If you need to characterize RFID tags or make reflection or stimulus/response measurements on antennas or transceiver modules, you might be able to make use of a low-cost basic spectrum analyzer.

Intended for cost-constrained applications in R&D, manufacturing, maintenance, education labs, and bench repair, Agilent’s N9322C basic spectrum analyzer covers a frequency range of 9 kHz to 7 GHz ...

The N9322C, 7 GHz basic spectrum analyzer from Agilent, is designed for budget-constrained applications in R&D, manufacturing, maintenance, education labs, spectrum management, bench repair The N9322C ...

[MrCircuitMatt] has been doing a lot of radio repair recently, quickly realized having a spectrum analyzer would be a useful thing to have. Why buy one when you can build one, he thought, and he ...

The SIGLENT SVA1015X spectrum analyzer is a very powerful and flexible tool for various measurements within the frequency range from 9 kHz to 1.5 GHz. Great basic specifications are the base for all ...