Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2B2B9380000E3; Fri, 24 Aug 2012 17:01:02 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1T50zB-0006Yz-RP for rs_out_1@blacksheep.org; Fri, 24 Aug 2012 22:00:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1T50zB-0006Yq-B3 for rsgb_lf_group@blacksheep.org; Fri, 24 Aug 2012 22:00:09 +0100 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1T50z9-0006em-5o for rsgb_lf_group@blacksheep.org; Fri, 24 Aug 2012 22:00:08 +0100 Received: from AGB ([2.26.47.170]) by mwinf5d13 with ME id ql061j0093gJasq03l06Wa; Fri, 24 Aug 2012 23:00:06 +0200 Message-ID: <97D8DBA3654D421391F9304494961C50@AGB> From: "Graham" To: Date: Fri, 24 Aug 2012 22:00:06 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: For those who may not look on the Ya-BOO group , I started a discussion over using a simple ADC for LF/MF .. turns out there are linux drivers for the ezeycap sdr dongle to run directly on LF/HF , with NO analogue convertor . but as yet , no windows version .. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 86a33fe05fd4c52b025518dbd249b8c0 Subject: LF: SDR 0..1MHz A oppertunity for design ! Content-Type: multipart/alternative; boundary="----=_NextPart_000_0077_01CD8243.D2278F00" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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-sid: 3039ac1d4ad45037eb8e46af X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0077_01CD8243.D2278F00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable For those who may not look on the Ya-BOO group , I started a = discussion over using a simple ADC for LF/MF .. turns out there = are linux drivers for the ezeycap sdr dongle to run directly = on LF/HF , with NO analogue convertor . but as yet , no = windows version ..=20 This post from Alberto follows the idea with a suggestion to = use a instrument ADC , to configure a 0 > 1 MHz SDR RX with = minimal components=20 73 -G..=20 Re: SDR 0..1MHz=20 --- In rsgb_lf_group@..., Alberto di Bene wrote: > > Thinking about an SDR receiver meant for the 0..1 MHz band, a = possible, > minimal hardware-wise realization could perhaps be that of using an = Analog > Devices AD-7760 ADC, with its superb SNR, sampling at 2.5 MHz, 24 = bits, > followed by a Cypress FX2 chip to implement a USB dialog with the PC. > > No FPGA nor DDC would be needed. The hardware would then send > a 2.5 MHz stream of digitized data to the PC, which will process them > with, e.g. Winrad. Winrad is quite capable of coping with such data = rate. > In this very moment I am listening with Winrad and the Elad FDM-S1 > receiver to a local MW station, and the FDM-S1 is set for a final = output > frequency (after its DDC) of 3072 kHz. So 2.5 MHz would be a breeze = for > Winrad. > > If somebody designs and builds such a hardware, I am more than willing = to > write an ExtIO DLL to interface Winrad with it. > > 73 Alberto I2PHD > Alberto, Well that's a most interesting idea !, checking on e-bay , the two chips = are about =A318 the pair . that only leaves the slight problem of the design However .. there is a development board + support for the ADC http://www.analog.com/static/imported-files/eval_boards/EVAL-AD7760_7762E= DZ.pdf But as to how much of it is 'actually' needed for this application remains to be seen .. But what ever the outcome , it would be a true 0>1 MHz Rx with very = little problems, compared to the problems of the 'race to DC' from the analogue converter option's ! 73 -G. ------=_NextPart_000_0077_01CD8243.D2278F00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
For  those who  may  = not =20 look  on the  Ya-BOO   group  , I started = a =20 discussion  over  using  a  simple  ADC = for =20 LF/MF  .. turns  out  there  are  linux =20 drivers  for the   ezeycap  sdr  dongle = to =20 run  directly  on LF/HF  , with  NO  =20 analogue  convertor  . but  as  yet  , no  = windows  version  ..
 
This  post  from = Alberto =20 follows  the  idea   with a suggestion   = to =20 use  a  instrument  ADC  , to   configure = a =20 0 > 1 MHz   SDR RX  with  minimal  = components
 
73 -G..
 
 
Re: SDR 0..1MHz



--- In rsgb_lf_group@...,=20 Alberto di Bene <dibene@...> wrote:
>
> Thinking about = an SDR=20 receiver meant for the 0..1 MHz band, a possible,
> minimal = hardware-wise=20 realization could perhaps be that of using an Analog
> Devices = AD-7760=20 ADC, with its superb SNR, sampling at 2.5 MHz, 24 bits,
> followed = by a=20 Cypress FX2 chip to implement a USB dialog with the PC.
>
> = No FPGA=20 nor DDC would be needed. The hardware would then send
> a 2.5 MHz = stream=20 of digitized data to the PC, which will process them
> with, e.g. = Winrad.=20 Winrad is quite capable of coping with such data rate.
> In this = very=20 moment I am listening with Winrad and the Elad FDM-S1
> receiver = to a=20 local MW station, and the FDM-S1 is set for a final output
> = frequency=20 (after its DDC) of 3072 kHz. So 2.5 MHz would be a breeze for
>=20 Winrad.
>
> If somebody designs and builds such a = hardware,=20 I am more than willing to
> write an ExtIO DLL to interface Winrad = with=20 it.
>
> 73 Alberto I2PHD
>
 
 

Alberto,

Well that's a = most=20 interesting idea !, checking on e-bay , the two chips are
about =A318 = the pair=20 . that only leaves the slight problem of the design

However .. = there is a=20 development board + support for the ADC

http://www.analog.com/static/imported-files/eval_boards/E= VAL-AD7760_7762EDZ.pdf

But=20 as to how much of it is 'actually' needed for this = application
remains to be=20 seen ..

But what ever the outcome , it would be a true 0>1 MHz = Rx with=20 very little
problems, compared to the problems of the 'race to DC' = from the=20 analogue
converter option's !

73 = -G.

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