GP-Probe Nano L1
Pocket-sized wearable GNSS jamming detector and logger for field patrols and interference investigations
The GP-Probe Nano L1 is an ultra-compact, wearable GNSS interference detector for detecting and logging jamming activity in the GNSS L1 band. Weighing around 50 grams and measuring 113 × 31 × 15 mm in an IP65-rated enclosure, it monitors GPS L1, Galileo E1B/C, GLONASS G1 and BeiDou B1 signals and measures RF power across a dynamic range of +5 dBm down to −100 dBm. GPSPATRON states detection of a low-power 5 dBm jammer at up to 200 metres line-of-sight, or roughly 50 metres when the jammer is inside a vehicle.
The device operates standalone in two modes. In Detector mode it provides real-time alerts through sound, vibration and a 36-LED power scale, running up to 30 days of continuous operation on a charge. In Logger mode it silently records jamming activity autonomously at up to one measurement per second for up to 3 months. Charging is via USB Type-C, with a full charge in about 90 minutes from the 3.7 V 450 mAh LiPo battery.
Paired with an Android smartphone over the GPSPATRON Connect app, the Nano adds detection and signal-analysis modes, with localization, patrol and sentinel modes published as coming soon; GP-Cloud integration extends this to collaborative localization, patrol and sentinel operation across multiple units, feeding field observations into the same centralized monitoring platform used by GPSPATRON's fixed probes.
Applications published by the OEM include law enforcement (locating vehicles disabled by GPS jammers), security operations needing early warning of an attack preceded by jammer use, and protection of GNSS timing sources at critical infrastructure such as data centers, airports and cellular networks. For an airport, the Nano suits perimeter and airfield patrols, spot checks around timing and navigation equipment, and rapid confirmation of suspected interference incidents before fixed monitoring data is analysed. The unit ships with mounting kits for cars, motorcycles and bicycles, a NATO rail adapter, belt clip and quarter-inch quick-release adapter.
Technical specifications.
| Monitored GNSS signals | GPS L1; Galileo E1B/C; GLONASS G1; BeiDou B1 |
| Detection range | Up to 200 m line-of-sight (5 dBm jammer); ~50 m with jammer inside a vehicle |
| Operating modes (standalone) | Detector — real-time alerts; Logger — silent autonomous recording up to 1 measurement/s |
| Runtime | Up to 30 days continuous (Detector mode); up to 3 months (Logger mode) |
| Charging | USB Type-C, ~90 minutes to full charge |
| Included accessories | 1 m USB-C cable, ¼" quick-release adapter, car/motorcycle/bicycle mounting kits, NATO rail adapter, belt clip |
| Alerts | Sound, vibration, 36-LED power scale |
| Smartphone integration | Android via GPSPATRON Connect app; GP-Cloud integration available |
| RF power measurement range | +5 to −100 dBm |
| Battery | 3.7 V LiPo, 450 mAh |
| Enclosure rating | IP65 |
| Operating temperature | −20 to +60 °C |
| Storage temperature | −20 to +70 °C |
| Humidity | 0–90% RH non-condensing @ 40 °C |
| Dimensions | 113 × 31 × 15 mm |
| Weight | ~50 g |
| Warranty | 1 year (extended available), 1 year complimentary support |
Certifications.
Use cases.
- ›GNSS jammer detection patrols at airports
- ›interference incident investigation
- ›vehicle and convoy jamming early warning
- ›GNSS timing source protection checks

