FlexSpec X8400 is a configurable gamma/neutron detection, isotope-identification and alarm-mapping family for vehicle, maritime, airborne and fixed-site use. BTI offers Tahoe-integrated and transferable Mobile configurations. Each detector module combines a 2 × 4 × 16-inch NaI gamma crystal with a lithium-based neutron detector; systems scale to fourteen modules. Published configurations have materially different mounting envelopes: a four-module mobile package is approximately 235 lb, a two-module maritime pod approximately 125 lb, and a four-module airborne pod approximately 215 lb. These are manufacturer configuration values, not a single interchangeable platform specification.
The May 2022 datasheet rates operation at −30 to +55°C and supports GPS-tagged ANSI N42.42 reachback. An April 2026 Los Angeles proposal specifies four Maritime 4GN systems, illustrating a concrete buyer configuration; the reviewed attachment does not establish delivery or acceptance.
Technical detail
Core features
Gamma spectroscopy, neutron counting, isotope identification and left/right directionality with dynamic background compensation
Up to fourteen modules; each uses NaI gamma detection and 6LiF/ZnS neutron detection without helium-3
Four-module mobile kit: approximately 235 lb and 24 × 18 × 18 inches without mounting stands; two-module maritime pod: approximately 125 lb and 30 × 20 × 14 inches; four-module airborne pod: approximately 215 lb and 60 × 20 × 14 inches
Wi-Fi, Ethernet, RS-232, USB and optional cellular interfaces; GPS time/location and ANSI N42.42 (2020) reports
Battery, 10–30 VDC or 115 VAC power; −30 to +55°C operating and −40 to +70°C storage ratings
Gamma spectroscopy
Neutron detection
Isotope identification
Radiation mapping
Reachback
Use & integration
Recorded applications
Radiological search, isotope identification and response mapping
Vehicle, port and maritime radiation screening
Airborne survey and fixed-site monitoring
These describe the reviewed application scope, not confirmed deployments, released requirements or procurement eligibility.
Evidence of maturity
Commercial product family with manufacturer specifications. Los Angeles staff recommended four Maritime 4GN systems in April 2026; reviewed evidence does not establish executed purchase, delivery or buyer acceptance.
Commercial availability
Integrated or transferable kits and tailored detector configurations offered by BTI; obtain a configuration-specific quote and integration plan.
Integration and verification
Readiness
A technology readiness level is not established by the reviewed public sources.
Reviewed connections
No reviewed Mission area or released Defence need connection is currently published.
Original sources 5 linked records
These records support this capability and its published Mission area and Defence need connections. A source count is not a count of independent confirmations.
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · summary
X8400 interfaces include Wi-Fi, Ethernet, RS-232, USB and cellular; GPS-tagged and timestamped data can be supplied in ANSI N42.42 (2020) reachback format.
Supports: Capability · core features
BTI specifies X8400 operating temperature -30 to +55 degrees C and storage -40 to +70 degrees C.
Supports: Capability · summary
BTI specifies X8400 operating temperature -30 to +55 degrees C and storage -40 to +70 degrees C.
Supports: Capability · technical tags
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
BTI lists 4GN Mobile at approximately 235 lb, 2GN Maritime with pod at approximately 125 lb and 4GN Airborne with pod at approximately 215 lb; internal aircraft mounting and custom fixed-site configurations are offered.
Supports: Capability · technical tags
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · technicaldomainslugs
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · technicaldomainslugs
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
X8400 interfaces include Wi-Fi, Ethernet, RS-232, USB and cellular; GPS-tagged and timestamped data can be supplied in ANSI N42.42 (2020) reachback format.
Supports: Capability · technology readiness level
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · defence applications
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · defence applications
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · defence applications
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · maturity
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
Each X8400 gamma/neutron module contains a 2 by 4 by 16 inch NaI crystal and lithium-6 fluoride/zinc-sulphide neutron detectors, without helium-3 gas; BTI specifies gamma energy resolution better than 8% at 662 keV.
Supports: Capability · core features
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · name
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · summary
Each X8400 gamma/neutron module contains a 2 by 4 by 16 inch NaI crystal and lithium-6 fluoride/zinc-sulphide neutron detectors, without helium-3 gas; BTI specifies gamma energy resolution better than 8% at 662 keV.
Supports: Capability · technicaldomainslugs
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · technical tags
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
The X8400 datasheet specifies a 24 × 18 × 18-inch (L × W × H) footprint without detector stands for the 4GN Mobile system, a 30 × 20 × 14-inch pod for the 2GN Maritime system, and a 60 × 20 × 14-inch pod for the 4GN Airborne system.
Supports: Capability · technical tags
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · summary
BTI lists 4GN Mobile at approximately 235 lb, 2GN Maritime with pod at approximately 125 lb and 4GN Airborne with pod at approximately 215 lb; internal aircraft mounting and custom fixed-site configurations are offered.
Supports: Capability · technical tags
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
Supports: Capability · core features
X8400 operates on included lithium-ion batteries, 10-30 VDC vehicle supply or 115 VAC.
Supports: Capability · summary
X8400 combines gamma/neutron detection, isotope identification and alarm categorization, left-right directionality, dynamic background compensation and GPS alarm mapping; a system supports up to fourteen modules.
BTI offers FlexSpec Mobile as an integrated Chevy Tahoe installation or a transferable vehicle kit. It combines gamma/neutron detection, left-right directionality, isotope identification, dynamic background compensation, GPS alarm mapping and remote operation/reachback. The vehicle integration is an option rather than evidence of a particular government fleet purchase.
Supports: Capability · commercial availability
BTI offers FlexSpec Mobile as an integrated Chevy Tahoe installation or a transferable vehicle kit. It combines gamma/neutron detection, left-right directionality, isotope identification, dynamic background compensation, GPS alarm mapping and remote operation/reachback. The vehicle integration is an option rather than evidence of a particular government fleet purchase.
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
F-1270 bid attachment lists four FlexSpec X8400 Maritime 4GN systems at USD 197,800 each, including four control modules and sixteen gamma-neutron modules; the stated delivery time is 140 days after receipt of order.
Supports: Capability · summary
F-1270 bid attachment lists four FlexSpec X8400 Maritime 4GN systems at USD 197,800 each, including four control modules and sixteen gamma-neutron modules; the stated delivery time is 140 days after receipt of order.
An April 22, 2026 Port of Los Angeles staff report recommended a USD 1,114,017.38 FlexSpec X8400 purchase from BTI, including taxes and five-year parts/service warranty, for marine and land-based Port Police radiation detection.
Capability · summary
Public sources cited · Facts and assessments kept separate · Human review
BTI offers FlexSpec Mobile fully integrated with a Chevy Tahoe or as a transferable sensor kit for different vehicle platforms. Its product page links the FlexSpec X8400 datasheet.
Supports: Capability · commercial availability
BTI offers FlexSpec Mobile fully integrated with a Chevy Tahoe or as a transferable sensor kit for different vehicle platforms. Its product page links the FlexSpec X8400 datasheet.
Supports: Capability · summary
FlexSpec combines high-sensitivity gamma and neutron detection, isotope identification, directional localization, dynamic background compensation and GPS-tagged mapping in deployable mobile, maritime, airborne, backpack and fixed-site configurations.
Supports: Capability · technical tags
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · defence applications
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technical tags
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technicaldomainslugs
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · defence applications
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technicaldomainslugs
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · defence applications
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · capability type
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technicaldomainslugs
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technical tags
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · summary
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technology readiness level
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · core features
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technical tags
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · technical tags
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports: Capability · name
The X8400 datasheet specifies up to fourteen detector modules, gamma spectroscopy and neutron counting without helium-3, -30 to +55°C operation, GPS/time-tagged data and ANSI N42.42 (2020) reachback. Interfaces include Wi-Fi, Ethernet, RS-232, USB and optional cellular; power can be battery, 10–30 VDC or 115 VAC. These are manufacturer specifications for this product family, not independent Arctic qualification.
Supports:
An April 22, 2026 Port of Los Angeles staff report recommended a USD 1,114,017.38 FlexSpec X8400 purchase from BTI, including taxes and five-year parts/service warranty, for marine and land-based Port Police radiation detection.
