Software Defined Radio in a mini-binder
This example creates a low-cost, portable software-defined HAM radio using a Raspberry Pi and a small RTL-SDR USB radio adapter.
Hardware shown
Tablet Frame Kit for Raspberry Pi and Arduino, Model SA8, by Novel Design Lab
Samsung A8 tablet (2018)
Raspberry Pi 3
NooElec NESDR Nano 3 - RTL-SDR USB adapter
Bingfu 100MHz-1800MHz 1090MHz UHF VHF HF 5dBi Magnetic Base SMA Male MCX Antenna
Power supply for R-Pi: lithium battery expansion board RPI power pack v1.2 with USB cable (v2.x not compatible)
3-Ring Mini Binder, Logo, Kraft by Novel Design Lab
Miscellaneous items: microSD card, headphones
Software
Installed on Raspberry Pi:
Raspbian with desktop https://www.raspberrypi.org/downloads/raspbian/
WiFi access point installed (per Raspberry Pi Foundation instructions): https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md
Some settings: enable VNC server (Raspberry Pi Preferences); enable VNC password (VNC Server options); set screen size to best-fit tablet (Raspberry Pi preferences)
Install RTL-SDR drivers and Gqrx radio software: follow instructions https://ranous.files.wordpress.com/2018/02/rtl-sdr4linux_quickstartv2-18.pdf
Installed on tablet:
From Google Play Store: RealVNC Viewer
Amazon Fire tablet, option 1: Remote Desktop Manager (Amazon Appstore)
Amazon Fire tablet, option 2: install Google Play store: https://www.laptopmag.com/articles/get-google-play-on-fire-tablet then install RealVNC Viewer (Google Play Store)
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