htm
gives info on WSPR transmission, and includes PIC code for controlling an
AD9852 DDS and transmitting a pre-stored WSPR message.

You coud dive inside the PIC code, extract the WSPR generating routine and
use it to drive the frequency determining part of your MH Rx.   It does
require a GPS receiver (and uses the Motoloa binary protocol)  to give the
accurate timing info, but its virtually impossible to send WSPR without
accurate timing anyway.


Andy
www.g4jnt.com


On 7 April 2010 13:16, Chris Osborn <g3xiz@yahoo.co.uk> wrote:

>  LF,
>
> Is there a fairly simple interface unit which will enable me to
> transmit WSPR signals using my home built MF TX ?
>
> My TX has a VCO / FSK facility but no audio inputs.
>
> I've had a search of the internet but haven't yet found any suitable
> circuitry.
> All the articles I've viewed so far assume that one has an SSB
> transceiver...
>
> 73 Chris G3XIZ
>
>

--0015175cfec8bd98320483a4b73a
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div>If you want a stanadalone beacon then=A0=A0 =A0<a href=3D"http://www.=
g4jnt.com/beacons.htm">http://www.g4jnt.com/beacons.htm</a>=A0 gives info=
 on WSPR transmission, and includes PIC code for controlling an AD9852 DDS=
 and transmitting a pre-stored WSPR message.=A0=A0</div>

<div>=A0</div>
<div>You coud dive inside the PIC code, extract the WSPR generating routin=
e and use it to drive the frequency determining part of your MH Rx.=A0=A0=
 It does require a GPS receiver (and uses the Motoloa binary protocol) =A0=
to give the accurate timing info, but its virtually impossible to=A0send=
 WSPR without accurate timing anyway.</div>

<div>=A0</div>
<div><br clear=3D"all">Andy<br><a href=3D"http://www.g4jnt.com">www.g4jnt.=
com</a><br><br><br></div>
<div class=3D"gmail_quote">On 7 April 2010 13:16, Chris Osborn <span dir=
=3D"ltr">&lt;<a href=3D"mailto:g3xiz@yahoo.co.uk">g3xiz@yahoo.co.uk</a>&gt=
;</span> wrote:<br>
<blockquote style=3D"BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8e=
x; PADDING-LEFT: 1ex" class=3D"gmail_quote">
<div>
<div style=3D"FONT-FAMILY: times new roman, new york, times, serif; FONT-S=
IZE: 12pt">
<div>LF,</div>
<div>=A0</div>
<div>Is there a fairly simple interface unit=A0which will enable me to</di=
v>
<div>transmit=A0WSPR signals using my=A0home built MF TX ?</div>
<div>=A0</div>
<div>My TX has a=A0VCO / FSK facility but no audio inputs.</div>
<div>=A0</div>
<div>I&#39;ve had a search of the internet but haven&#39;t yet found any=
 suitable circuitry.</div>
<div>All the articles I&#39;ve viewed so far assume that one has an SSB tr=
ansceiver...</div>
<div>=A0</div>
<div>73 Chris G3XIZ</div></div><br></div></blockquote></div><br>

--0015175cfec8bd98320483a4b73a--