The SHF F840 A from SHF Communication Technologies is a RF Amplifier with Frequency 70 kHz to 55 GHz, Gain 10 to 11 dB, Input Power 4 to 7 dBm, Supply Voltage 8 to 12 V, Operating Temperature 10 to 50 Degree C. Tags: Differential Amplifier. More details for SHF F840 A can be seen below.