ATU-10 ATU10 QRP By N7DDC ATU-10 Tyny QRP Automatic Antenna Tuner 1.4 Version Tuner

Please Click Here to Download the English User ManualDescription The control button has only 3 functions A short press resets the tuner and sets all relays to their initial state in which all reactive elements are disabled and do not affect the signal flow through the tuner A long press causes the tuner to enter the tuning modeA very long press for more than 5 seconds causes the firmware version to be displayed on the display Display The display mainly shows the current transmitter power and SWR in the transmitter cable and sometimes briefly indicates the modes Built in battery The tuner is built on IM41 bistable relays which means that a significant current is consumed by the tuner only for a short time during tuning in rest mode the tuner s relays retain their state for an arbitrarily long time without consuming power The built in battery consists of two Li Ion 14500 batteries connected in parallel The best examples of these SANYO have a capacity of 800 mAh each the worst ones are usually 400 mAh The tuner has 3 power consumption modes the operating mode when the display indicates the parameters lasts 5 minutes after which the tuner falls asleep and the display turns off You can wake him up with a short press on the button After 30 minutes of sleep the tuner turns off completely and you can turn it on by holding the button for a long time more than 3 seconds The current consumption in the operating mode is 12 mA in the sleep mode 170 μA in the off state