Your circuit will operate at higher RF frequencies with this JAN2N918 RF amplifier from Microsemi. This product"s minimum DC current gain is 10@0.5mA@10 V|20@3mA@1V|20@10mA@10V. It has a maximum collector emitter saturation voltage of 0.4@1mA@10mA V. This RF transistor has an operating temperature range of -65 °C to 200 °C.