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User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
- The screen displays a frequency range showing the availability or absence of tuner settings for all
frequency segments in the current band, to which the amplifier is tuned. The light gray segments have a user
tuning stored in the tuner memory, and the black segments do not have one. The current operating segment,
which contains the working frequency of the transceiver, is enclosed in a thin orange frame, which moves as
the transceiver frequency moves from segment to segment.
- The numerical values displayed above the frequency range now show the boundaries of the
current operating frequency segment (rather than of the entire band, if no tuner is present). In front of the
values, there is a label reading "ATU Matched", "Memory Settings" or "ATU in Bypass", according to the tuner
mode at that time. After the values are displayed the number, the selectivity type and the name of the
currently connected antenna (see Section
antenna Nr. 2 with Regular degree of selectivity is selected. The antenna number may be from 1 to 4 and
each antenna may have different type, specified by the operator (up to four degrees of selectivity). The
antenna names after the number may also be edited (see Section
When a tuner is assigned (see Section
- The information area above the buttons is reserved for messages concerning the tuner;
- The BAND buttons (up and down) become SEGMENT;
- The TUNE and ANT buttons become available and can be used.
The tuner performs a quick tune-up using memorized data for the current operating frequency and antenna.
If there is no suitable setting in the tuner memory, the tuner stays in BYPASS mode.
3.2.2. SEGMENT UP/DOWN buttons (Second Function - BAND)
The two SEGMENT buttons with second function BAND only appear if no CAT interface is connected to the
transceiver.
- Pressing briefly either of the two buttons selects the next frequency segment in the respective
direction;
- Pressing and holding either of the two buttons for 1 second selects the next band in the respective
direction;
Simultaneously pressing the two buttons has no function.
When there is a CAT interface connected to transceiver, the buttons do not appear, because the segments
and bands are changed via CAT automatically, following the transceiver frequency.
3.2.3. TUNE button (Second Function - BYPASS)
- Pressing the button briefly starts the full tuning cycle of the tuner (see Section
). The button operates in both OPER and STBY mode, i.e., the tuner can be used with
FULL, QUICK and BYPASS
the transceiver in STANDBY mode;
- Pressing and holding the TUNE button for 1 second alternatively executes the BYPASS mode (see
Section
4.3 Tuning Modes: FULL, QUICK and BYPASS
BYPASS mode by returning the tuner setting (Use ATU);
October 2023
6.1 ANTENNA ASSIGNMENT Menu
4.2 Tuner Assignment and Unassignment
) of the tuner with the current antenna or reverts from
). For example, "A2R" indicates the
6.1 ANTENNA ASSIGNMENT Menu
):
S e c t i o n GETTING STARTED | Page 45 of 88
).
4.3 Tuning Modes:
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