Latest 3.2 versionMore stable.
^^ Minimum power: 10 watt Below 10W cannot be tuned, please notice. ^^ Ready to useATU-500 Antenna Tuner with case, no need to assemble, developed by N7DDC ^^
About SO239: Before placing an order, please pay attention to the size and shape of the SO239 configured by ATU500W. If you think it is suitable for your device connection, then place an order. ^^ High-quality AccessoriesThe magnetic ring uses T130-2EW with low loss and low temperature rise, and its material uses German BASF6000 mesh 1-3 micron iron powder core. Performance is better than T130. All high-voltage capacitors use 4KV withstand voltage, NPO material ^^ What You Get1* ATU-500W Automatic Antenna Tuner assembled machine with case, 1* DC 5.5 x 2.1 power cord