Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-di06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 63F6A380000CD; Sun, 7 Apr 2013 13:49:01 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UOthw-0005HE-1W for rs_out_1@blacksheep.org; Sun, 07 Apr 2013 18:48:48 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UOthv-0005H1-Hd for rsgb_lf_group@blacksheep.org; Sun, 07 Apr 2013 18:48:47 +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 1UOtht-0005Nk-Om for rsgb_lf_group@blacksheep.org; Sun, 07 Apr 2013 18:48:46 +0100 Received: from AGB ([2.26.13.195]) by mwinf5d14 with ME id M5oQ1l00J4CW4NS035oQkt; Sun, 07 Apr 2013 19:48:25 +0200 Message-ID: From: "Graham" To: References: <122E7FDB629A419F812E13FCF3EAF6BD@AGB> <1B78A630D31B4549BDCC602762707068@AGB> <993A77CEFEDD48F2823CA7CBA5C07785@PcMinto> <9959A022143F43F7967F546EF3FDAEE6@PcMinto> <53E4797D6C2847A59497D64EFE2768DC@AGB> <7ADE75EC4BE44362920CB216C5C69D6A@PcMinto> In-Reply-To: <7ADE75EC4BE44362920CB216C5C69D6A@PcMinto> Date: Sun, 7 Apr 2013 18:48:24 +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: Minto, Yes this has the e4000 tuner , I was about to order one with the r820t tuner , for the extended range , may be Robert can comment on his, as to sensitivity ? 73-G. [...] 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: 3a21c85df7468d917c96c4564305897b Subject: =?UTF-8?Q?Re:_LF:_Re:_=C2=A310_Dongel-SDR__Dire?= =?UTF-8?Q?ct_sample_on_504_KHz_-_S/N__TEST?= =?UTF-8?Q?_?= Content-Type: multipart/alternative; boundary="----=_NextPart_000_017F_01CE33C0.7BED74E0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60,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: 3039ac1da60a5161b18c7862 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_017F_01CE33C0.7BED74E0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Minto, Yes this has the e4000 tuner , I was about to order one with = the r820t tuner , for the extended range , may be Robert can = comment on his, as to sensitivity ? 73-G.=20 NB: Im running Op4 on 477 at the moment and just decoded at = 17:25 477 PA0WMR Op4 -33 dB -33 is 3 dB past the expected lower level , so may be , the = a/d alone is enough for MF , the noise level must be over 0.1 = uV ...? =20 From: Minto Witteveen=20 Sent: Sunday, April 07, 2013 6:07 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: =C2=A310 Dongel-SDR Direct sample on 504 KHz - S/N TEST = Hi Graham, Interesting=E2=80=A6 0.1 uV is not bad. Should be good enough. What = type of tuner does your dongle have btw? E400 or R820T. Maybe you = mentioned it but then I forgot. I just popped the hood on my dongle, it has the R820T. So for comparison = I will order one with the E400? 73=E2=80=99s Minto pa3bca -------------------------------------------------------------------------= - Ceterum censeo Carthaginem delendam esse From: Graham=20 Sent: Sunday, April 07, 2013 15:53 To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: =C2=A310 Dongel-SDR Direct sample on 504 KHz - S/N = TEST=20 Minto Quick test at 0.1 uV pd as before , dongle agc =3D off , gain = =3D max=20 Good tone from the speaker at this level , the drift 433 MHz is = possibly the xtal oven in the sig-gen warming up as well as the = dongle=20 low trace at 999 MHz , needed about 0.3 0.4 uV for 'tone' = but I would not be 100% sure the dongle was looking at the = indicated level from the gen , also the coax is still attached = , but 0.1 uV to give these plots at vhf is reasonable ? 73 -G, ------=_NextPart_000_017F_01CE33C0.7BED74E0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Minto,
 
Yes  this  has the  e4000   tuner ,  = I=20 was  about to  order  one  with the  = r820t  =20 tuner  , for the  extended  range ,  may  = be =20 Robert can  comment  on his, as  to   = sensitivity=20 ?
 
73-G.
 
NB:  Im running   Op4   on 477  at = the =20 moment  and just  decoded  at  = 17:25    477=20 PA0WMR Op4 -33 dB
 
-33  is   3  dB past the  expected  = lower=20 level , so  may  be  , the  = a/d  alone =20 is  enough  for  MF ,  the  noise level  = must=20 be  over 0.1 uV ...?
 

 
From: Minto Witteveen
Sent: Sunday, April 07, 2013 6:07 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: LF: Re: =C2=A310 Dongel-SDR Direct sample on 504 = KHz - S/N TEST=20

Hi Graham,

Interesting=E2=80=A6  0.1 uV is=20 not bad. Should be good enough. What type of tuner does your dongle have = btw?=20  E400 or R820T. Maybe you = mentioned=20 it but then I forgot.
I just popped the hood on my dongle, it has the = R820T.=20 So for comparison I will order one with the = E400?

73=E2=80=99s Minto = pa3bca

 
-------------------------------------------------------------------= -------
Ceterum=20 censeo Carthaginem delendam esse
 
From: Graham
Sent: Sunday, April 07, 2013 15:53
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Re: =C2=A310 Dongel-SDR Direct sample on = 504 KHz - S/N=20 TEST
 
Minto
 
Quick test  at  0.1 uV   pd  as  = before =20 ,  dongle  agc =3D off  , gain =3D max
 
Good  tone  from the  speaker  at  = this =20 level  , the  drift 433 MHz  is possibly   = the =20 xtal oven in the  sig-gen  warming  up  as = well =20 as  the  dongle
 
low  trace  at  999 MHz  , needed =20 about   0.3  0.4  uV for  'tone'   = but =20 I would  not  be 100% sure the  dongle was  = looking =20 at  the  indicated  level  from the  gen , = also =20 the  coax  is  still  attached  , = but   0.1=20 uV  to  give these  plots  at vhf  is  = reasonable=20 ?
 
73 -G,
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