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Re: LF: mw activity

To: [email protected]
Subject: Re: LF: mw activity
From: "C. Groeger" <[email protected]>
Date: Sat, 28 Dec 2013 11:19:04 +0100
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Clemens,
Thanks for nice report!
I'm very curious about your signal!
Will you use the dipole for xmitting?
Will be a big signal with that Ant!
73, df5qg

Christian Groeger

Clemens Paul <[email protected]> schrieb:

> 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: [email protected] 
>>[mailto:[email protected]] On Behalf Of wolf_dl4yhf
>>Sent: Friday, December 27, 2013 12:17 PM
>>To: [email protected]
>>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: [email protected]
>>      To: [email protected]; 
>>[email protected]
>>      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)
>>       
>>
>>
>>
>
>
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