By on March 25, 2017

Come out to Unallocated Space Tuesdays, April 4th though 25th, 2017 from 7pm to 10pm for an introduction to radio frequency (RF) signal analysis. This 4 week class will cover locating, identifying, demodulating, and decoding common RF signal types.

If you plan on attending the class, please fill out the survey here:

Week 1: We will make sure everybody’s system is working. We will decode some basic signals just for test purposes. If you are sure your Linux system is working with the tools mentioned below you can skip this session.

Week 2: We will cover the various modulation types and digital encoding schemes. This will include learning to listen for digital signals, and visually identify them on the waterfall.

Week 3: We will practice decoding several different types of signals. We will also touch on how to use the GNU Radio Companion.

Week 4: We will look at reverse engineering some FSK and ASK/OOK type signals. We will use different tools such as Baudline and Waveconverter

Please bring the following hardware items:

An SDR capable of receiving between 50MHz and 1GHz (almost all RTL-SDRs cover this range, and any of the more expensive SDRs will cover this range as well, except for the BladeRF)
An omni-directional antenna
“Aux cable” (3.5mm “headphone” connector on both ends)
A fairly powerful laptop or desktop (At least 2 cores clocked over 2GHz, 4GB RAM) Sorry, that old laptop you got for $50 at the hamfest won’t cut it.

Please have the following software installed BEFORE class:

Your favorite Linux distro on a dedicated partition. NO virtual machines! Linux beginners, please install Ubuntu.
Any drivers necessary to run your SDR
GNU Radio
pulse audio volume control

There are resources for how to install all of the above software online. Please have it installed before class, the network cannot handle everyone downloading that stuff all at once.

Due to the unpopularity of the CTF I may not host it this time. I will consider hosting it at a later date separate from the class if enough people request it.

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