This in-line GaAs-FET receive pre-amp provides high gain and low noise amplification for weak receive signals. The KP-2 also has automatic RF- switching, which disengages the pre-amp any time it detects a transmission signal being emitted by the transceiver. The KP-2 pre-amp has an attenuator built into the circuit which can be selected by changing the position of a switch on the internal circuit board. This switch is set in the LOW level gain position at the factory. This has been included to prevent receiver overloading and subsequent intermodulation distortion that can come from very strong signals.