Some things you can find there -CB & Ham radios, Walkie-talkie (GMRS/FRS) radios and Shortwave & multiband radios.
RadioShack- Audio Video Electronics
The company was started as Radio Shack in 1921 in Boston, Massachusetts, by two brothers, Theodore and Milton Deutschmann, who wanted to provide equipment for the cutting-edge field of amateur, or ham radio.
Theodore and Milton Deutschmann opened a one-store retail and mail-order operation in the heart of downtown Boston. They chose the name, “Radio Shack,” which was a term for the small, wooden structure that housed a ship’s radio equipment. The Deutschmanns thought the name was appropriate for a store that would supply the needs of radio officers aboard ships, as well as “ham” radio operators.
The first 40 years – RadioShack Corporation – Wikipedia
“I present, below, a collection of projects I have worked-on over the past few years. For over a decade, I had taught both embedded systems (microcontroller technology) and digital signal processing and practice what I preach….”
Professor Mark Csele – Projects and Hobbies
Nixie Thermostat – A heating and cooling thermostat employing technologies spanning fourty years from the unique Nixie tube display, circa 1960’s, to a PIC 18F microcontroller, circa 2006.
A High-Powered Power Backup Inverter – The working prototype of the 2 KVA inverter is complete. Fed from an array of lead-acid cells totalling 600 Ah (at 12 Volts), it easily drives real-world loads such as single-phase motors. The inverter has been tested and found to operate at an efficiency of between 71% and 82% driving a variety of both inductive and resistive loads