空深網 deep space network (DSN)
空閑信道 idle channel
空閑信道檢測 idle channel detection
空中交通管制 air traffic control (ATC)
控位衛星 station-keeping satellite
控制臺 console
控制系統 control system
控制系統的程序 program of control system
控制系統誤差 control system error
控制信道 control channel (CCH)
控制信號 control signal
口令 password
塊結束符 end of block (EOB)
塊校驗規程 block check procedure
快捕帶 fast pull-in range
快閃要求 flash request
寬帶發射 broadband emission
寬帶干擾 broadband disturbance
寬帶器件 broadband device
寬帶射頻功率放大器 wideband radio frequency power amplifier
寬帶數據峰值頻偏 wideband data peak frequency deviation
寬頻段電臺 wide band station
擴頻 spread spectrum
擴展頻譜通信 spread spectrum communication
擴展器 expandor
擴展耗損 spreading loss
擴展卷積碼 diffuse convolutional codes
L
來訪登記 visitor register
來訪位置登記器 visitor location register (VLR)
來訪移動用戶 visiting mobile subscriber
雷達信標 radar beacon
里達系統 RITA system
連接 connection
連接線識別提供 connected line identification presentation (COLP)
連接線識別限制 connection line identification restriction
連續單音控制靜噪制 connected tone-controlled squelch system
連續單音制 continuous individual tone system
連續騷擾 continuous disturbance
連續相位頻移鍵控 continuous phase frequency shift keying (CP-FSK)
連續噪聲 continuous noise
聯合戰術信息分布系統 JTIDS
聯網尋呼系統 wide area paging system
鏈路 link
鏈路協議 link protocol
鏈路壓擴 linked compression and expansion (lincomprex)
量化 quantizing
量化區間 quantizing interval
量化失真 quantizing distortion
量化失真效率 quantizing distortion efficiency
裂相碼 split phase code
鄰（信）道選擇性 adjacent-channel selectivity
鄰道功率 adjacent-channel power
鄰信號選擇性 adjacent-channel selectivity
臨時移動用戶識別碼 temporary mobile subscriber identity (TMSI)
淋雨試驗 rainfall test
零控天線 null-steering antenna
零中頻接收機 zero-intermediate frequency receiver
靈敏度 sensitivity
流程圖 flowchart
漏碼 drop-out
漏同步 missed synchronization
漏泄電纜系統 leaky cable system
漏指令 missing command
陸地電臺 land station
陸地移動電臺 land mobile station
陸地移動業務 land mobile service
露點試驗 dew point test
路徑分集 path diversity
濾波器 filter
輪詢 roll polling
輪詢間隔 polling interval
螺旋濾波器 screwfilter
螺旋天線 helical antenna
邏輯電路 logical circuit
邏輯分析儀 logic analyzer
邏輯門 logic gate
邏輯設計 logic design
邏輯信道 logic channels
M
碼 code
碼交換 code conversion
碼分 code division
碼分多址 CDMA, code division multiple access
碼分多址蜂窩系統 CDMA cellular system
碼分多址個人通訊網 CDMA PCN
碼激勵線性預測編碼 code-excited LPC (CELP)
碼書 code book
碼速率 bit rate
碼速調整（脈沖塞入） justification (pulse stuffing)
碼速調整比（塞入比） justification ratio (stuffing ratio)
碼元同步 element synchronism
碼字 code word
碼組 block
脈沖 pulse
脈沖編碼，脈碼 pulse code
脈沖編碼調制（脈碼調制） pulse code modulation (PCM)
脈沖編碼調制基群 primary PCM group
脈沖編碼制 pulse coding system