Amplifier-module, Toshiba, BA2076B, 
Input: 2.92mm(K), output: WR28 (Transitions WR28-to-WR42 and from WR42-to-SMA available on request), 
Vb1 = +5V, Vb2 = -5V (by variing Vb2 = -2 ... -5V gain and output power could be adjusted).

Broadband gain profile: 10dB 21-37 GHz, 20dB 21.8-35.3 GHz, 25dB 22.4-32.4 GHz, 30dB 22.9-31.3 GHz, 35dB 25.0-30.4 GHz, 40dB 26.0-29.0 GHz, as measured with a Flann Microwave 22094-KF20 WR28-to-2.92mm coax-transition at the output port. These values were measured at one arbitrarily taken sample and cannot be guaranteed for all four available modules. 

Measured at 24 GHz: Gain: More than 30 dB, output power: More than 100 mW.