Calibrating your DVB-T dongle with R820T(2) chip
First: Installation of RTL-SDR

sudo apt-get update
sudo apt-get install cmake build-essential libusb-1.0-0-dev
cd ~
git clone git://git.osmocom.org/rtl-sdr.git
cd rtl-sdr
mkdir build
cd build
sudo make install
sudo ldconfig

Second: Installation of kalibrate-rlt

cd ~/src
sudo apt-get install libtool autoconf automake libfftw3-dev
git clone https://github.com/asdil12/kalibrate-rtl.git
cd kalibrate-rtl
git checkout arm_memory
sudo make install

Make sure the RTL stick is running for few minutes to let it warm-up. Get a first rough ppm offset estimation with: Read more