CLEVELAND — Images from the moon will be sent to Earth with higher power and increased efficiency due to communications hardware provided by NASA’s Glenn Research Center. The hardware, called the ...

Scientists in a lab in China have developed a remarkable vacuum tube that could help make a game-changer electronic warfare device, according to a report. They developed a miniaturized traveling-wave ...

Sheet beam traveling‐wave tubes (TWTs) represent a sophisticated class of vacuum electronic devices that employ a broad, thin electron beam to interact coherently with radio frequency waves along a ...

A traveling wave tube assembly used for Telstar. Unit contains a type 4041 tube. This packaged unit consists of a tube with its magnetic circuit and radio frequency couplers joined together to form a ...