Dear RTL developers,
I was not able find a way how file the issue with RTL base USB dongle . It behaves in the same way on Linux and Windows
The Problem: The constant observation of the spike on the tuned frequency in the ranges after 160MHz or so. Is it known issue or a HW defect? If it is in the software, please let me know any possible fix. The screen snapshot and USB information are attached.
$ rtl_eeprom Found 1 device(s): 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle Found Fitipower FC0013 tuner
Current configuration: __________________________________________ Vendor ID: 0x0bda Product ID: 0x2838 Manufacturer: Realtek Product: RTL2838UHIDIR Serial number: 00000001 Serial number enabled: no IR endpoint enabled: yes Remote wakeup enabled: no __________________________________________
73 Mikhail
Hi,
On 19.02.2013 15:56, Mikhail Popov wrote:
The Problem: The constant observation of the spike on the tuned frequency in the ranges after 160MHz or so. Is it known issue or a HW defect? If it is in the software, please let me know any possible fix. The screen snapshot and USB information are attached.
This is caused by the DC offset of the ADC inputs of the RTL2832, nothing you can do about that, apart from cancellation algorithms or simply offset tuning (so you don't have the signal you want to receive in the middle of the spectrum).
Regards, Steve
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Mikhail Popov -
Steve Markgraf -
Sylvain Munaut