Sorry Clemens,
I don't understand how you matched the dipole via 1,5 nF.
Can you explain that to me?
73
Christian Groeger
Clemens Paul <[email protected]> schrieb:
> >Will you use the dipole for xmitting?
>
>For sure,look at the matched feeding point impedance.
>Matching is done with one single 1,5nF cap.
>
>73
>Clemens
>DL4RAJ
>
>
>>-----Original Message-----
>>From: [email protected]
>>[mailto:[email protected]] On Behalf Of C. Groeger
>>Sent: Saturday, December 28, 2013 11:19 AM
>>To: [email protected]
>>Subject: Re: LF: mw activity
>>
>>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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