The MRF377H from NXP Semiconductors is a RF Transistor with Frequency 470 to 860 MHz, Gain 18.2 dB at 18.2 MHz, Power 235 W, P1dB 235 W, Supply Voltage 32 V. More details for MRF377H can be seen below.
450 Watt, 50 Volt, 3.1 to 3.5 GHz, GaN RF IMFET
15 Watt, 50 Volt, DC to 4 GHz, GaN RF Transistor
15W, 300 MHz to 1.215 GHz, GaN RF Input-Matched Transistor
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