The radios all worked perfectly on 911. The police could all talk to their dispatcher
and to each other, the firemen could all talk to their dispatcher and to each other,
and the crew of each ambulance could talk to their dispatcher and hospital. All of
their radios worked exactly as they were supposed to work.
But if the police wanted to talk to the firemen, then they had to call their dispatcher,
he had to patch them over through a phone line to the fire dispatcher, who then had to
make the connection to the radio on his end and call the firemen on their radio.
The police could not push a button on their walkie-talkies or in their cars and talk directly
to the fire truck a block away, and neither of them could talk directly to the ambulance
driver in the middle of the block who was trying to find his way through the smoke.
Each public service agency had its own radio system, and there was no direct radio
communication between them, without asking the dispatcher to connect them.
That arrangement always handled the job OK when there was, say, a traffic pile-up
involving 2 or 50 cars, or when there was a fire in a building where a couple of hundred
people live. But it did not provide the "inter-service" communication that everybody
needed when the two largest buildings in New York City were collapsing in the middle of
a work day with thousands of people still inside them.
911
Yes, shower radios really work without getting wet.
Early radios work by intinas .
Radios have to wireless sound because more radios exspeshualy in the present days are wireless they have no cord or plug for them to work you just push a button then then you have sound.
Yes. This is how radios work.
The FM radio was invented in 1933. It was invented by the inventor Edwin Howard Armstrong. He invented the frequency that allows radios to work.
Windup radios are just as the name says: they are radios in which you would crank a handle on the side going in a circular motion. this then charged the radio so that it would work. so you would windup the radio
A person can find information on how UHF radios by reading manuals that come with the radios or by contacting the companies that made them. Libraries will also have books that explain in more about the mechanics of UHF.
Most clock radios don't come with adapter for foreign countries but converted adapters can easily be purchased separately that should work will almost all clock radios.
Yes. Marine radios are installed in large ships and most boats. If your boat is small you aren't required to have one, but you can install one in your boat and it should work just fine. http://www.rightchannelradios.com/pages/vhf-marine-radios-faq-pv-c0-121.html
18+
Well when you call 911 and someone answers it is called a dispatcher. then you tell them your problem and they ask for were it is and they have radios to contact the fire department. Then when they get the call they go out to find you. That is why they know where you live!