GOOZEEZOO ATU-100 EXT V3.2 Antenna Tuner Instruction Manual
- June 17, 2024
- GOOZEEZOO
Table of Contents
ATU-100AutomaticAntennaTuner
Attention: The core design data of this antenna tuner comes from the automatic antenna tuner open-source project of its original author N7DDC.
Technical characteristics (basic model) **
**
Permissible power supply voltage range: 10-15VDC
Maximum current consumption: 400 mA
Maximum working power: 100W
Maximum possible measured power: 150W
Minimum power required to start tuning: 5W
Minimum possible measured power: 0.1W
Measurement resolution up to 10 watt hours: 0.1W
Measurement resolution for power greater than 10 watts: 1W
Power measurement accuracy error: ± 10%
Maximum installed inductance: 8.53 μ H
Minimum installation step of inductance: 0.05 μ H
Maximum installed capacity: 1869 pF
Minimum capacitor installation steps: 10 pF
Typical consumption 100-200 mA
This product is pure manual welding, providing 3.1 program support with
SSD1306 controller, with a resolution of 128×32 pixels and a diagonal of 0.91
inch monochrome OLED display. This circuit contains a set of 7 inductors and 7
capacitors, which allows it to operate over a wider frequency range and
effectively cover the amateur 1/7 radio range from 1.8MHz to
50MHz.
Note: The white object is 704
silicone, which is a fixed hollow inductor and magnetic ring inductor.
Operating instructions
The DC socket is connected to a power supply of 10-15V DC, with positive and
negative voltage inside and outside. The POWER switch is in the open position,
and the radio power is set to 5W-10W. Long press and hold the RESET/TUNE
button, and the TUNE word will appear on the antenna tuner screen. At this
time, the continuous power of the transmitter can be adjusted automatically.
Short press the RESET/TUNE button, and the antenna tuner will release the LC
relay previously adjusted, and it will be in the straight through position.
For the sake of environmental protection and energy conservation, this antenna
tuner can sleep on the screen after 10 seconds of inactivity and no emission.
At present, this antenna tuner work is in manual mode: the relay only adjusts
after long pressing the RESET/TUNE button.
This antenna tuner can also work in fully automatic mode: there is no need for
a button. The system automatically starts adjusting when it detects that the
standing wave ratio is greater than 1.3:1 (this value can be adjusted).
The black and red terminals are experimentally used for adjusting long line
antennas.
Below the DC socket. There is a microswitch. After pressing the A/M button, in
AUTO mode, there is a “.” after the PWR value on the screen.
At this time, antenna tuner is in automatic mode, which immediately triggers
the start tuning mode as long as the standing wave ratio is detected to be
greater than 1:1.3. Press the A/M button again to turn off the AUTO mode and
the ‘.’ will disappear.
The Ver1.21 version adds an SX1308 boost circuit in the spare position of the
motherboard (these components need to be purchased by customers), which can be
switched between power supply modes through reserved SMT pads. And add an Auto
fully automatic mode interface on the motherboard to facilitate DIY grinding.
Note: The noise interference that may occur after adding this DC-DC boost
circuit is not used as a basis for product quality issues.
SX1308 is a fixed frequency, SOT23-6 enclosed current mode boost
converter, with a working frequency of up to 1.2MHz, allowing for smaller
specifications of peripheral inductors and capacitors. The built-in soft start
function reduces the starting impulse current. Internally integrated 80 mΩ
power MOSFET, with a maximum boost efficiency of 97%
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