mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-18 22:31:48 -05:00
90 lines
3.4 KiB
Markdown
90 lines
3.4 KiB
Markdown
|
<h1>HackRF input plugin</h1>
|
||
|
|
|
||
|
|
<h2>Introduction</h2>
|
||
|
|
|
||
|
|
This intput sample source plugin gets its samples from a [HackRF device](https://greatscottgadgets.com/hackrf/).
|
||
|
|
|
||
|
|
<h2>Build</h2>
|
||
|
|
|
||
|
|
The plugin will be built only if the [HackRF host library](https://github.com/mossmann/hackrf) is installed in your system. If you build it from source and install it in a custom location say: `/opt/install/libhackrf` you will have to add `-DLIBHACKRF_INCLUDE_DIR=/opt/install/libhackrf/include -DLIBHACKRF_LIBRARIES=/opt/install/libhackrf/lib/libhackrf.so` to the cmake command line.
|
||
|
|
|
||
|
|
The HackRF Host library is also provided by many Linux distributions and is built in the SDRangel binary releases.
|
||
|
|
|
||
|
|
<h2>Interface</h2>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h3>1: Common stream parameters</h3>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<h4>1.1: Frequency</h4>
|
||
|
|
|
||
|
|
This is the center frequency of reception in kHz.
|
||
|
|
|
||
|
|
<h4>1.2: Start/Stop</h4>
|
||
|
|
|
||
|
|
Device start / stop button.
|
||
|
|
|
||
|
|
- Blue triangle icon: device is ready and can be started
|
||
|
|
- Green square icon: device is running and can be stopped
|
||
|
|
- Red square icon: an error occured. In the case the device was accidentally disconnected you may click on the icon, plug back in and start again.
|
||
|
|
|
||
|
|
Please note that HackRF is a half duplex device so if you have the Tx open in another tab you have to stop it first before starting the Rx for it to work properly. In a similar manner you should stop the Rx before resuming the Tx.
|
||
|
|
|
||
|
|
The settings on Tx or Rx tab are reapplied on start so provided the half duplex is handled correctly as stated above these settings can be considered independent.
|
||
|
|
|
||
|
|
<h4>1.3: Record</h4>
|
||
|
|
|
||
|
|
Record baseband I/Q stream toggle button
|
||
|
|
|
||
|
|
<h4>1.4: Baseband sample rate</h4>
|
||
|
|
|
||
|
|
Baseband I/Q sample rate in kS/s. This is the device sample rate (4) divided by the decimation factor (6).
|
||
|
|
|
||
|
|
<h3>2: Local Oscillator correction</h3>
|
||
|
|
|
||
|
|
Use this slider to adjust LO correction in ppm. It can be varied from -10.0 to 10.0 in 0.1 steps and is applied in software.
|
||
|
|
|
||
|
|
<h3>3: Auto correction options</h3>
|
||
|
|
|
||
|
|
These buttons control the local DSP auto correction options:
|
||
|
|
|
||
|
|
- **DC**: auto remove DC component
|
||
|
|
- **IQ**: auto make I/Q balance
|
||
|
|
|
||
|
|
<h3>4: Bias tee</h3>
|
||
|
|
|
||
|
|
Use this checkbox to toggle the +5V power supply on the antenna connector.
|
||
|
|
|
||
|
|
<h3>5:RF amp</h3>
|
||
|
|
|
||
|
|
Use this checkbox to toggle the extra low noise amplifier (LNA). This gives an additional gain of 14 dB.
|
||
|
|
|
||
|
|
<h3>6: Device sample rate</h3>
|
||
|
|
|
||
|
|
This is the HackRF device ADC sample rate in kS/s. Possible values are: 2400, 3200, 4800, 5600, 6400, 8000, 9600, 12800, 19200 kS/s.
|
||
|
|
|
||
|
|
<h3>7: Rx filter bandwidth</h3>
|
||
|
|
|
||
|
|
This is the Rx filter bandwidth in kHz. Possible values are: 1750, 2500, 3500, 5000, 5500, 6000, 7000, 8000, 9000, 10000, 12000, 14000, 15000, 20000, 24000, 28000 kHz.
|
||
|
|
|
||
|
|
<h3>8: Decimation factor</h3>
|
||
|
|
|
||
|
|
The device stream from the HackRF is decimated to obtain the baseband stream. Possible values are:
|
||
|
|
|
||
|
|
- **1**: no decimation
|
||
|
|
- **2**: divide devcie stream sample rate by 2
|
||
|
|
- **4**: divide devcie stream sample rate by 4
|
||
|
|
- **8**: divide devcie stream sample rate by 8
|
||
|
|
- **16**: divide devcie stream sample rate by 16
|
||
|
|
- **32**: divide devcie stream sample rate by 32
|
||
|
|
|
||
|
|
<h3>10: Internal LNA gain</h3>
|
||
|
|
|
||
|
|
The LNA gain can be adjusted from 0 dB to 40 dB in 8 dB steps.
|
||
|
|
|
||
|
|
<h3>11: Rx variable gain amplifier gain</h3>
|
||
|
|
|
||
|
|
The Rx VGA gain can be adjusted from 0 dB to 62 dB in 2 dB steps.
|