Product Overview The ZHL-25W-272+ is a Class AB, high-power amplifier providing 25W saturated power over the 20 to 2700 MHz band, ideal for a variety of high-power test setups as well as applications including communications, radar and more. The ruggedly-designed amplifier provides unconditional stability and built-in self-protection against reverse polarity, excessive drive and overheating. The amplifier’s output stage is further protected in the event of a fault condition, allowing high power operation for up to 5 minutes into an OPEN or SHORT load (refer to the maximum input power specifications). Housed in a rugged aluminum alloy case measuring 5.6 x 8.8 x 1.2″, the unit features SMA connectors and an optional heat sink and fan attachment for cooling.