A system for confining and training a pet is provided. The system includes a stationary transmitter in communication with a receiver collar worn by a pet and the other configured as a portable transmitter for controlling the operation of the stationary transmitter. The stationary transmitter includes a correction signal generator and a warning signal generator which feed an amplifier having an adjustable amplification factor controlled by a processing device. The amplified correction signal is transmitted through the wire loop antenna via a transmitter. The normal confinement mode operation of the system is interrupted by a training signal from the portable transmitter. Upon receipt of a training signal, the processing device produces a signal corresponding to the desired deterrent signal and increases the gain of the appropriate amplifier thereby boosting the signal strength such that the entire confinement area is filled with the desired deterrent signal.