User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier
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| S e c t i o n OPERATION
4.3. Operation with an External Antenna Tuner
At antenna SWR over 1.5, it is advisable you use an external tuner.
The ACOM 04AT Remote Automatic Antenna Tuner and Switch (see Figure 4-1 ACOM 04AT Remote Automatic
Antenna Tuner and Switch) is designed to work with ACOM transistor (solid state) amplifier series, including the
ACOM 1200S.
Figure 4-1 ACOM 04AT Remote Automatic Antenna Tuner and Switch
Figure 4-1 ACOM 04AT Remote Automatic Antenna Tuner and Switch
It tunes antennas having SWR up to 3 automatically, thus providing an optimum load for the amplifier within
5 seconds with improved harmonic suppression at that. The four-way antenna switch is controlled
automatically or from the amplifier front panel.
The ACOM 04AT can be installed both in the shack and in a remote location (even out in the open, close to
the antennas). It can be distanced up to 100 m (330 ft) from the amplifier, using a single coaxial cable.
The connection of ACOM 04AT will make accessible specific features on the amplifier display that provide a
transparent operation by following frequency and antenna selection changes in less than 50 ms.
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