Answer: masers

AnswerCrossword Clue
MASERS

Generators of microwaves

MASERS

Electromagnetic wave enhancers

MASERS

Electromagnetic wave amplifiers

MASERS
Microwave radiation devices.
MASERS
Microwave amplifiers.
MASERSElectronic devices
MASERSDevices for amplifying electromagnetic waves
MASERSAtomic clock components