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sdr:fm

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sdr:fm [2015/08/22 21:53] – Better fm broadcast. rsdr:fm [2015/09/06 11:19] (current) – mkie
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-= FM Radio stations - Reception+= FM Radio 
 + 
 +== FM Radio Reception
    * Requires GNURadio    * Requires GNURadio
-   * Requires either an extra antenna or pressing a finger on the upper right corner where the antenna is usually soldered (then you are a human antenna ;-) )+   * Requires either an extranal antenna(!) or pressing a finger on the upper right corner where the antenna is usually soldered (then you are a human antenna ;-) )
    * Example Script: [[https://github.com/muccc/sdr-workshop/blob/master/fm_receive/fm-example.grc|FM Radio Example]] (must be opened with GNU Radio Companion)    * Example Script: [[https://github.com/muccc/sdr-workshop/blob/master/fm_receive/fm-example.grc|FM Radio Example]] (must be opened with GNU Radio Companion)
    * The script can be started via the arrow in the middle of the menu    * The script can be started via the arrow in the middle of the menu
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    * The Frequency can be adjusted via the FFT Plot that opens when the script is started    * The Frequency can be adjusted via the FFT Plot that opens when the script is started
  
-==== FM Radio stations - Broadcast+== FM Radio Broadcast
  
 FM Broadcast can be illegal in your country depending on which frequency you broadcast. Be sure to check the local laws before broadcasting. FM Broadcast can be illegal in your country depending on which frequency you broadcast. Be sure to check the local laws before broadcasting.
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 Explanation: Explanation:
  
-The audio source has the device name **pulse* which means it will appear as a recording device for pulseaudio. It uses a sample rate of 48KHz, which is a common sample rate for an audio output. It could have been 44.1KHz. It's set in the **audio_rate** variable.+The audio source has the device name **pulse** which means it will appear as a recording device for pulseaudio. It uses a sample rate of 48KHz, which is a common sample rate for an audio output. It could have been 44.1KHz. It's set in the **audio_rate** variable.
 The audio signal is passed to the **WBFM Transmit** module which gives the frequency modulated signal as the output. Its options **Audio Rate** and **Quadrature Rate** are the input sampling rate and the output sampling rate, respectively. The audio signal is passed to the **WBFM Transmit** module which gives the frequency modulated signal as the output. Its options **Audio Rate** and **Quadrature Rate** are the input sampling rate and the output sampling rate, respectively.
  
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 <note tip> <note tip>
 The sample rates supported by the rad1o can be listed using the hackrf_transfer command: The sample rates supported by the rad1o can be listed using the hackrf_transfer command:
-# Sample rate in Hz (8/10/12.5/16/20MHz, default 10MHz).+ 
 +## Sample rate in Hz (8/10/12.5/16/20MHz, default 10MHz). 
 </note> </note>
sdr/fm.1440280410.txt.gz · Last modified: by r