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[195.171.43.25]) by mx.google.com with ESMTP id 13si15599642wjt.147.2013.12.30.14.24.05 for ; Mon, 30 Dec 2013 14:24:05 -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 1VxkWo-0005gK-Vt for rs_out_1@blacksheep.org; Mon, 30 Dec 2013 21:37:38 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1VxkWo-0005gB-He for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 21:37:38 +0000 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 1VxkWm-0008BD-JQ for rsgb_lf_group@blacksheep.org; Mon, 30 Dec 2013 21:37:37 +0000 Received: from AGB ([95.145.227.206]) by mwinf5d10 with ME id 7xda1n0094TpYKj03xdbPT; Mon, 30 Dec 2013 22:37:35 +0100 Message-ID: <91D1804187F94D3694B76B30AEC5473B@AGB> From: "Graham" To: References: <079a01cf057b$1af87300$50e95900$@comcast.net> <52C1BBFD.1040902@freenet.de> <000a01cf0598$436bcd60$0201a8c0@EFREMOV> <91E0983E29E940E3B6BBB1ACA7677BF0@White> In-Reply-To: <91E0983E29E940E3B6BBB1ACA7677BF0@White> Date: Mon, 30 Dec 2013 21:37:34 -0000 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: Ah 2FSK , Could call it Redundant Tone Transmitting sYstem or RTTY for short ; -) But , yes, Opera decoder is backwards compatible to FSK beacons , either shifting inside the decoder pass band or outside , as long as the shift is past the gaud band of a few 100 mHz , [...] 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: 131286aabc28dd54c072e5e89638c651 Subject: Re: LF: 19:43 136 DF6NM Op32 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0063_01CF05A7.5A36ECA0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,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 Status: O X-Status: X-Keywords: X-UID: 1901 This is a multi-part message in MIME format. ------=_NextPart_000_0063_01CF05A7.5A36ECA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ah 2FSK , Could call it Redundant Tone Transmitting sYstem = or RTTY for short ; -) But , yes, Opera decoder is backwards compatible to FSK beacons , = either shifting inside the decoder pass band or outside , as long = as the =20 shift is past the gaud band of a few 100 mHz ,=20 G,=20 From: Markus Vester=20 Sent: Monday, December 30, 2013 8:10 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: 19:43 136 DF6NM Op32 only a test with DFCW-Opera ;-). Just another idea to generate an Opera = signal with an uninterrupted carrier, as a workaround for transmitters = with flipflops. The upper frequency carries the desired modulation, the = lower one just dumps the carrier during the gaps. Choosing the FSK shift = as a multiple of the symbol rate preserves the phase. Due to poor energy efficiency, this is NOT the recommended technique to = generate a coherent carrier;-) Best 73, MArkus From: rn3agc=20 Sent: Monday, December 30, 2013 8:49 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: 19:43 136 DF6NM Op32 GE Markus, What was it?:) 73 Andrey ------=_NextPart_000_0063_01CF05A7.5A36ECA0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
Ah 2FSK   ,   Could  call  it =20 Redundant  Tone Transmitting  sYstem    = or  =20 RTTY  for  short  ; -)
 
But , yes,  Opera  decoder  is  backwards = compatible=20 to  FSK beacons  , either shifting  inside the =20 decoder  pass  band or  outside , as long as the  =
shift is  past the  gaud  band  of a  few = 100=20 mHz  ,
 
G,
 
 

From: Markus Vester
Sent: Monday, December 30, 2013 8:10 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: 19:43 136 DF6NM Op32

only a test with DFCW-Opera ;-). = Just another=20 idea to generate an Opera signal with an uninterrupted carrier, as = a=20 workaround for transmitters with flipflops. The upper = frequency=20 carries the desired modulation, the lower one just dumps the carrier = during the=20 gaps. Choosing the FSK shift as a multiple of the symbol rate = preserves the=20 phase.
 
Due to poor energy efficiency, this is = NOT the=20 recommended technique to generate a coherent = carrier;-)
 
Best 73,
MArkus
 
 

From: rn3agc
Sent: Monday, December 30, 2013 8:49 PM
Subject: LF: 19:43 136 DF6NM Op32

GE Markus,
What was=20 it?:)

73
Andrey

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