The AR-75 amplifier features a slimmer, lighter, and lower-profile design, power supply voltage spike suppression, a DC/DC converter for wide DC input range, RF sensing, T/R switching, automatic level control (ALC), and protection against antenna mismatch and over-temperature and accidental polarity reversal. It covers the 30 – 512 MHz frequency band and utilizes six high speed auto switching filters to ensure harmonic suppression.