activity
antenna
bodyguard
channel
communicate
communication
control
electronic
emergency
equipment
frequence
frequency
hand
handheld
holding
job
male
microphone
mobile
occupation
operator
people
phone
police
portable
protection
radio
receiver
remote
safety
security
service
speak
staff
system
talkie
talking
talky
technology
transceiver
transmitter
uhf
using
walkie
walkietalkie
walky
wave
wireless
worker
working