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@ -111,13 +111,13 @@ The transmitter will now shift frequency according the the level of the sound ca
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</p>
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<p>
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<font color="red">Importaint: We need to transmit correct polarity, use auto polarity detection always!</font>
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<font color="red">Importaint: We need to transmit correct polarity!</font>
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</p>
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<p>
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In my case, my sound card is connected to a transmitter, where a positive sample value causes a negative frequency deviation.
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This is why I need to flip the polarity of the signal, so I generate a negative sample value that causes a positive frequency deviation.
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I use the '-f yes' option or '--flip-polarity yes'.
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I use the '-F yes' option or '--flip-polarity yes'.
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Also it is essential to use a transmitter with direct access to the modulator and and a receiver with direct access to the disciminator.
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I use '-p -d' or '--pre-emphasis --de-emphasis' to process emphasis for audio signal in software.
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I use the calling channel (control channel) 334, which could also be used as traffic channel (voice channel).
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@ -343,7 +343,7 @@ The transmitter will now shift frequency according the the level of the sound ca
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</p>
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<p>
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<font color="red">Importaint: We need to transmit correct polarity!</font>
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<font color="red">Importaint: We need to transmit correct polarity! Always use 'auto' (default) to automatically detect the correct polarity.</font>
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</p>
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<center><img src="c-netz-burst_part.png"/></center>
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