- honor
- hoop winding
- horizontal deflection
- horizontal dipole
- horizontal drift
- horizontal stub
- horizontal vee
- horn antenna
- high emissivity
- high memory
- high sidelobes
- home exchange
- homogeneous system
- hooking routine
- hop length
- horizon sensor
- horizontal component
- horizontal radiation
- horizontal resolution
- hospitality expenses
- host
- host interface
- host structure
- host variable
- hot star
- hot zone
- hourly median
- hourly variations
- household appliances
- housekeeping data
- housekeeping instruction
- housing cost
- hybrid circuit
- hybrid coil
- hybrid parameter
- hydrazine system
- hydrogen maser
- hydrometeor density
- hyperbolic antenna
- hyperbolic path
- hyperlink
- hypersonic velocity
- hydrazine
- hydrogen line
- hydrogen thyratron
- hypergolic ignition
- hypersonic wake
- ideal filter
- identification card
- identification code
- identification map
- identification number
- idle channel
- idle tone
- idler frequency
- idler timer
- if amplifier
- IF breakthrough
- IF harmonic
- IF stage
- igniter
- igniter case
- igniter motor
- IIR filter
- illumination angle
- illumination efficiency
- illumination function
- housing subsidy
- hunting
- hybrid
- hybrid equipment
- hybrid microcircuit
- hybrid mode
- hybrid technical
- hybrid transformer
- hyperharmonic function
- ice cloud
- ideal antenna
- ideal bunching
- identification aid
- identification beacon
- identification channel
- identification character
- identification equipment
- identification field
- identification pips
- identification signal
- identifier
- identity badge
- ideographic information
- ideographic symbol
- idiom
- idle coil
- idle period
- idle state
- image
- image converter
- image digitization
- image digitizer
- image file