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HackRF plugin: added two sampling rates above 4.8 MS/s

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This commit is contained in:
f4exb 2016-03-07 01:51:42 +01:00
parent 61fdee1332
commit 837715fc0f
3 changed files with 3 additions and 3 deletions
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2
Readme.md
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@ -89,7 +89,7 @@ If you use your own location for libhackrf install directory you need to specify
`-DLIBHACKRF_LIBRARIES=/opt/install/libhackrf/lib/libhackrf.so -DLIBHACKRF_INCLUDE_DIR=/opt/install/libhackrf/include`
HackRF is better used with a sampling frequency over 8 MS/s. You can use the 9.6Ms/s setting that decimates nicely into integer kS/s sample rates. There are quite a few problems with narrowband work with this hardware. You may try various amplifiers settings to limit images and I/Q imbalance with varying success... The cheap RTL-SDR dongles usually do better.
HackRF is better used with a sampling rate of 4.8 MS/s and above. The 2.4 and 3.2 MS/s rates are considered experimental and are way out of specs of the ADC. You may or may not achieve acceptable results depending on the unit. A too low sampling rate will typically create ghost signals (images) and/or raise the noise floor.
<h2>RTL-SDR</h2>

2
plugins/samplesource/hackrf/hackrfgui.cpp
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@ -287,7 +287,7 @@ void HackRFGui::updateHardware()
m_updateTimer.stop();
}
unsigned int HackRFSampleRates::m_rates_k[] = {2400, 3200, 4800, 6400, 9600, 12800, 19200};
unsigned int HackRFSampleRates::m_rates_k[] = {2400, 3200, 4800, 5600, 6400, 8000, 9600, 12800, 19200};
unsigned int HackRFSampleRates::getRate(unsigned int rate_index)
{

2
plugins/samplesource/hackrf/hackrfgui.h
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@ -89,7 +89,7 @@ class HackRFSampleRates {
public:
static unsigned int getRate(unsigned int rate_index);
static unsigned int getRateIndex(unsigned int rate);
static const unsigned int m_nb_rates = 7;
static const unsigned int m_nb_rates = 9;
static unsigned int m_rates_k[m_nb_rates];
};