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TestingMakeFile	This is a major architectural change. It's based on STM32CubeMX building a Makefile project with a lot of the configuration already done automatically. The reasoning being that they'll get right on the first try what I have to torturously fiddle with. And the result? With minimal effort, I already have a build that is more portable to develop on, uses the latest drivers, includes FreeRTOS, and I've already got DMA video working pretty much perfectly (though not 100% optimized and tested). This is also giving me a convenient opportunity to massively clean up my code and just a few tricks I've learned since writing the old code. So far so good!! BUT! It can't do any radio like things yet, none of that is implemented at al, no interface, no audio, etc.	2019-05-24 15:28:07 -06:00
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README.md	Updated README	2021-01-18 17:40:23 -05:00

README.md

PSDR

PortableSDR - A Stand Alone HF Software Defined Transciever. Hackaday.io Link

The PortableSDR is an all-in-one solution for ham operators, hikers, backpackers, and DIY enthusiasts who are looking for an open-source QRP (low-power) radio for communication. It is a fully stand-alone HF/Shortwave Software Defined Radio (SDR) Transceiver and includes a Vector Network Analyzer and Antenna Analyzer as well as GPS, perfect for portable operations in a variety of conditions. It is designed to be a flexible platform for development, a learning aid, and and a useful instrument for electronics enthusiasts.

Features

Coverage from 0 to 35MHz
Waterfall display that lets you see radio signals
Receives AM, USB (Upper Side Band), LSB (Lower Side Band), and Morse code (CW)
Modulates USB and LSB signals
Variable bandpass filter

Hardware

Powerful ARM processor
Color LCD display
Dual DDS frequency Synthesizers
Quadrature Sampling Detector & Exciter
Digitally controllable instrumentation amplifiers
Morse Code key (the "Giblet" on the bottom right corner of the enclosure)
Magnitude & Phase measurement chip (for VNA and antenna analysis functions) with Impedance Bridge
Dual SMA connectors, smartphone style earphone/microphone connector, and USB port
GPS
Built in Microphone and Speaker
Internal Lithium Polymer battery with charger and high efficiency switching regulator
MicroSD slot
Pads for grabbing raw I/Q signals, both in and out.

Why did I make it?

I'm an avid backpacker and radio enthusiast. To me there is something exciting about making contact with others from remote locations where cell phones and the internet can't reach. I wanted an advanced radio that was ideally suited to tough environments. That meant I it needed to be very compact, integrated, and durable. As an engineer, I wanted an open platform that really takes advantage of the hardware and has the potential to grow and be used for other applications.

There are numerous, excellent radios out there, but none offered the combination I wanted. The best radios are closed source, larger, and expensive, while most open designs are very basic and lacking in flexibility.

Contributing

Please read our Contributing.md for ways to help keep this project going.