包含用于甚高频、超高频和特高频电路设计的符号，包括电容测量器、不可逆设备、调制器、移相器、场极化设备和滤波器。

• Contains symbols for VHF, UHF, and SHF circuit design, including capacitance measurers, nonreciprocal devices, modulators, phase shifters, field polarization devices, and filters.