BTI’s portable FlexSpec range separates related detector configurations. The X5300/X5500 datasheet specifies dual 2 × 4-inch gamma crystals: NaI(Tl) for X5300 and neutron-sensitive NaI(Li) for X5500, alongside lithium neutron detectors and high-range GM tubes. These backpack configurations weigh under 22 lb with neutron detectors and two batteries, and are rated for more than twelve hours using hot-swappable packs.
The DHS May 2025 market survey describes X5400/X5600 as directional detection, identification and localization systems; the X5600 likewise uses NaI(Li) for enhanced neutron response. Its product entries were supplied in 2024 by manufacturers and distributors, so the report provides a configuration comparison, not independent performance testing.
Technical detail
Core features
X5300 uses NaI(Tl) and X5500 NaI(Li) gamma crystals; both pair GM tubes with lithium neutron detectors and avoid helium-3
X5300/X5500: under 22 lb with two packs and backpack; over twelve hours stated battery operation; −20 to +50°C operating range
X5300/X5500: Android/iOS Wi-Fi connection, Android USB for wireless-denied operation, FlexLink arrays and GPS-tagged ANSI N42.42 (2020) output
DHS’s manufacturer-supplied X5400/X5600 entry lists IP66 and cellular links to SIGMA DTECT, DOE AVID and CBRNResponder
Portable radiation detection
Gamma-neutron detection
Radionuclide identification
FlexLink
Use & integration
Recorded applications
Personnel-carried radiological surveys and source localization
Radiation screening with remote analysis and linked detector arrays
These describe the reviewed application scope, not confirmed deployments, released requirements or procurement eligibility.
Evidence of maturity
Commercial product family documented by BTI and a DHS market survey. Model-specific manufacturer data must be confirmed for the purchased configuration.
Commercial availability
Available from BTI in multiple configurations; the survey’s USD 40,000–50,000 X5400/X5600 range reflects 2024 supplied data and is not a current quote.
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 2 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.
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technical tags
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technicaldomainslugs
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · defence applications
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technical tags
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · capability type
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technical tags
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technical tags
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · maturity
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · core features
DHS SAVER records X5400/X5600 compatibility with SIGMA DTECT, DOE AVID and CBRNResponder through cellular connectivity, IP66 environmental protection, and -4 to 122 degrees F operation.
Supports: Capability · technicaldomainslugs
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · technology readiness level
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · summary
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · core features
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · name
DHS SAVER lists X5400/X5600 portable directional radionuclide detection, identification and localization with dynamic background compensation, FlexLink networked modules and GPS mapping. X5400 uses NaI(Tl); X5600 uses NaI(Li) with enhanced neutron sensitivity.
Supports: Capability · commercial availability
The DHS May 2025 survey lists USD 40,000-50,000 for X5400/X5600 configurations based on 2024 manufacturer/distributor information.
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · summary
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
Public sources cited · Facts and assessments kept separate · Human review
BTI specifies X5300/X5500 below 22 lb including neutron detectors, backpack and two lithium-ion packs; packs are hot-swappable and rated for over twelve hours. Operating range is -20 to +50 degrees C.
Supports: Capability · technical tags
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · core features
BTI specifies X5300/X5500 below 22 lb including neutron detectors, backpack and two lithium-ion packs; packs are hot-swappable and rated for over twelve hours. Operating range is -20 to +50 degrees C.
Supports: Capability · defence applications
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · technical tags
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · capability type
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
Supports: Capability · name
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
Supports: Capability · technical tags
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · core features
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
Supports: Capability · defence applications
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · slug
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
Supports: Capability · core features
X5300/X5500 connects to Android or iOS devices by Wi-Fi, with Android USB in wireless-denied environments. FlexLink combines modules into an array, and GPS-tagged data supports ANSI N42.42 (2020) reachback.
Supports: Capability · maturity
BTI specifies two 2-inch-diameter by 4-inch NaI(Tl) crystals in X5300 and two 2 by 4 inch NaI(Li) crystals in X5500, the latter with enhanced neutron sensitivity; both include GM tubes and lithium-based neutron detectors, without helium-3.
