Just for reference on the LCD Screen:
3.5" touch screen:
Part# MP13501
https://www.waveshare.com/3.5inch-rpi-lcd-a.htm
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Commands to terminal
sudo ./LCD35-show
/\ will turn the screen on every time powered on
sudo ./LCD-hdmi
/\ will turn off the LCD screen and revert back to HDMI

-Rotation-

cd LCD-show/
sudo ./rotate.sh 90

DSD 1.7 is available at:

https://github.com/szechyjs/dsd

There are several rtl-sdr dongles available in several places:

https://www.google.com/shopping/product/1?client=opera&q=rtl-sdr+dongle&prds=epd:8422115039506151134,eto:8422115039506151134_0,pid:8422115039506151134,prmr:1&sa=X&ved=0ahUKEwjHmLaCza_wAhXJVc0KHY7qCcUQ9pwGCAU

Is the one that I use.