8 bands: 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz; 18MHz; 21MHz; 29MHz Emission efficiency: higher than 85% ( 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz); higher than 80% (18MHz and 21MHz); higher than 70% for 29MHz Connect to PC, use FT8, JS8, FT4 and other digital mode software control, support CW automatic decoding It can reach 3-5W power in 8 bands and can freely upgrade the PA module (TO-220). High-precision TCXO for KDS, frequency accuracy 1PPM, frequency stability 0.5PPM core board, RF PA board and ATU board to avoid own signal interference. Ultra-small size: 100 x 90 x 57mm/3.9 x 3.5 x 2.2 Inch (without protrusions) All parts use 100V C0G/NP0 capacitors Use original LM4562 or LM833 or LT6231 op amp chip interfaces: HEADPHONE, PTT OUT, MIC/PTT, SPK/MIC BNC antenna interface (with BCN-SL16 adapter, easy to match antenna) External power supply: 12.6VDC (13.8VDC power adapter) Material: Metal + Plastic colour: black Package Contents: 1 x Main Unit uSDX_ATU Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.