2022年6月7日 · BC-611, also known as SCR-536, 1 handy talkie or walkie talkie, was a valve-based hand-held two-way radio transceiver, developed in 1940 by Don Mitchell at Galvin Manufacturing (now: Motorola) for the US Army.

BC-611 on display at National Cryptologic Museum. The SCR-536 was a hand-held radio transceiver used by the US Army Signal Corps in World War II. It is popularly referred to as a walkie talkie, although it was originally designated a "handie talkie". [1]

2025年3月3日 · Radio Set SCR-536 is a very compact receiver - transmitter resembling an oversize telephone hand set. Complete with batteries, antenna, transmitter, receiver - and handset in one case. The BC-611 is a handheld radio commonly known as the first "Handi Talkie" To remove the circuits from the case for service" Pull the radio out from the bottom.

SCR-536 Radio Set BC-611 Mil TRX MILITARY U.S. different makers for same model, build 1941–1956, 28 pictures, 13 schematics, 5 tubes, United States of

1940年美国摩托罗拉公司研制的SCR-300/BC-1000背负式跳频步话机，堪称一带杰作，用于连级通讯，最大陆地通话距离——4.8公里。 建国后，我军也装备了类似美军的电台，最著名的就是电影《英雄儿女》中王成使用的71型电台，由南京无线电厂于1950年参考苏联制造的PЪИ电台研制。 该电台采用匈牙利制造的小型电子管和中周变压器。 此外，由于当时国内工业基础薄弱，工厂自行设计制造调谐三联电容器、变压器、继电器、结构件、接插件、天线、机箱等。 1952年4 …

SCR-536/BC-611-F Freq range: 3.5-6 Mhz AM, 40 KHz channel spacing 1 channel crystal controlled Transmit power 36 mw receive sensitivity 3 to 5 microvolts internal AN-190 antenna internal handset with jacks for external hi Z mic/spkr [note: the jacks are connected to the grid and plates of the audio tubes.

The BC-611 was a hand-held radio transceiver used by the US Army Signal Corps in World War II. Under the Army Nomenclature System, the BC-611 transceiver was the core component of the SCR-536 Signal Corps Radio set.

Early in World War Two the U. S. Military recognized a real need for a communication device for ground troops that was portable and easy to use with moderate range. The BC-611 two-way radio design was selected to fill this need and the requirements met those requested.

The BC-611 was invented by Donald H. Mitchell. He worked for Galvin for some years prior to W.W. II. Their main products were radios for cars. The Victrola was a very popular item and so they named one of radios a Motorola meaning Motoring-ola, i.e. a …

Short range portable transceiver. A large green-painted metal box with round black earpiece and mouthpiece that are both perforated with small round holes in the shape of hexagons. On the back is a short khaki webbing carrying strap. Between the earpiece and mouthpiece is a plaque that reads "SIGNAL CORPS RADIO RECEIVER AND TRANSMITTER BC-611-C".