NOTE:Recommended maximum power while tuning not above 30 watts. (after tuning you can set 100 watts and work on this power)
SWR greater than 1.1 will automatically activate tuning, and the minimum power has been changed from 5W to 1W.
After modification, it can be tuned below 5W.Too low value may result in insufficiently fine tuning (original default is greater than 5W auto tuning), please know before placing an order.
The latest firmware version is 3.2
New in the version 3.2
1.Fixed bug with continuous data transfer to the display.
2.Added a new ability to disable all relays along with the timer display. New cell 35-01 to activate the refunction. Display Off Timer setup – cell 32.You can use this future in your QRP setup where power consumption is critical.
3.Timeout for display reset increased to 2 seconds. This is required for some OLED displays with a very chain on the reset pin.
All use Samsung SMD capacitors, C-channel capacitors, we use Samsung 1000V high-voltage SMD capacitors (the original default uses 500V), and the PIC chip imported from the United States.
NOTE：Green and Blue board
The boards of this series of products are available in blue and green in our shop: the functions are the same, and the ones you receive may be green or blue, which is a surprise!
Order guide：
1.Machine introduction:
(1)Finished Machine: There are 2 modes: automatic mode and manual mode tuning function
SIZE: 140 x 88 x 38 mm (L*W*H)
1. Finished machine x1 (default SMA female connectors, it can be used after connecting the device to power supply.)
2. SMA to UHF connectors x 2
3. SMA to BNC connectors x 2
4. DC5.5 x 2.1 power cord x1 (0.75 square pure copper wire 50cm)
5. USB to DC2.1 power cord x 1 (Note that you need to use 9-12V for the ATU-100 to start. If you use a mobile power supply or a computer USB port to output power, you cannot start the ATU-100 because their voltage is too low.)
(2)Machine ——UHF Connector：There are 2 modes: automatic mode and manual mode tuning function
SIZE: 140 x 88 x 38 mm (L*W*H)
1. Finished machine x1 (default SMA female connectors, it can be used after connecting the device to power supply.)
2. DC5.5 x 2.1 power cord x1 (0.75 square pure copper wire 50cm)
3. USB to DC2.1 power cord x 1 (Note that you need to use 9-12V for the ATU-100 to start. If you use a mobile power supply or a computer USB port to output power, you cannot start the ATU-100 because their voltage is too low.)
NOTE :
1.DIY kit, need to have welding ability.
2. The firmware program has been burned.
3.SMT chip resistors have been soldered.
4.Circuit schematic and firmware, please contact us.
KIT of ATU (Automatic Antenna Tuner) developed by N7DDC
All information about project you can find on GitHub (N7DDC).
Power supply range: 10 – 15 VDC
Max current : 450mA
Max working power: 100 watts
Max measured power: 150 watts
Minimum power for tuning start: 1 watt
Recommended maximum power while tuning not above 30 watts. (after tuning you can set 100 watts and work on this power)
Minimum measured power: 0.1 watt
Step for measurement on powers under 10 watts: 0.1 watt
Step for measurement on powers above 10 watts : 1 watt
Power measurement accuracy : 10%
Maximum inductance set: 8.5 uH
Minimal step for setting inductance: 0.1 uH
Maximum installed capacity: 1870 pF
Minimal step for setting capacity: 10 pF
100 Watts tuner, 7×7 (7 capacitors x 7 coils) based on PIC 16F1938.
Dimentsion – 120 mm x 62 mm.
KIT included:
0.96 inch OLED display
PCB for ATU-100 7×7 HF autotuner
+ set of toroids:
– T68-2 (6pcs);
– BN43-202 (1pcs).
+ set of parts:
– PIC16F1938 (1pcs) soldered on PCB with default firmware v3.0
– 100R 2512 1% (4pcs).
– relay HK4100F-DC12V (15pcs)
3.DIY Kits:
Package 1:
The latest firmware version is 3.2（Please ignore 3.1 in the figure below，Please ignore 3.1 in the figure below, but the text on the figure has not been changed, it is actually version 3.2）
Include:
1. PCB motherboard x1. (SMD electronic components on the front and back have been soldered, and the latest version of the firmware has been burned)
2. Several plug-in electronic components and accessories. (User welding is required).
3. 0.96 inch OLED screen x1
4. UHF-KF female connectors x2 (also named SO239/SL16/PL259)
Package 2:
1. PCB motherboard x1. (SMD electronic components on the front and back have been soldered, and the latest version of the firmware has been burned)
2. Several plug-in electronic components and accessories. (User welding is required).
3. 0.96 inch OLED screen x1
4.TNC-KF connectors x2
Kit’s Pakage：
3.Assembled board：
The Version is 3.2
You will get the product shown in the picture (without battery)
