... controlled attenuator, compact design, and single 5V power supply, with I2C and SPI control interface, also LCD display and key ... -UPC860H and JH-UPC860L are full channels frequency agile up-converter, adapting precision aluminum shell by CNC, the shielding performance ... is superior. JH-UPC860H is high output (60dBmV) with 30dB adjustable range, power detection, LCD screen interface, and ...