0-12 ghz wideband detector with memory price

One strong candidate is the JJN Digital PRO-W12DX Wideband Digital Pocket RF Detector (0-12 GHz with Memory Log):

• Frequency range: ~1 MHz to 12 GHz.

• Memory log: Stores up to 1000 events (time/date, freq, duration, signal strength).

• Live graph/“Livescan” mode for ~8 minutes of plotted data.