The FL-2025 (25-watt), FL-6020 (10-watt) and FL-7025 (25-watt) Linear Amplifiers are designed to provide increased power for base and mobile operation with the FT-290RII, FT-690RII and FT-790RII All Mode VHF and UHF Transceivers, respectively. The MMB-31 Mobile Mounting Bracket provides a convenient mobile installation in which the Amplifier may be installed permanently, while the Transceiver may be easily slid in and out of the bracket for quick conversion to portable operation without the amplifier. Alternatively, the Amplifier may be left attached to the Transceiver for quick conversion to base operation.