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Radio

A radio refers to an electronic device that works by receiving radio wave (an electromagnetic wave) that has the capacity to broadcast news, speech, music and other audio through the air.

8,296 Questions

What you do for reset eclipse CD5441 radio after power lost?

All Eclipse brand radios have a feature called ESN (Eclipse Security Network) installed. This means a Key CD may be inserted into the head unit so that if the unit is stolen or battey is disconnected from the unit you will have to enter the key CD to unlock the unit.

For example, lets say you purchased this unit from bestbuy. You installed it in your car and you wanted to activate the ESN security feature. You need to choose anyone of your CD's from your collection, lets say you chose The Offsping, Conspiracy of One. Input the disc hit the correct buttons ( I'll explain those later) and your Eclipse 54400's ESN is active.

Now, your 54400 is stolen a week later, the thief will plug in the 54400 into his car and it will show SEC [disc], so he/she will insert a CD and it will say [ERR]. If he or she does this 5 times it will show [call 800] which will lead them to Eclipse customer service, but you will have already called eclipse and told them that your unit was stolen. Whether you get your head unit back is highly doubtful but nobody else will be able to use it.

Now for your answer, to activate ESN:

1.Turn the vehicles ignition on and press the power button 2. Press and hold Radio station preset 1 and the FM-AM button for more than one second 3. Insert the CD of your choice. A [SEC] message will now aooear on the screen and ESN is active. Anytime the unit loses power you will have to reinsert the key CD.

To deactivate the ESN feature:

1. Turn the vehicles ignition on and press the power button or the FM-AM button (make sure the tuner is on). 2. Press and hold the radio station preset button 1 and the FM-AM for more than one second. 3.Once the display flashes [disc] insert the key CD you selected to activate the ESN. The display should now read [CnCl]. The ESN is now deactivated.

To resume normal operation after the power has been disconnected to the unit:

1. Wait for the dispaly to read [disc]. 2. Insert you key CD, if the correct CD is inserted your display will read [---] and the CD will begin to play. If the wrong CD is inserted it will display [Err]. If you insert the wrong CD 5 times it will say [call 800] and then you have to send the unit to eclipse to have it rest. Good Luck!

How to read the Electronic Serial Number:

1. Turn the vehicles power on. Prss the FM-AM button. 2. Press radio preset button 4 and the FM-AM button for more than a second and the display should show your 8 digit serial number. This number is to identify your unit if it is recovered after being stolen. Yep, that will happen!

Hope this helps somebody out there.

Where can you get a manual for Radio Shack multi meter 22-7223?

I do have a Micronta 22-210 instructional manual. If you are still interested let me know.

How do you set the clock on an older AC Del co radio that doesn't have a set button 1989?

you go to wallmart and buy a fuken radeo

To set the clock on a radio without a set button:

With the ignition on and the radio off pull the Scan and Seek buttons out to change the hours and minutes.

Does Glenn Beck give to charity?

He has not stated which charities however he owns mercury1 which is a charity organization. One would think he donates to his own charity. Mercury1 holds a specific ball every year to pay for the salarys and operating costs so that when he claims all money raised for this cause 100 percent goes to that cause.

How do you cancel and reset code for chubb safebox?

Ring a locksmith if its locked. If its open press the p button then input your new code, input your new code again and it will set. Try it with the door open before shutting and locking it.

What TYPE of energy is used in a radio?

A radio is built to catch some of the electromagnetic energy sailing past its

antenna, and use that small trace of energy to control electric circuits in the

radio, in order to create a much more powerful copy of the electromagnetic

waves that it caught. When that's been done inside the radio, it'll eventually

use the powerful copy to wiggle the paper cone of a speaker or the diaphragms

in a pair of earbuds, in order to convert some of the electrical energy into sound

energy that can be detected by human ears.

By changing just one step at the end of the process, the powerful copy can be

used to manipulate the motion of the spot on a fluorescent, LCD, or plasma

screen, in order to convert some of the electrical energy into light energy that

can be detected by human eyes.

First song ever played on a radio station?

It was on December 24, 1906 from Brant Rock when during a short program for Christmas, O Holy Night was played on a violin.

Who invented a walkie talkie?

Motorola invented the walkie-talkie in the 1930s for War communication.

Radio was working and then while driving went to nothing but static on AM and FM. What is the problem?

The antenna circuit is the most likely cause of the static. check to see that the antenna cable is plugged into the radio, and there are no loose wires.

Define the bandwidth of a frequency modulated signal?

I believe the bandwidth of ANY signal is defined as the range of frequencies

that encompasses 99% of the signal's power.

For an AM signal at anything less than 100% modulation, it's 2 x the highest

modulating frequency.

FM signals aren't that simple to characterize. "Cramer's Rule" says that the

bandwidth is 2 x (peak deviation + highest modulating frequency), but as

the 'modulation index' increases, that rule becomes a poorer approximation.

How a radio is used by Indian meteorological department to disseminate information?

Using APRS, many people connect advanced weather detection equipment to the radio to broadcast the weather details.

Where can you find clean versions of songs?

F.Y.E, but they're hard to come by, and probably Wal-Mart because all their CDs are edited.

How do you install an aftermarket Radio CD player in a 1988 Chevy caprice classic?

if your skilled enough in wireing have colour codes for spkrs can make or buy a facia plate i managed to v carefully cut the original partof the facia for the new CD to fit in original hole that old radio came out of on my 78 79 85 caprices made a plate for my 91 as hole was twice as big good luck Dave .cop

How do you fix the sound on radio of ford explorer 1992 has power just no sound?

Before you replae the deck, check all of the fuses. If those are good pull the deck out(youll have to get some keys to remove the radio, you can get them from walmart for a couple bucks) and make sure all of the connections are good and there is no exposed wire. If that's good, it could be your deck OR most likely one of your speakers is grounding out. Youll need to disconnect all of your speaker lines from the deck, then reconect one set of speaker lines. If that works, disconnect that then try another. Repeat until you find one that doesnt work, this line will be the one that's grounding out. Youll need to trace the wire until you find where the wire is damaged. If your speakers are grounding out, then putting in a new deck wont fix it.

AnswerIf you have power and the antenna & speakers are hooked up, then you probably just have a defective radio. If the radio is indeed defective, a salvage yard is a good place to find an OEM replacement. AnswerMy radio amplifier quit working and I found a fuse that was 20 am that was labeled for the radio amplifier, and the tow package lights that was blown.

Replacing the fuse did the trick.

What is a bluetooth radio?

a bluetooth radio is something that you gotta buy from the shops.

What factors affect the range of a radio transmission?

There is a complex answer to this, so lets put up the basics. First, very low frequency (vlf) radio frequency (rf) energy can "bend" and can travel around the world (literally) as well as penetrate water to some degree. It can be received almost anywhere on the globe. Is that enough range? U.S. Naval submarine communications uses this phenomenon. Electromagnetic radiation (emr) can also travel (propagate) via a "bounce" (can be reflected and/or refracted) off the ionized upper atmosphere (depending on frequency and angle of incidence), and, to a degree, bounce off land and water. It can thereby "bounce" its way around the world. There will be "dead spots" where the signal can't be "seen" by a receiver - unlike a circumnavigating vlf wave. Both those eventualities are power dependent, naturally. The bad news is that if one wants to get a signal from point A to point B, there are variables that will determine what "band" of transmission is best suited to the task.

What is the least listened to FM radio station?

In the US, the commercial FM (broadcast) band nominally begins at 88 MHz.

87.9 was allocated, but only for some low-power "Class D" stations because

it's virtually right on top of the aural carrier of the analog-TV Channel 6. The

lowest carrier frequency normally assigned to an FM broadcast station in the

US is 88.1 MHz.

When did the radio become popular?

Sometime in the 1880s, Prof. Heinrich Hertz succeeding in generating long-wave

electromagnetic radiation and then detecting it all the way over on the other side

of the laboratory, without wires. Having had a great day, he didn't want to let

anything spoil it, so he took the phone off the hook, flipped off the light, listened

to the 11:00 news, and went to sleep.

What are the level of danger radio waves pose to living organisms?

The answer, most of the time, is zero.

  • Radio waves are not 'ionising radiation' which could be dangerous at fairly low power levels.
  • Radio waves in general pass through living things, with only a very small percentage of the energy being absorbed. The few transmitters which are powerful enough to be dangerous are surrounded by security fences to keep people at a safe dictance.
  • There is a frequency in the low microwave region (just above 2GHz) which is strongly absorbed by molecules of water. This frequency can be produced in dangerous quantities by specially built magnetrons, and anything containing water can be boiled after a fairly brief exposure to the output from one of these. There are lots of these about, all safely shut up inside microwave ovens.

What problem in Triode vacuum tubes is solved by the screen grid in Tetrode vacuum tubes?

The screen grid shields the control grid from the plate, reducing capacitance and the Miller Effect, improving performance at high frequencies.

It *also* greatly increases the intrinsic ("natural") gain.

This is the amplification factor, "mu".

A triode has a maximum mu of around 100, and as little as 2.0, depending on the valve type.

A tetrode/pentode has a mu in excess of 500, often in the thousands.

However, you won't usually find a specification for mu in tetrode/pentode data sheets, as it's impractical to design circuits with this amount of gain.

Around 300~350 is the practical maximum.

How do you Replace a radio in a 1999 Avalon?

the trim surrounding the radio must first be removed. to do this, use a screwdriver to pop the 2 clips at the bottom of the trim (you can probably see the small slits of where the clips are. once these are popped you can pop out the whole trim assembly and it's remaining clips. now there are four screws that hold in the radio, just remove those and the whole radio assembly will slide out as well.