Willtek’s 9101 Handheld Spectrum Analyzer is a low cost, full-featured spectrum analyzer. With a frequency range up to 4 GHz, the 9101 can test all modern wireless local oscillators, plus the harmonics and spurs that can mix and break through into the pass-band. Its complete coverage of carrier and IF stages give the performance needed when other analyzers run out of bandwidth.

• Comprehensive feature set in one-button measurement.
• Easy-to-read screens make all the difference in finding signals.
• Speedy assessment of signal quality with marker and limit template capabilities.
• Get more out of digitally modulated signals through RMS channel power measurement functions.
• Accurate measurements in different RF environments due to external device compensation and impedance adjustment.
• Remote control via RS-232 and Ethernet.
• frequency range 100 kHz to 4 GHz
• sweep time 1ms to 250 s
• RBW 100 Hz to 1 MHz
• 6.5" high-contrast VGA TFT color display for outdoor use
• ethernet and RS 232 remote interface for easy remote operations
• only 2.9 kg light and 355 x 190 x 85 mm in size. 
• 1 year factory warranty