The KBTR0204M43A from KeyLink Microwave is a RF Amplifier with Frequency 225 to 400 MHz, Gain 10 to 45 dB, Noise Figure 2 dB, Output Power 10 to 43 dBm, Output Power 0.01 to 19.95 W. Tags: Power Amplifier. More details for KBTR0204M43A can be seen below.