Delivered-To: daveyxm@virginmedia.com Received: by 10.50.237.98 with SMTP id vb2csp872493igc; Tue, 31 Dec 2013 07:26:10 -0800 (PST) X-Received: by 10.194.120.41 with SMTP id kz9mr69100wjb.92.1388503569240; Tue, 31 Dec 2013 07:26:09 -0800 (PST) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id fq11si18839265wic.45.2013.12.31.07.26.08 for ; Tue, 31 Dec 2013 07:26:09 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Vy0zo-0002F9-DJ for rs_out_1@blacksheep.org; Tue, 31 Dec 2013 15:12:40 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vy0zm-0002F0-MO for rsgb_lf_group@blacksheep.org; Tue, 31 Dec 2013 15:12:38 +0000 Received: from vsmtp4.tin.it ([212.216.176.224]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Vy0zk-0002rU-62 for rsgb_lf_group@blacksheep.org; Tue, 31 Dec 2013 15:12:37 +0000 Received: from marco09cqcdi12 (87.0.27.68) by vsmtp4.tin.it (8.6.060.28) id 52696FEF088BB994 for rsgb_lf_group@blacksheep.org; Tue, 31 Dec 2013 16:12:35 +0100 Message-ID: <007f01cf063a$bbffb140$0201a8c0@marco09cqcdi12> From: "Marco Cadeddu" To: References: <20C550A7D07741688C6A26E73CBCF741@White> <52BF4895.8080502@iup.uni-heidelberg.de> <52BF7E2A.9000002@iup.uni-heidelberg.de> <52BFD963.8020300@freenet.de> <8C09023FA2074CB380BC9CF1E7A514E3@White> <52C00514.4030805@freenet.de> <80BAE827E26041D293D7836651E4595A@White> <52C0163B.5030504@freenet.de> <3C87189CFA294757996FC9163E49543E@AGB> <52C022C7.4040900@freenet.de> <52C06EFD.1090806@freenet.de> Date: Tue, 31 Dec 2013 15:12:34 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Spam-Score: -0.1 (/) 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: Hello Wolf, reading this message pushed me to check my netbook (a dot s from PackardBell) and surpise! in the properties I found that I could change the SR up to 192kHz!!! So I tried and it works but..... - although I can axtend the reception till 90 kHz, above 40 kHz the sensitivity falls (MDS is around -45÷50 dBm) - when using SR above 48 kHz the calibration of SR doesn't work (even when the reference signal is in the good reception band) or using a 10 kHz external reference. [...] Content analysis details: (-0.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.216.176.224 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (marcocadeddu[at]tin.it) -0.1 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 539279ff7bff569d21f0b11e439ca5cc Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab Content-Type: multipart/alternative; boundary="----=_NextPart_000_007C_01CF063A.BBCB5AD0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE 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 Status: O X-Status: X-Keywords: X-UID: 3174 This is a multi-part message in MIME format. ------=_NextPart_000_007C_01CF063A.BBCB5AD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Wolf, reading this message pushed me to check my netbook (a dot s from = PackardBell) and surpise! in the properties I found that I could change = the SR up to 192kHz!!! So I tried and it works but..... - although I can axtend the reception till 90 kHz, above 40 kHz the = sensitivity falls (MDS is around -45=F750 dBm) - when using SR above 48 kHz the calibration of SR doesn't work (even = when the reference signal is in the good reception band) or using a 10 = kHz external reference. Anyway is ever a good idea to explore the capabilities, and this is a = good occasion to wish to the group an Happy New Year! 73 de Marco, IK1HSS ----- Original Message -----=20 From: wolf_dl4yhf=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, December 29, 2013 6:50 PM Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab Hi Graham, About 74 kHz reception: I recently discovered that a Lenovo 'X61s' = netbook, bought cheaply at a rally, supports true 192 kHz sampling with = the onboard 'soundcard' (once one discovers where to configure that in = the swamped windows 7 system control, or wherever they decided to put = the soundcard control dialog today. IIRC it was "Properties of = Microphone", translated from german into english).=20 Indeed the usable 'audio' range covers a few Hz to 96 kHz ! This would = allow direct reception on 74 kHz, and also using DCF77, MSF, or similar = time signal transmitters as reference for the sample rate correction... = SL could translate down into the audible range, and downsample to 48 or = 24 kS/second, before sending the converted signal to other applications. Anyway it would be much easier if the "hard coded frequency range" = would simply be removed from the original Opera software, and completely = leave it to the human operator to enter the frequency range in a simple = input field. 73, Wolf . Am 29.12.2013 18:56, schrieb Graham: Thanks Wolf, With the 8K signals out side the Op decoder , some users = wanted to monitor the test , but needed a way of changing the = qrg slightly to match , The other thing , that occurred to me , was the other 75 K = stations , may have a TA chance using Op4H , +6 dB gain over op1H = in the 'window' time , may be 1 run or 2 max ? ... recovering = the 8K audio may be a problem , my ra6790gm has a locked bfo = range of +/- 19KHz or so , but , for normal ssb-rx , then a = shift up from 1500 would be needed [ may even catch Bob on 4H = hihi] 73-G,=20 From: wolf_dl4yhf=20 Sent: Sunday, December 29, 2013 1:25 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: VLF exciter / signal generation in Spectrum Lab Hello Graham, Am 29.12.2013 14:04, schrieb Graham: Wolf, Q How to configure SL as audio frequency changer ? =20 say 1500 Hz to 8 KHz , or , 8100 to 8200 etc=20 how is the set up ?=20 The easiest way is using the 'narrowband filter', which can also = shift frequencies.=20 Start by selecting 'Quick Settings' in the menu, then 'Other amateur = radio modes', 'Narrow CW filter with adjustable xyz'. You can see the = filter's passband on the main frequency scale, along with the 'zero = beat' indicator similar to a web sdr. Grab the passband widh the mouse = and move it to the 'source' frequency range. Alternatively, enter the = frequency shift in numeric form on the filter control panel. Details: = http://www.qsl.net/dl4yhf/speclab/filters.htm#filter_controls_on_main_fre= q_scale will SL appeared as a sound source ? It can, but unfortunately only as an ASIO device. Microsoft's = ever-changing driver model is so utterly complex that I gave up writing = my own 'multimedia driver'. Also I didn't feel like re-inventing the = wheel for XP, Vista, Win7, Win8, and whatever-comes-next... :o) Thus = the easiest (??) method would be to use Virtual Audio Cable. The more complex (but VAC-less) way, if ASIO is supported by the = audio-receiving application, is decribed in the 'Audio I/O' manual: http://www.qsl.net/dl4yhf/AudioIO/AudioIO_Manual.pdf The relevant chapter would be "Installation of in_AudioIO.dll as an = ASIO device". Now back to the soldering iron.. 73, Wolf . ------=_NextPart_000_007C_01CF063A.BBCB5AD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hello Wolf,
 
reading this message pushed me to check = my netbook=20 (a dot s from PackardBell) and surpise! in the properties I found that I = could=20 change the SR up to 192kHz!!!
So I tried and it works = but.....
- although I can axtend the reception = till 90 kHz,=20 above 40 kHz the sensitivity falls (MDS is around -45=F750 = dBm)
- when using SR above 48 kHz the = calibration of SR=20 doesn't work (even when the reference signal is in the good reception = band) or=20 using a 10 kHz external reference.
 
Anyway is ever a good idea to explore = the=20 capabilities, and this is a good occasion to wish to the group an Happy = New=20 Year!
 
73 de Marco, IK1HSS
----- Original Message -----
From:=20 wolf_dl4yhf=20
Sent: Sunday, December 29, 2013 = 6:50=20 PM
Subject: Re: LF: VLF exciter / = signal=20 generation in Spectrum Lab

Hi Graham,

About 74 kHz reception: = I=20 recently discovered that a Lenovo 'X61s' netbook, bought cheaply at a = rally,=20 supports true 192 kHz sampling with the onboard 'soundcard' (once one=20 discovers where to configure that in the swamped windows 7 system = control, or=20 wherever they decided to put the soundcard control dialog today. IIRC = it was=20 "Properties of Microphone", translated from german into english). =
Indeed=20 the usable 'audio' range covers a few Hz to 96 kHz ! This would allow = direct=20 reception on 74 kHz, and also using DCF77, MSF, or similar time signal = transmitters as reference for the sample rate correction...  SL = could=20 translate down into the audible range, and downsample to 48 or 24 = kS/second,=20 before sending the converted signal to other = applications.

Anyway it=20 would be much easier if the "hard coded frequency range" would simply = be=20 removed from the original Opera software, and completely leave it to = the human=20 operator to enter the frequency range in a simple input=20 field.

73,
  Wolf .


Am 29.12.2013 18:56, = schrieb=20 Graham:
Thanks Wolf,
 
With the 8K signals  out side  the  Op = decoder  ,=20 some  users  wanted  to  monitor the  = test  ,=20 but  needed  a  way of  changing the  = qrg =20 slightly to  match ,
 
The  other  thing , that  occurred  = to  me=20  , was  the  other 75 K stations  , may have = a  TA=20 chance  using  Op4H , +6 dB gain over op1H  =  in=20 the  'window'  time ,  may be  1  run = or =20 2  max  ? ... recovering  the  8K audio  = may =20 be a  problem ,  my  ra6790gm   has a  = locked=20 bfo  range  of  +/-  19KHz or  so  , = but =20 , for  normal  ssb-rx  , then  a  = shift  up=20 from  1500  would be  needed [ may even  catch = Bob =20 on 4H  hihi]
 
73-G,
 

From: wolf_dl4yhf=20
Sent: Sunday, December 29, 2013 1:25 PM
Subject: Re: LF: VLF exciter / signal generation in = Spectrum=20 Lab

Hello Graham,

Am 29.12.2013 = 14:04, schrieb=20 Graham:
Wolf,
 
Q How to  configure  SL  as audio=20  frequency   changer ?  
 
say   1500 Hz to  8 KHz , or , 8100 to =20 8200   etc
 
how is the  set  up  ? =

The=20 easiest way is using the 'narrowband filter', which can also shift=20 frequencies.
Start by selecting 'Quick Settings' in the menu, = then=20 'Other amateur radio modes', 'Narrow CW filter with adjustable xyz'. = You can=20 see the filter's passband on the main frequency scale, along with = the 'zero=20 beat' indicator similar to a web sdr. Grab the passband widh the = mouse and=20 move it to the 'source' frequency range. Alternatively, enter the = frequency=20 shift in numeric form on the filter control panel. = Details:

http://www.qsl.net/dl4yhf/speclab/filters.htm#fi= lter_controls_on_main_freq_scale


 
 
will SL  appeared as a  sound  source =20 ?
It can, but unfortunately only as an ASIO = device.=20 Microsoft's ever-changing driver model is so utterly complex that I = gave up=20 writing my own 'multimedia driver'. Also I didn't feel like = re-inventing the=20 wheel for XP, Vista, Win7, Win8, and whatever-comes-next...  = :o) =20 Thus the easiest (??) method would be to use Virtual Audio = Cable.

The=20 more complex (but VAC-less) way, if ASIO is supported by the = audio-receiving=20 application, is decribed in the 'Audio I/O' manual:

http://www.qsl.net/dl4yhf/AudioIO/AudioIO_Manual= .pdf

The=20 relevant chapter would be "Installation of in_AudioIO.dll as an ASIO = device".



Now back to the soldering = iron..

73, =20 Wolf .



------=_NextPart_000_007C_01CF063A.BBCB5AD0--