Return-Path: X-Spam-DCC: paranoid 1233; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t54GTcli023142 for ; Thu, 4 Jun 2015 18:29:38 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Z0Xyb-0007x9-Fu for rs_out_1@blacksheep.org; Thu, 04 Jun 2015 17:26:41 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Z0Xyb-0007x0-39 for rsgb_lf_group@blacksheep.org; Thu, 04 Jun 2015 17:26:41 +0100 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1Z0XyZ-0000Wz-84 for rsgb_lf_group@blacksheep.org; Thu, 04 Jun 2015 17:26:39 +0100 Received: from AGB ([95.150.80.241]) by mwinf5d01 with ME id cGSb1q00B5CPUTB03GSbH1; Thu, 04 Jun 2015 18:26:38 +0200 X-ME-Helo: AGB X-ME-Date: Thu, 04 Jun 2015 18:26:38 +0200 X-ME-IP: 95.150.80.241 Message-ID: <9AD5DFB79EC24B19AA07B79A00896D67@AGB> From: "Graham" To: References: <1052531792.20150604131722@chriswilson.tv><7E7DFBB4D102A04DB5ADC88D66628A4A235626A6@ICTS-S-MBX1.luna.kuleuven.be><505047068.20150604142541@chriswilson.tv> In-Reply-To: Date: Thu, 4 Jun 2015 17:26:35 +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-Scan-Signature: 9bd342c7d74bc0c7d15d59c1164ca995 Subject: Re: Re[2]: LF: IDC-136-BLT 136kHz receivers Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01D09EEB.9B42E4E0" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3441 This is a multi-part message in MIME format. ------=_NextPart_000_0015_01D09EEB.9B42E4E0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Amplified pre selector and one of the =C2=A35 usb stick's in = direct sample , ala 0.001 uF to the A/D ..Can pay =C2=A3$=C2=A3 = more , but these take a lot of beating .. Amp gain , say 10 dB , output Z round 200 ohms =20 sdr-sharp gives full access to the dongle manual gain and agc = etc=20 Even no pre-amp , looking at the Tx tuner , puts up a good job=20 Simons multi session sdr-console , gives true multi mode , = multi qrg monitoring , but may need a convertor=20 Put any cash out lay into the pre selector and pre-amp ..=20 73-G, From: Andy Talbot=20 Sent: Thursday, June 04, 2015 2:30 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: Re[2]: LF: IDC-136-BLT 136kHz receivers No, a completely different approach. For one thing teh LO has to be = supplied at 4*=20 Someone must do an LF version of the Softrock - surely Andy On 4 June 2015 at 14:25, Chris Wilson wrote: Hello Andy, Thursday, June 4, 2015 > AH, thanks for finding that - must have missed it on first looking. > Yes I agree, the NE612 is a poor mixer to use for those purposes. =20 > A diode ring, or bus switch would do a muxch better job > But why not an I/Q conversion and make use of all the decent SDR = software out there? =20 > Andy G4JNT I think they also do an IQ version, not sure if it's currently available. I don't suppose the other IC is a direct swap is it? Thanks. -- Best regards, Chris mailto:chris@chriswilson.tv ------=_NextPart_000_0015_01D09EEB.9B42E4E0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Amplified   pre  selector  and  one of = the =20 =C2=A35  usb  stick's  in direct sample ,  = ala   0.001=20 uF  to  the  A/D ..Can pay =C2=A3$=C2=A3 more = ,  but =20 these  take a  lot  of  beating ..
 
Amp  gain , say   10 dB  , output   = Z =20 round  200  ohms 
 
sdr-sharp  gives  full  access  to the =20 dongle   manual  gain and   agc  etc =
 
Even  no  pre-amp  , looking  at = the   Tx=20 tuner ,  puts  up a good  job
 
Simons  multi  session  sdr-console ,  =20 gives   true multi  mode  , multi  qrg  = monitoring=20 , but may need  a  convertor
 
Put any  cash out lay  into  the   = pre=20 selector  and  pre-amp  ..
 
73-G,
 

Sent: Thursday, June 04, 2015 2:30 PM
Subject: Re: Re[2]: LF: IDC-136-BLT 136kHz=20 receivers

No, a completely different approach.  For one thing = teh LO has=20 to be supplied at 4*=20

Someone must do an LF version of the Softrock - surely

Andy


On 4 June 2015 at 14:25, Chris Wilson <chris@chriswilson.tv> wrote:
Hello Andy,

Thursday, June 4, = 2015


>=20 AH, thanks for finding that - must have missed it on first = looking.
>=20 Yes I agree, the NE612 is a poor mixer to use for those purposes.=20  
> A diode ring, or bus switch would do a muxch better=20 job


> But why not an I/Q conversion and make use of all = the=20 decent SDR software out there?   


> Andy=20  G4JNT


I  think  they  also  = do =20 an  IQ  version, not sure if it's = currently
available. =20 I  don't  suppose  the  other  IC  is a = direct=20 swap is it?
Thanks.






--
Best = regards,
 Chris =20                     =  =20     mailto:chris@chriswilson.tv


=

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