height gain
helical antenna
helical scan
HEMP
HERF
Hero
HERP
hertz (Hz)
Hertzian wave
heterochronous
heterodyne
heterodyne repeater
heterogeneous multiplexing
heuristic routing
Hexadecimal
| hf
HFDF
hierarchical computer network
hierarchical routing
hierarchically synchronized network
high-altitude electromagnetic pulse (HEMP)
high-definition television (HDTV)
high-frequency distribution frame (HFDF)
high frequency (HF)
high-level control
high-level data link control (HDLC)
high-level language (HLL)
high-order language
high-pass filter
high-performance equipment
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