The TSA series USB spectrum analyzers can allegedly perform most of the basic tests of much more expensive bench-top spectrum analyzers. The series consists of three models: TSA4G1 (1MHz - 4.15GHz), TSA6G1 (1MHz - 6.15GHz), and TSA8G1 (1MHz - 8.15GHz). They accept signal levels into standard SMA input connectors from - 110 dBm to +30 dBm (input power up to 1 W) and feature a noise level as low as -110 dBm. Test data is displayed on the attached PC using the supplied software, with calibrated level, linearity, and frequency. Datasheets are available at http://www.saelig.com/product/M00149001.htm
Mini USB Spectrum Analyzers Measure Signals To 8 GHz
Saelig Co. Inc.