Circuit knowledge

This is a Simple Switchable Vhf Active Antenna Circuit Diagram. This schema is the best schema of Vhf . How to build Simple Switchable Vhf Active Antenna Circuit Diagram ? Lets start! The AA-7 active antenna contains only two active elements: Ql (an MFE201 N-chanriel dual-gate FET) and Q2 (a 2SC2570 ripri VHF silicon transistor), which provide the basis of two independent, switchablc RF preamplifiers.