Spectrum Analyzer, 9kHz-2.6GHz - The R3361A is a compact and lightweight spectrum analyzer with uses a synthesized technique to cover wide frequency bands. Total level accuracy of 1 dB. 1 Hz resolution synthesizer and frequency counter. Unique sound monitor and marker pause modes. Manual sweep function for spot measurement. 120 dB dynamic range CRT display. Create your own unique menus. Fast measurement with measuring window function.