VHF Mobile Amplifier, Take your 5 watt Bendix King EPH, GPH, DPH or Command Series Handheld and Boost it to 45 watts. This Unit Covers 150-174 MHz and Must Be Used With LAA0355 or LAB0356. 45 Watt RF Amplifier for Your Vehicle. Mobile AMP for medium duty usage. Includes mechanical carrier operated relay to allow receive signal to bypass amp. Powered by 11-15 VDC, negative ground. Maximum 1 dB insertion loss. Use with #10 power cable NOT INCLUDED. Boost your Bendix King Radio Handheld. Go from 5 watt's of output power from your LAA-0355 or LAB-0356 charging system and hook it to the input of the TPLPA3-1AC RF amplifier to get up to 45 watts of output power. Extend your portable coverage dramatically.