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[195.171.43.25]) by mx.google.com with ESMTP id r6si22767406wjo.96.2014.06.01.18.13.23 for ; Sun, 01 Jun 2014 18:13:23 -0700 (PDT) Received-SPF: none (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: owner-rsgb_lf_group@blacksheep.org does not designate permitted sender hosts) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WrFz5-0003CZ-9E for rs_out_1@blacksheep.org; Mon, 02 Jun 2014 01:20:15 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WrFyz-0003CO-BW for rsgb_lf_group@blacksheep.org; Mon, 02 Jun 2014 01:20:09 +0100 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WrFyx-0004t6-3U for rsgb_lf_group@blacksheep.org; Mon, 02 Jun 2014 01:20:07 +0100 Received: from AGB ([95.145.225.95]) by mwinf5d11 with ME id 9CL51o006247JRb03CL5hE; Mon, 02 Jun 2014 02:20:06 +0200 X-ME-Helo: AGB X-ME-Date: Mon, 02 Jun 2014 02:20:06 +0200 X-ME-IP: 95.145.225.95 Message-ID: <74954BBB20D24F9CBD31581477496ED6@AGB> From: "Graham" To: References: <58A4985B299D4D74A3A60E3CF0F3A48F@AGB> <53879C86.9090407@gmail.com> In-Reply-To: <53879C86.9090407@gmail.com> Date: Mon, 2 Jun 2014 01:20:05 +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: Dynamic range or transient recovery ? This seems to show the noise floor in the -90 area , DSP is never mentioned in these dynamic range adverts , designed to link large db range to large amounts of $$ , post processing , produces ranges far greater than the basic bit count , besides if you Tx into it , its only a £15 fizz not $1000 fut [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 91e1efbff209cbddb14bc9e018c2cfe8 Subject: Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w U/V antenna Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A5_01CF7E00.C8D5D370" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_60_70,HTML_MESSAGE, MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false This is a multi-part message in MIME format. ------=_NextPart_000_00A5_01CF7E00.C8D5D370 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dynamic range or transient recovery ? This seems to show the noise floor in the -90 area , DSP is = never mentioned in these dynamic range adverts , designed to = link large db range to large amounts of $$ , post processing , = produces ranges far greater than the basic bit count , besides = if you Tx into it , its only a =A315 fizz not $1000 fut=20 Unlike the simple =A35 ones of course ,which have 2 lives , one = as 24 to 1700 MHz Rx , then , when you destroy the front end = , a blob of solder , and you have a dc-20 MHz sdr add a little = gain from a mini whip and you ready for winter=20 http://www.ebay.com/itm/100KHz-1-7GHz-full-band-UV-HF-RTL-SD-32-88-/12133= 9945340?_trksid=3Dp2047675.l4066 73-G, From: DK7FC=20 Sent: Thursday, May 29, 2014 9:45 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner = Receiver DIY KITS w U/V antenna G.. This is all useless unless the device has a sufficient DYNAMIC RANGE, = which should be at least 80 dB, better 100 dB, for LF here in a 2000 km = radius to DCF39 /HGA22. And this is most unlikely... So, another nice cheap chinese game to play with, but nothing serious... 73, Stefan Am 29.05.2014 20:41, schrieb Graham:=20 All Just noticed this in the sdr-sharp group =20 Cheap SDR , looks to work , directly on LF and MF ~~ =A315=20 extravagant, at 3 times ! more than a normal SDR=20 73-G, EBAY Item number:121339945340 100KHz-1.7GHz full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w = U/V antenna = https://uk.groups.yahoo.com/neo/groups/SDRSharp/conversations/topics/1444= 1 ------=_NextPart_000_00A5_01CF7E00.C8D5D370 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dynamic  range  or  transient  recovery ?
 
This  seems  to  show the  noise floor  in = the  -90 area  , DSP  is never  mentioned in = these =20 dynamic  range  adverts  , designed   to =20 link   large  db  range  to  large  = amounts=20 of  $$  , post  processing , produces  ranges =20 far  greater  than the   basic  bit  count = ,=20 besides  if you  Tx into  it  , its only  = a =20 =A315  fizz not  $1000  fut
 
Unlike  the  simple =A35  ones of =20 course ,which  have  2  lives  , one  = as =20 24  to  1700 MHz   Rx , then  , when you =20 destroy   the  front  end  ,  a blob = of =20 solder , and you  have a  dc-20 MHz  sdr    = add =20 a  little  gain from a  mini whip  and  = you =20 ready  for  winter
 
http://www.ebay.com/itm/100KHz-= 1-7GHz-full-band-UV-HF-RTL-SD-32-88-/121339945340?_trksid=3Dp2047675.l406= 6
 
73-G,
 

From: DK7FC
Sent: Thursday, May 29, 2014 9:45 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: 100KHz-1.7GHz full band UV HF RTL-SDR USB = Tuner=20 Receiver DIY KITS w U/V antenna

G..

This is all useless unless the device has a = sufficient=20 DYNAMIC RANGE, which should be at least 80 dB, better 100 dB, for LF = here in a=20 2000 km radius to DCF39 /HGA22. And this is most unlikely...
So, = another nice=20 cheap chinese game to play with, but nothing serious...

73,=20 Stefan

Am 29.05.2014 20:41, schrieb Graham:=20
All
 
Just =20 noticed  this  in the  sdr-sharp   = group =20
 
Cheap=20 SDR , looks to  work  , directly  on LF and MF ~~=20  =A315
 
extravagant,=20 at    3  times  !  more  than a  = normal SDR=20
 
73-G,
 
EBAY Item=20 number:121339945340
 
100KHz-1.7GHz=20 full band UV HF RTL-SDR USB Tuner Receiver DIY KITS w U/V = antenna
 
https://uk.groups.yahoo.com/neo/groups/SDRSharp/= conversations/topics/14441
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