Model 9102 is a portable spectrum analyzer from Boonton Electronics with frequency range of 100 kHz to 4 GHz and resolution-bandwidth filters ranging from 100 Hz to 1 MHz. It has a DANL of typically -130 dBm to 1 GHz and -135 dBm from 1 to 4 GHz. The reference level can be set from -100 to +30 dBm with 0.1-dB resolution. The analyzer, which weighs only 7 lbs, performs a wide range of one-button automatic measurements, including channel power, occupied bandwidth (OBW), and adjacent-channel power ratio (ACPR). For more information, visit the Boonton Electronics web site at