For radio hobbyists, tinkerers, or anyone working with RF signals, this is a handy little variable frequency oscillator (VFO). It generates a clean, stable signal you can use for testing, calibration, or as a local oscillator in homebrew radio projects. The frequency range is wide: from 10 kilohertz all the way up to 220 megahertz. It has both AM and FM modulation modes, a bar graph to show signal strength, and 20 memory presets to save your favorite frequencies. The core uses a high-precision 0.5ppm TCXO clock for good stability. It runs on a built-in rechargeable battery (charged via the included USB cable) and has a simple control knob and buttons. The case is a mix of stainless steel and aluminum, so it feels substantial. It also supports I2C data output if you want to hook it up to another display or a chip like the SI5351. A versatile and compact tool for the amateur radio bench.
