The SW 18 from Prana is a RF Amplifier with Frequency 800 MHz to 4 GHz, Gain 47 dB, Gain Flatness ±5 dB, Output Power 40.79 to 41.14 dBm, Output Power 11.99 to 13 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for SW 18 can be seen below.