Anritsu MS2661C

This used Anritsu MS2661C spectrum analyzer is a benchtop unit that covers a wide frequency span with reliable amplitude accuracy, making it a workhorse for RF and microwave signal characterization in service and calibration labs. It has been kept in solid operating condition and shows typical light cosmetic wear consistent with normal lab use, but all core functions have been verified prior to listing. The unit includes standard accessories and is ready to integrate into an existing test bench. The analyzer supports precise measurement of spurious signals, harmonics, and modulation characteristics, which makes it useful for engineers validating transmitter performance or troubleshooting interference issues. Its stable local oscillator and low phase noise allow for confident measurements even on weak or closely spaced signals. Many technicians favor this model for its straightforward front panel layout and dependable long-term calibration history. This is a great fit for laboratories, repair shops, or educational institutions that need a proven signal analysis tool without the premium price tag of newer models. It arrives tested and ready to ship, and it continues to be actively used in RF test environments worldwide despite its age. Buyers seeking a dependable legacy analyzer for general purpose spectrum work will find this a solid choice.