![]() We are going to move towards 64-bit 4-core processors like the H5 or the H6. ![]() We forget the Orange Pi Zero which, following the treatment defined in GNU-RADIO, quickly risks running out of power. To use it, the Orange Pi solution is very interesting. The HackRF being developed in Open Source can be bought in China at Aliexpress for a hundred Euros. With the rtl_eeprom -h command, we have the corresponding help. You can reprogram this number by typing: rtl_eeprom -s 'numéro de série' The difficulty with RTL-SDRs is that they all carry the serial number 1 when they are manufactured. For a hackrf type in a terminal hackrf_info and retrieve the serial number and put it in the ‘Device Arguments’ box. In the case of several SDRs connected to the processing card, they must be identified. If you observe no further output, everything is fine. Info: This tool will continuously read from the device, and report if You can get the available gain values provided that the RTL-SDR was not started by an application. Only the RF gain parameter acts on the RTL-SDR. In general, expect less gain at higher frequencies. They nominally provide 14 dB of gain when on, but the actual amount of gain varies by frequency. In the off state, the amps are completely bypassed. The RX and TX, RF amplifiers have two settings: on or off.
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