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Updated Using OpenWebRX with a real input signal (markdown)

András Retzler 2016-03-19 21:01:19 +01:00
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Using-OpenWebRX-with-a-real-input-signal.md

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A workaround for this is to convert the real signal into a complex signal, as the DDC routines currently only work for a real signal.
In this example, we are using an audio card as a VLF SDR.
In this example, we are using an audio card as a VLF SDR:
```
samp_rate = 192000 / 2
start_rtl_command = "arecord -f S16_LE -r 192000 -c1 - | csdr convert_s16_f | csdr shift_addition_cc -0.25 | csdr fir_decimate_cc 2 0.005"
center_freq = 192000 / 2
samp_rate = 192000 / 4
start_rtl_command = "arecord -f S16_LE -r 192000 -c1 - | csdr through | csdr convert_s16_f | csdr shift_addition_cc -0.25 | csdr fir_decimate_cc 2 0.005"
format_conversion = ""
```