User's Manual | ACOM 500S | 160-4
m Linear Power Amplifier
March 2023
S e c t i o n OPERATION | Page 37 of 66
4.4.
Operation with an External Antenna Tuner
At antenna SWR over 1.5:1, it is advisable you use an external ACOM tuner.
The ACOM 04AT Remote Automatic Antenna Tuner and Switch (see
Figure 4-1 | ACOM 04AT tuner mounting
) and ACOM 06AT Automatic Antenna Tuner and Switch (see
Figure 4-2 | ACOM 06AT antenna tuner
and switch (shown near 500S amplifier)
) are designed to work with our transistor (solid state) amplifier series and
can be connected to the
RF OUTPUT 1
of ACOM 500S as described in Sections
ACOM 04AT and 06AT tune antennas having SWR up to 3:1 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 manually 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.
Figure 4-1 | ACOM 04AT tuner mounting possibilities
Wall mounted tuner
Mast mounted tuner
Desk mounted tuner
Figure 4-1 | ACOM 04AT tuner mounting possibilities
ACOM 06AT tuner is designed for indoor use only! It can be located up to 100 m (330 ft) away from the amplifier,
using a single coaxial cable.
Figure 4-2 | ACOM 06AT antenna tuner and switch (shown near 500S amplifier)
Figure 4-2 | ACOM 06AT antenna tuner and switch (shown near 500S amplifier)
