Acom AOM 04AT User Manual page 73

User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
- The cable impedance from the radio station to the remote unit may be other than 50 Ohm
or may be faulty or disconnected;
- The transceiver power may be modulated or unstable (it should be unmodulated carrier);
check for loose or contaminated connectors;
- There may be a blown fuse F1 at the tuner (see Section
f) If you get a
message, then most probably the cable connection from the amplifier to the tuner is unstable.
Check the cable DC resistance (see Section
Check if the panel socket holds the cable pin tightly and there is no solder buildup on the pin
tip. Clean and fasten the male and female connector parts carefully. Check the same at both
the amplifier and the tuner sides;
g) If the associated tuner menus are unavailable on the amplifier, check whether the tuner is
assigned (see Section
described in Point
October 2023
COMMUNICATION TO ATU/ASEL FAILING
4.2 Tuner Assignment and Unassignment
above.
f)
7.3 Fuse Replacement
8.1.10 Maximum Length of the Input Coaxial Cable
) and also check the cable as
S e c t i o n MAINTENANCE | Page 73 of 88
);
).