Soapy HackRF Source

This block controls the HackRF One software defined radio. The HackRF One tunes from 1 - 6000 MHz, provides 8-bit digitizing, and sample rates up to 20 MHz over a USB2 connection. This block controls the following parameters:

• Center frequency: (1 MHz - 6 GHz).
• Sample rate: up to 20 MHz.
• RF amplifier: +14 dB when on.
• IF amplifier: up to 40 dB. This controls an amplifier just before the quadrature demodulator (conversion of real to complex signal).
• Video gain amplifier (VGA): up to 62 dB. This controls an amplifier just after the quadrature demodulator. NOTE: "Video" here does not mean "moving pictures"; rather, it is an older term used for baseband signals.

Board view of the HackRF One. The RF Gain value controls the RF amplifier, while the IF Gain and VGA Gain control the RF transceiver.

Parameters

(R): Run-time adjustable

Output Type

options: [Complex Float32, Complex Int16, Complex Byte]

Device arguments

dtype: string

Sample Rate

default: samp_rate, allowable values are 1 - 20 MHz in 1 MHz increments.

Bandwidth (0=auto)

default: 0. NOTE: In GRC 3.10, this does not appear to work properly and needs to be set manually. Easiest method is to set it to the sample rate.

Center Freq (Hz)

default: freq, allowable values are 1- 6000 MHz.

Amp On (+14 dB)

default: False, when set to True, the amplifier provides +14 dB of gain and ~2 dB of noise figure.

IF Gain (0dB - 40dB)

default: 16

VGA Gain (0dB - 62dB)

default: 16

Example Flowgraph

This flowgraph uses the HackRF One to tune in the USA's NOAA Weather Radio service.

Example Output

The flowgraph will produce a display similar to that below.

The specific display of signals is restricted to the United States and depends on the antenna and location.

Source Files

C++ files

TODO

Header files

TODO

Public header files

TODO

Block definition

soapy_hackrf_source.block.yml