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HF/6M Ground-Plane Vertical
Convert your mobile antenna into a ground plane base
Put your amplifier and power supply out-of-the-way
It can be used up to 1000MHz
They can also be used to replace your current automatic screwdriver whip for a more highly efficient fixed mobile operation
MFJ-3507, BOOK, PRACTICAL RF DESIGN MANUAL MFJ_Wire HF/6M Ground-Plane VerticalBy the late Doug DeMaw, W1FB. A wealth of information on circuits, including transmitter and receiver fundamentals, mixers, balanced modulators, detectors, IF amplifiers, filters, AGC systems, frequency control systems, small signal RF amplifiers, large signal RF amplifiers and more. Many useful circuits to build.