RF & GPS Bug Detection

Tools for finding transmitting devices — wireless cameras, room bugs, GSM devices and GPS trackers — across the bands where they operate.
Match the tool to the band. No single antenna or detector covers the whole spectrum well. Broadband near-field detectors are the general-purpose starting point. Low-band antennas improve sensitivity between roughly 80 and 700 MHz, where analog transmitters and 315/433 MHz devices live. Microwave antennas extend range above 2 GHz for Wi-Fi, Bluetooth, LTE and most modern wireless cameras. A thorough sweep runs the low band first, then repeats on the high band.
GPS trackers are their own problem. Many report in short bursts, minutes or hours apart, so a detector held to a vehicle for thirty seconds proves nothing. Finding them reliably means a physical search of the usual mounting points — wheel wells, bumper cavities, under seats, the OBD port — with the RF sweep as a supporting step.
How to sweep. Switch off your own transmitters first, then work slowly and close to surfaces. Near-field detectors lose signal fast with distance, which is what lets you localise a source. Expect legitimate devices to alert and work by elimination.
The limit worth knowing. Nothing in this category finds a device that records to internal storage or is switched off during your sweep. If you believe you are genuinely being monitored, bring in a licensed team before you disturb the scene: technical surveillance countermeasures.