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“KWD-1型盔式无线电话机”是上海市机械施工公司研制成功的。该机结构方面采用全厚膜集成电路,实现整机全电子化,盔机一体的合理造型。电路设计方面,除采用调频技术外,还采用了晶体稳频、滤波、鉴频装置,收发信号使用声控自动切换方式,送受话使用抗噪装置,以及具备音频呼叫,省电、自动间断守候,欠压报警等特殊功能。该机具有体积小,重量轻,功能全,抗干扰能力强 性能稳定、使用方便等
“KWD-1 Helmet-type Wireless Telephone” was successfully developed by Shanghai Mechanical Construction Company. The structure of the aircraft adopts full-thick-film integrated circuits to realize the complete electronic and machine-integration of the helmet. In terms of circuit design, in addition to the use of frequency modulation technology, a crystal frequency stabilization, filtering, and frequency-resolving device has been used. The transmission and receiving signals use voice-activated automatic switching methods, and the use of anti-noise devices for sending and receiving calls, as well as audio calls, power saving, and automatic interruption waiting. Undervoltage alarm and other special functions. The aircraft has a small size, light weight, full-featured, strong anti-interference ability, stable performance, easy to use, etc.