Additional Features: Frequency range: 100 kHz to 7.1 GHz Handheld, battery-operated design Large daylight viewable transflective color display Built in pre-amplifier Lightweight Best in class Displayed Average Noise Level < -153 dBm typical in a 10 Hz resolution bandwidth at 1 GHz Quick Zoom-in, Zoom-out display in 1-2-5 sequence RBWs: 10 Hz to 3 MHz in 1-3 sequence VBWs: 1 Hz to 3 MHz in 1-3 sequence Automatic or manual input attenuator control Amplitude Accuracy +/- 0.5 dB typical Dedicated One-button measurements Trace Averaging Reference Level Offset Three traces Multilingual User Interface (English, Chinese, French, German, Japanese, Spanish, Korean, Italian) Capability to create custom languages using Master Software Tools and download the languages into the MS2721A Store up to 2000 measurement test set-ups Save up to 2000 measurement traces Alphanumeric labeling of saved measurements Automatic time and date stamp of saved data Rechargeable/field-replaceable Li-Ion battery 6 Markers plus 6 delta markers Multi-segmented upper and lower limit lines 50-ohm Interface standard (75-ohm interface capability - instrument internally corrects for adapter loss) RJ45 Ethernet 10/100 Base T and USB 2.0 Interfaces AM, FM and SSB demodulation with built-in speaker and headset jack. The Anritsu MS2721A is the most advanced ultra-portable spectrum analyzer on the market, featuring unparalleled performance and size at a modest price. Unprecedented in handheld battery powered spectrum analyzers, the sensitivity of the MS2721A delivers the ability to measure very low level signals. Coupled with a wide range of resolution bandwidth choices, you can configure the Spectrum Master to meet your most challenging measurement needs. As the spectrum becomes more and more congested, the ability to measure low level signals becomes more and more important not only for interference detection but also for wireless system planning.