Inside the Icom AH-4 Tuner
This paper describes the Icom AH-4 wide range antenna tuner. It attempts to compensate for a rather
sparse instruction manual by providing information on how to interface the AH-4 with any HF radio. In
addition, it also provides recommendations regarding antennas for fixed locations. An overview and
description is presented as well. Those who are interested in antenna tuners (the AH-4 in particular)
and those who just plain like to look into the guts of hardware and see how things work will want to
read on.
Chris, K9EQ
Table of Contents
1. Overview
2. AH-4 Design
4. AH-4 Radio Interface Operation
AH-4 Operation
K9EQ
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