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gptkbp:instance_of
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gptkb:campaign
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gptkbp:application
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railroad signaling
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gptkbp:availability
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widely available
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gptkbp:chime_configuration
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three chimes
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gptkbp:color
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gptkb:gold
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gptkbp:community_feedback
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active user forums
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gptkbp:compatibility
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compatible with various air systems
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gptkbp:demographics
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railroad engineers, conductors
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gptkbp:design
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three-chime
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gptkbp:design_feature
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weather resistant
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gptkbp:distributor
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various railroad supply companies
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gptkbp:environmental_impact
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minimal when used properly
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gptkbp:frequency
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low to mid-range frequencies
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gptkbp:historical_significance
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popular in modern railroading
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gptkbp:history
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K3 L, K5 LA
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https://www.w3.org/2000/01/rdf-schema#label
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Nathan Air Chime K3 LA
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gptkbp:installation
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requires air supply system
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gptkbp:introduced
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early 2000s
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gptkbp:invention
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protected by patents
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gptkbp:investment
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90-120 psi
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gptkbp:involved_technology
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air compressor systems
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gptkbp:is_often_used_in
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freight trains
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gptkbp:maintenance
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requires periodic inspection
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gptkbp:manufacturer
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Nathan Air Chime
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gptkbp:market
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gptkb:North_America
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gptkbp:material
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brass
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gptkbp:mounting_options
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bracket mount
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gptkbp:noise_level
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up to 130 d B
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gptkbp:operational_range
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up to 1 mile
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gptkbp:performance
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highly effective in signaling
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gptkbp:price_range
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$300-$500
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gptkbp:produces
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manufactured in the USA
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gptkbp:regulatory_body
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gptkb:Federal_Railroad_Administration
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gptkbp:regulatory_compliance
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yes
Federal Railroad Administration regulations
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gptkbp:related_products
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K5 LA, K2 LA
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gptkbp:safety_features
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designed to minimize false signals
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gptkbp:sound
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distinctive and recognizable
loud horn sound
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gptkbp:target_audience
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railroad companies
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gptkbp:training
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recommended for operators
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gptkbp:tuning
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A, C, E
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gptkbp:used_in
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locomotives
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gptkbp:user_feedback
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generally positive
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gptkbp:user_manual
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provided with purchase
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gptkbp:warranty
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limited warranty available
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gptkbp:weight
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approximately 10 lbs
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gptkbp:year_created
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moderate
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gptkbp:bfsParent
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gptkb:ES44_DC
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gptkbp:bfsLayer
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8
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