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User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
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/DWN 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);
- While the tuner is in BYPASS mode, it does not retune when frequencies and bands are changed,
and the antenna change rules are retained as assigned by bands in the table of the ANTENNA ASSIGNMENTS
menu (see Section
6.1 ANTENNA ASSIGNMENT Menu
- When the tuner reverts from BYPASS mode, it responds to the actual frequency and antenna at
the time of return. If there is a memorized setting for the current frequency segment and antenna stored in
the tuner memory, it is executed and the segment range is displayed again, with the numerical values of the
boundaries for the frequency segment;
- If there is no setting for the actual frequency segment and antenna stored in the memory at the
time of return from BYPASS mode, the tuner stays in BYPASS mode until the operator starts a full tuning
cycle, using the TUNE button or until the antenna and/or frequency are changed with ones with a tuning
stored in the nonvolatile tuner memory.
May 2021
4.2 Tuner Assignment and Unassignment
) of the tuner with the current antenna or reverts from
);
):
S e c t i o n GETTING STARTED | Page 33 of 72
4.3 Tuning Modes:
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