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Showing below up to 100 results in range #51 to #150.
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- Air flow guide
- Air termination
- Air termination (of a lightning protection system)
- Air turbine
- Airtight
- Alarm
- Alarm system
- Alert
- Alert limit (or threshold value)
- Algorithm
- All-Round Light
- Allard's Law
- Allard's Law/de
- Allied Services
- Allowable stress
- Alloy
- Along-track error
- Alphanumeric
- Alteration
- Alternating-current machine
- Alternating-current motor
- Alternating Light
- Alternating Sectors
- Alternator
- Aluminium
- Ambient noise
- Ambiguity
- Ampere-hour efficiency
- Amplidyne
- Amplitude
- Amplitude modulation (AM)
- Amplitude of an observed heavenly body
- Analogue-digital convertor
- Analogue data
- Analogue signal
- Anchor
- Anchor bar
- Anchor davit
- Anchor ring
- Anchor shackle
- Anchorage
- Anchorage Mark (or Buoy)
- Anchoring
- Anechoic room
- Angle modulation
- Angle of Divergence
- Angle of Divergence/de
- Angle of Polarization
- Angle of Uncertainty
- Angle of incidence
- Angle of internal friction
- Angle of reflection
- Angle of refraction
- Angle section
- Angular deviation loss
- Angular frequency
- Angular resolution
- Anode
- Anode efficiency of an R.F. stage
- Anodising
- Antenna
- Antenna array
- Antenna effect
- Antenna feed
- Antenna matching unit
- Antenna radiation resistance
- Anti-clutter gain control
- Anti-fouling paint
- Anti-fouling paint/es
- Anti-vibration mountings
- Antinode
- Aperiodic antenna
- Aperture
- Appearance of Light
- Approaches
- Approval
- Approved AtoN Training Course
- Approved VTS training course
- Arc
- Arc (Discharge)
- Arc Lamp
- Archaeology
- Armature
- Armour (of a cable)
- Arris
- Articulated beacon
- Artificial antenna
- Asbestos
- Ashlar
- Assembled Lens
- Assigned frequency
- Assigned frequency band
- Astragals
- Astragals (2)
- Asynchronous motor
- Atmospheric Refraction
- Atmospheric Transmission Factor
- AtoN Personnel
- AtoN provider
- Atterberg limits