DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        b=fByCRvUEEypGwB2MjR0kcfz5/Rha9clBb1kguZ7vaXjtgp9TOtNBJm6Y5Gg+hh0O6r
         9O6WQsrIRJZjGWQCfTtEhXHLBMKTAtKnXEfPASPEl41irTkSoBVHdYdx7ZBDYLgwm+Uj
         mZve4DGHlFTjlLgh2/4aPptwuFOJ2755J/lYo=
MIME-Version: 1.0
In-Reply-To: <E383450813A24A3898499C2E220D8FE8@JimPC>
References: <7F70CDE2-FFAF-4E06-8840-133B53D04F9B@numeo.fr>
	<E383450813A24A3898499C2E220D8FE8@JimPC>
Date: Mon, 23 May 2011 13:13:23 +0100
Message-ID: <BANLkTimtxNE=rHa=D9i5cO9rwxS+m1-AZg@mail.gmail.com>
From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org
DomainKey-Status: good (testing) 
Subject: Re: LF: Re: New RX
Content-Type: multipart/alternative; boundary=000e0cdf13ded9b98c04a3f06555
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


--000e0cdf13ded9b98c04a3f06555
Content-Type: text/plain; charset=ISO-8859-1

There is, but it involves making up some extra hardware to generate a clock
at 66.66666MHz.   G4HUP does a module.    http://g4hup.com/SDRlock.html
using direct frequency synthesis (multiply / divide) or you could use a PLL.

Andy
www,g4jnt.com




On 23 May 2011 11:07, James Moritz <james.moritz@btopenworld.com> wrote:

> Dear John, LF Group,
>
> I The main technical criticism I have of the SDR-IQ is that there is no
> easy way of using an external frequency standard - but the internal standard
> is no worse than the usual amateur rig/sound card combination, and is
> adequate for most things. At this QTH, it is neccessary to connect an
> appropriate filter between the antenna and SDR-IQ to attenuate the 10s of
> volts per metre from local broadcasters, but this is also true of nearly all
> other receivers, which usually don't have preselectors in the LF/MF range.
>
> Compared to other RXs, the SDR-IQ is fairly cheap - so maybe you can
> persuade your birthday present buyers to throw in the laptop as well ;-)
>
> Cheers, Jim Moritz
> 73 de M0BMU
>
>

--000e0cdf13ded9b98c04a3f06555
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div>There is, but it involves making up some extra hardware to generate=
 a clock at 66.66666MHz.=A0=A0 G4HUP does a module.=A0=A0=A0 <a href=3D"ht=
tp://g4hup.com/SDRlock.html">http://g4hup.com/SDRlock.html</a>=A0=A0 using=
 direct frequency synthesis (multiply / divide) or you could use a PLL.</d=
iv>

<div>=A0</div>
<div>Andy</div>
<div>www,<a href=3D"http://g4jnt.com">g4jnt.com</a></div>
<div>=A0</div>
<div><br><br>=A0</div>
<div class=3D"gmail_quote">On 23 May 2011 11:07, James Moritz <span dir=3D=
"ltr">&lt;<a href=3D"mailto:james.moritz@btopenworld.com">james.moritz@bto=
penworld.com</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">Dear John, LF Group,<br><br>I=
 The main technical criticism I have of the SDR-IQ is that there is no eas=
y way of using an external frequency standard - but the internal standard=
 is no worse than the usual amateur rig/sound card combination, and is ade=
quate for most things. At this QTH, it is neccessary to connect an appropr=
iate filter between the antenna and SDR-IQ to attenuate the 10s of volts=
 per metre from local broadcasters, but this is also true of nearly all ot=
her receivers, which usually don&#39;t have preselectors in the LF/MF rang=
e.<br>
<br>Compared to other RXs, the SDR-IQ is fairly cheap - so maybe you can=
 persuade your birthday present buyers to throw in the laptop as well ;-)<=
br><br>Cheers, Jim Moritz<br>73 de M0BMU <br><br></blockquote></div><br>

--000e0cdf13ded9b98c04a3f06555--