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From: "Clemens Paul" <cpaul@gmx.net>
To: <rsgb_lf_group@blacksheep.org>
References: <20C550A7D07741688C6A26E73CBCF741@White> <BLU180-W3735DAEA6FF8ECFCD60A40ACCD0@phx.gbl> <52BD619F.3060701@freenet.de>
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Date: Sat, 28 Dec 2013 01:13:35 +0100
Message-ID: <BBD198A876BF4804B8D011C6D72F1203@Clemens0811>
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Subject: LF: mw activity 
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Status: O

 DK7FC and DF5QG in CW both with 599 here until 00.05.
(DK7FC sometimes with 59~)  :-)
QSB max. 6dB.

http://no.nonsense.ee/qthmap/?qth=JN68KJ79WJ

73
Clemens
DL4RAJ 

>-----Original Message-----
>From: owner-rsgb_lf_group@blacksheep.org 
>[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of wolf_dl4yhf
>Sent: Friday, December 27, 2013 12:17 PM
>To: rsgb_lf_group@blacksheep.org
>Subject: Re: LF: Sending Opera with SpecLab
>
>Greetings all,
>(and apologies to Markus for juming in so quickly..)
>
>The principle described by Markus is only for transmission. 
>To take place of the DS option, i.e. for RECEPTION, spectrum 
>lab would have to modified to some extend, last not least it 
>would need an 'automated' method to build the correlation 
>patterns for the DS mode itself. 
>Since Markus has already provided his opera generator (thanks 
>for that!), it could be modified into a command-line driven 
>tool (exe or dll) which SL could invoke to create the 239-bit 
>message pattern for the correlators. I cannot promise too much 
>yet (being busy from too many other projects) but maybe  when 
>the new 'super-linear', moderate-power, switching mode 
>amplifier is finished I'll have a look at it again.
>
>All the best,
>  Wolf  DL4YHF .
>
>Am 27.12.2013 02:00, schrieb Bob Raide:
>
>
>	Markus;
>	 Can this take the place of DS option used with OPERA? 
>	 
>	
>________________________________
>
>	From: markusvester@aol.com
>	To: rsgb_lf_group@blacksheep.org; 
>rsgb_lf_group@yahoogroups.co.uk
>	Date: Fri, 27 Dec 2013 01:45:14 +0100
>	Subject: LF: Sending Opera with SpecLab
>	
>	
>	Today I finally found a simple solution to send Opera 
>sequences from SpecLab's digimode terminal. The nice thing 
>about this is that you can use all of SpecLab's powerful 
>functions, like samplerate correction, adjustable pulse 
>shaping, or high audio frequencies. This seems very useful, 
>especially in the context of possible future VLF Opera transmissions.
>	 
>	First you will need to create a text file consisting of 
>the 239 bit 1101... sequence for your callsign. This can be 
>generated from the PIC menu in the original Opera software. Or 
>you can use my little code generator tool at 
>http://df6nm.bplaced.net/opera/opera_generator.zip - simply 
>copy opgen.exe from the zip and type
>	 opgen mycallsign >opera.txt
>	into a command window.
>	 
>	In SpecLab, open the digimode terminal and configure it 
>for ASK with no encoding, as shown in the attached "_settings" 
>screenshot. The symbol rate has to be set to the inverse 
>dotlength for the desired Opera speed:
>	 
>	mode   dotlength    rate
>	          (seconds) (sym/s)
>	
>	Op-8    1.024s     0.9766 
>	Op-32   8.192s    0.12207
>	
>	Op-4H  65.536s   0.01526
>	 
>	Shaping time can be selected from hard (0%) to soft 
>(50%) keying. Then enter your desired audio frequency and use 
>"Load TX text" from the file menue to load your opera.txt 
>file. The sequence will appear in the TX window, and the 
>transmission can started by hitting the RX / TX button.
>	 
>	Best 73,
>	Markus (DF6NM)
>	 
>
>
>