There are 12 menu items, all related to RF circuits and systems. Cascaded noise figure, resistive attenuators, L & C, resonance, VSWR, power level conversions, etc.

Many of the calculations that must be done in RF work, such as determining the value of capacitor that will resonate at a certain frequency with an inductor, must be done often and it's just plain easier to have a tool that does it automatically. RF Toolbox is a computational tool that does many common calculations quickly, and also can provide insights that are not easily obtained otherwise. The menu operation is obvious, jumping from Hz to KHz to MHz is simple, trying many different values can be done rapidly, and the tedium of repeating the same kinds of calculations is thereby eliminated. It can be mastered with very little effort, and contains very useful context-sensitive help screens throughout.