>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)
>>>
>>>
>>>
>>>
>>
>>
>
matched mw dipole.gif
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