if you would like a twin display on Linux you can use pihpsdr.(sdr program for Raspberry Pi)
To build pihpsdr on other platforms all that should be required is to comment out the GPIO. ( pihpsdr. Make file.Line Number 7)
From this GPIO_INCLUDE=GPIO to this, #GPIO_INCLUDE=GPIO
If you do not have git already installed then enter the following command:
sudo apt-get install git
Create a directory for cloning the source into:
To download the source code enter the following commands:
git clone https://github.com/g0orx/wdsp
git clone https://github.com/g0orx/pihpsdr
(most of the above taken the build instructions, g0orx/pihpsdr)
After download,the build instructions will be in git/pihpsdr/release/documentation/pihpsdr-build.pdf.
The following two lines are not required.
sudo apt-get install wiringPi
sudo apt-get install pigpio
I am using Peppermint Linux..
Also you can run at 384000 sample rate (not achievable with raspberry pi.)