American Microwave Corp. offers Model AGTN-0320-60DD-100, a digitally controlled variable attenuator with 60 dB dynamic range. The unit is designed to operate between the 0.1 to 20 GHz frequency range with an insertion loss of 5 dB maximum, switching time of 1 uS typical (100 nS goal), and a VSWR of 2.2:1 maximum.