Beagle Active Probe
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| Clan = Active Probe
IS = Beagle Active Probe
|Year Availability|| Clan = 2832
IS = 3045
|Year Introduced||Clan = 2832 CGS|
|Year Extinction||IS = 2835|
|Year Reintroduced||IS = 3045 CC|
|Long Range|| Clan = 5
IS = 4
|Tons|| Clan = 1
IS = 1,5
|Critical Slots|| Clan = 1
IS = 2
|BV (1.0)|| Clan = 12
IS = 10
|BV (2.0)|| Clan = 12
IS = 10
The Beagle Active Probe (BAP) is a suite of enhancement technology that, when attached to general electronic sensors, enables the equipped unit to detect and classify other battlefield units whether they are camouflaged or even shut down, with the exception of conventional infantry. The probe was first introduced by the Terran Hegemony in 2576 as a means of combating active camouflage and other electronic jamming systems which had become prolific by the end of the Age of War. The system consisted of not only a separate computer core but an entire second set of sensors, including radar, infrared, visible light and seismic detectors, positioned at strategic points around the operating unit. As the unit's native sensor array scanned the surrounding area, this data was retrieved by the Beagle's computer core and cross-referenced with data from its own secondary sensors. If an anomaly was detected the Beagle performed a more detailed sensor sweep of the target area. With this process happening every millisecond, the Beagle was able to verify and even identify threats regardless of local terrain or electronic warfare interference.
One of the drawbacks to the system was the sheer necessary mass of the computer core and secondary sensors, which made it incredibly difficult to retrofit onto an existing unit. Effectively the Beagle was limited to dedicated recon units built from the beginning with the system in mind. Originally limited to Clear Sight Inc., an SLDF think-tank on Luna, production of the Beagle would eventually spread to other manufacturers. The BAP subsequently became extinct in the Inner Sphere in 2835 as a result of the Succession Wars before eventually being recovered in 3045 by the Capellan Confederation. The Clans never "lost" the technology, but dispensed with the "Beagle" surname when they polished the concept.
In addition to the ability to detect and classify targets at longer range, the Beagle includes a memory unit that records the events of a battle and allows for later playback. This includes the ability for the user to "re-fight" the battle by making different tactical decisions, which are then analyzed and implemented by the system, allowing for the resulting consequences to be observed.
Beagle Active Probe is manufactured on the following planets:
|Cyclops-Beagle Sensory Probe||Skye||Cyclops Incorporated||???|||
|Diplan Inquisitor||Luthien||Defiance Motors||???|||
|Hellespont Interrogator||Sian||Hellespont 'Mech Works||Men Shen|||
|Imstar Oracle||Marik||Imstar Aerospace||???|||
|Wunderland Anomaly||New Avalon||Achernar BattleMechs||???|||
The Inner Sphere Beagle Active Probe weighs 1.5 tons and takes up 2 critical spaces. It has a detection range of four hexes. The Clan version is lighter and smaller, weighing 1 ton and taking up only 1 critical space. Its detection range is five hexes. 
The Beagle Active Probe has been used in various video games, each with their own stats for the item; below is a list of the games that use it along with a link to each version's stats:
- BattleForce 2, p. 34, "Active Probe"
- Era Report: 2750, p. 101, "Beagle Active Probe"
- TechManual, p. 204, "Active Probe"
- Technical Readout: 2750, p. 10, ""Beagle Active Probe
- Technical Readout: 3060, p. 102, "Men Shen"
- Technical Readout: 3050, p. 220, "Beagle Active Probe"
- Tech Manual, p. 343, "Clan Heavy Weapons And Equipment Tables"
- BattleTech Compendium: Rules of Warfare, p. 114
- BattleTech Master Rules, p. 122
- Classic BattleTech Companion, 166, 194
- Classic BattleTech Miniatures Rules (PDF), pp. 18, 19
- Classic BattleTech RPG, p. 107
- Combat Equipment, pp. 22, 28, 30, 38, 40, 42, 44, 46, 48, 50, 54, 108, 127
- Combat Operations, p. 81
- Maximum Tech, pp. 79, 126, 127
- Maximum Tech (Revised), pp. 51-52, 54-55, 67, 72, 78, 83, 116, 188
- MechWarrior, Third Edition, p. 107
- Tactical Operations, pp. 99, 102, 219, "Advanced Game Rules
- TechManual, pp. 343-343, "Weapons and Equipment Table"
- Total Warfare, pp. 129, 134, 228, 238, "Game Rules"
- BattleForce 2
- BattleTech Compendium: Rules of Warfare
- BattleTech Master Rules
- Classic BattleTech Companion
- Classic BattleTech Miniatures Rules (PDF)
- Classic BattleTech RPG,
- Combat Equipment
- Combat Operations
- Era Report: 2750
- Maximum Tech
- MechWarrior, Third Edition
- Tactical Operations
- Technical Readout: 2750
- Technical Readout: 3050
- Technical Readout: 3060
- Total Warfare