User`s manual

SG-211 User’s Manual

4 Theory of Operation

The SG-211 tuner is built around the L network. An L

network as viewed from the transceiver may be

configured with the shunt reactance on the input or the

output as shown below:

4.1 No External Power Required

The SG-211 automatic antenna tuner is unique. It requires

no external source of power. This means that the unit can

be located remotely without the inconvenience of

additional wiring to provide power. For portable use, the

antenna tuner draws no power from station batteries.

Transmitter

Antenna

Transmitter

Antenna