船舶移動業務 ship movement service
船上通信電臺 on-board communication station ,ship communication station
船用收音機 ship radio
串并變換機 serial to parallel (deserializer)
串并行變換 serial-parallel conversion
串話 crosstalk
垂直方向性圖 vertical directivity pattern
唇式傳聲器 lip microphone
磁屏蔽 magnetic shielding
次級分布線路 secondary distribution link
猝發差錯 burst error
猝發點火控制 burst firing control
存儲程序控制交換機 stored program controlled switching system
D
大規模集成電路 large scale integrated circuit (LSI)
大信號信躁比 signal-to-noise ratio of strong signal
帶成功結果的常規操作 normal operation with successful outcome
帶寬 bandwidth
帶內導頻單邊帶 pilot tone-in-band single sideband
帶內諧波 in-band harmonic
帶內信令 in-band signalling
帶內躁聲 in-band noise
帶通濾波器 band-pass filter
帶外發射 out-of-band emission
帶外功率 out-of-band power
帶外衰減 attenuation outside a channel
帶外信令 out-band signalling
帶狀線 stripline
單邊帶發射 single sideband (SSB) emission
單邊帶發射機 single side-band (SSB) transmitter
單邊帶調制 single side band modulation
單邊帶解調 single side band demodulation
單邊帶信號發生器 single side band signal generaltor
單端同步 single-ended synchronization
單工、雙半工 simplex, halfduplex
單工操作 simplex operation
單工無線電話機 simplex radio telephone
單呼 single call
單頻雙工 single frequency duplex
單頻信令 single frequency signalling
單相對稱控制 symmetrical control (single phase)
單相非對稱控制 asymmetrical control (single phase)
單向 one-way
單向的 unidirectional
單向控制 unidirectional control
單信道地面和機載無線電分系統 SINCGARS
單信道無繩電話機 single channel cordless telephone
單信號方法 single-signal method
單音 tone
單音脈沖 tone pulse
單音脈沖持續時間 tone pulse duration
單音脈沖的單音頻率 tone frequency of tone pulse
單音脈沖上升時間 tone pulse rise time
單音脈沖下降時間 tone pulse decay time
單音制 individual tone system
單元電纜段（中繼段） elementary cable section (repeater section)
單元再生段 elementary regenerator section (regenerator section)
單元增音段，單元中繼段 elementary repeater section
當被呼移動用戶不回答時的呼叫轉移 call forwarding on no reply (CFNRy)
當被呼移動用戶忙時的呼叫轉 calling forwarding on mobile subscriber busy (CFB)
當漫游到原籍PLMN國家以外時禁止所有入呼 barring of incoming calls when roaming outside the home PLMN country (BIC-Roam)
當前服務的基站 current serving BS
當無線信道擁擠時的呼叫轉移
calling forward on mobile subscriber not reachable (CENRc)
刀型天線 blade antenna
導頻 pilot frequency
導頻跌落pilot fall down
倒L型天線 inverted-L antenna
等步的 isochronous
等幅電報 continuous wave telegraph
等權網（互同步網） democratic network (mutually synchronized network)
等效比特率 equivalent bit rate
等效地球半徑 equivalent earth radius
等效二進制數 equivalent binary content
等效全向輻射功率 equivalent isotropically radiated power (e. i. r. p.)
等效衛星線路躁聲溫度 equivalent satellite link noise temperature
低軌道衛星系統 LEO satellite mobile communication system
低氣壓實驗 low atmospheric pressure test
低時延碼激勵線性預測編碼 low delay CELP (LD-CELP)
低通濾波器 low pass filter
低溫實驗 low temperature test
低躁聲放大器 low noise amplifier
地-空路徑傳播 earth-space path propagation
地-空通信設備 ground/air communication equipment
地波 ground wave
地面連線用戶 land line subscriber
地面無線電通信 terrestrial radio communication
地面站（電臺） terrestrial station
第N次諧波比 nth harmonic ratio
第二代無繩電話系統 cordless telephone system second generation (CT-2)
第三代移動通信系統 third generation mobile systems
點波束天線 spot beam antenna
點對地區通信 point-area communication
點對點通信 point-point communication
點至點的GSM PLMN連接 point to point GSM PLMN
電報 telegraphy
電報電碼 telegraph code
電波衰落 radio wave fading
電池功率 power of battery
電池能量 energy capacity of battery