2013年6月16日 · TM 11-238 Radio Sets SCR-194 And SCR-195 And Auxiliary Equipment 1942-04-17 "Radio sets SCR-194 and SCR-195 are highly portable, low power / high frequency sets …

1939年，他们造出了第一台无线背负式步话机（walkie talkie），型号为SCR-194。 SCR-194推出之后，缺陷很多，不适合战场使用。 于是，军方开始邀请民营企业加入，共同进行项目的研究。

2020年9月16日 · Field artillery set. 27.7 to 52.2 Mc. T-24 mic. This page was last edited on 16 September 2020, at 17:31. Content is available under Creative Commons Attribution Non …

不久后（1939年），他们造出了第一台无线背负式步话机（walkie talkie），型号为SCR-194。东西虽然造出来了，但是缺陷很多，不适合战场使用。 于是，他们开始邀请民营企业加入研究 …

SCR-194 / BC-222 . is an American backpack, developed for the artillery. It dates from the 1930s. It is generally considered to be the first true US Army portable transceiver. It contains two …

The radio set SCR-I94 is operated with all tweh'e sections of A.N-29-B drawn out usiug coil C-17-i, marked A; with the ten largest or lower sections using coil C-175, marked D.

The BC-222 is a battery operated portable transceiver developed for the US Army Artillery. Operating frequency bands are 27.7 - 38.5 MHz (Coil A) and 36.9 - 52.2 MHz (Coil B), the …

This document provides instructions for operating Radio Sets SCR-194 and SCR-195. It describes the components of each radio set including the radio receivers and transmitters BC-222 and …

Radio set SCR 178 is a ground transportable radio set, intended for point-to-point ad ground-to-plane communication between artillery units and aircraft observation purposes. Replaced by …

2017年6月12日 · 二战前，美国军方已经认识到无线电通信的重要性，于1938年研制出第一款便携式无线通信工具——步话机（Walkie Talkie）SCR-194。 它全部由电子管制成，非常笨重， …