RTL-SDR dongle Shows DVB-T signal SDR based?

One of most popular and cheap hadrware in SDR is RTL-SDR, this dongle can I/Q sample with resoulotion 8bit ADC, it can too used DVB-T dongle, in this blog post we describe how RTL-SDR can received DVB-T signal and show in VLC media player?

 

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Startup Native C++ Android Project in Android Studio 2.2 or higher

In Android studio 2.2 or higher added implentation C++ beside Java. It is Great. C++ is most popular language for me. We want to in this blog post, describing  startup for writing hybrid Java ,C++  based application  in Android Studio 2.2 or higher. I declare i installed Android Studio 2.2 in Win8.1.

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AT91SAM7S64 in keil5 (II):

I want to in this post solve programer JLink error. I had not error with software JFlash v6.0.0.I have error with Keilv5. I too had same error with JFlashV6.12 . we know there are differenet version and clone of JLink in market. I used this method(changing driver JLink) , every thing is ok with Keilv5 and JFlash.

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Synchronizing Probelm in GFSK

I designed a  GFSK Transceiver in gnuradio-companion, when i start to TX,TX data with  HackRF One and RTL-SDR , i receive data approximately true, but data had some shifts in 0 and 1.

In Simulation i tested TX and RX for files of text and  wav. In it every thing is ok, but when i used omocomsdr source and sink for real world, i see shifting data that i received.

 

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DVBT project receiver probelm OOrestart aquisition d_freq_offset: -5 Od_freq_offset: -5

DVB-T protocol is great for transmition of digital video. In GnuRadio  we have gr-dvbt , you can install it easily in gnuradio. I reforemed TX and RX demo for using in HackRF One a open source hardware   in SDR. For TX and RX i used HackRF One.When i runned TX and RX i had below errors:

DVBT project receiver probelm  OOrestart aquisition  d_freq_offset: -5  Od_freq_offset: -5

 

 

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BB gain Vs IF gain Vs RF gain

Transceiver Gains:

Hi, I want to today describe BB,IF,RF gain in transrecievers in SDR hardwares like RTL-SDR,HackRF One,USRP,….

Radio transmitters and receivers are essentially interfaces between digital data (bits) and electromagnetic waves.This can be further divided to front-end processing and baseband processing.

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