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TECSUN

CR-200 Handheld Portable Satellite World Radio

( 8 Reviews)
 
US $52.99
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Want to take a portable digital AM FM radio when you are travelling? That's it. This is a Handheld Satellite Radio. Free to store up to 100 radio frequencies, and long-term memory without power is not lost. Local radio circuit by AC power supply, and ad hoc a USB jack 5 V DC output, for MP3, mobile phones and other electrical charge to use.The AM FM tuner lets you choose from the wide range of free music, talk shows, sports, and other programming. Perfect for the garage, porch, or anywhere around the house, this Portable Satellite Radio delivers crisp sound and simplified controls.

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  • Specifications:

    • Receive TV audio VHF (1-12 channel) / cable TV Audio Z (1-7 channels) / FM (stereo) / AM radio with thermometer, digital clock display
    • FM band can be set to cover 87-108MHz or 70-108MHz
    • Automatically search and store radio programs (ATS) functions
    • Tuning modes, manual search, manual / automatic search frequency address
    • Free to store up to 100 radio frequencies, and long-term memory without power is not lost
    • You can re-set the personal habits automatic shutdown time (1-480 minutes)
    • Can be set to 12 or 24 hour clock display format
    • Local radio circuit by AC power supply, and ad hoc a USB jack 5 V DC output, for MP3, mobile phones and other electrical charge to use
    • With line input jack, do MP3 Active Speaker
    • Electronic clock by the two R6 AA battery powered independent
    • The built-in speaker of this Handheld Satellite Radio enables convenient listening anywhere, and the earphone jack permits private listening enjoyment and improved sound clarity in noisy environments
    • This Portable Satellite Radio is made of high quality material, durable and it can last for a long time
    • Size: 194 x 144 x 53mm/7.6 x 5.7 x 1in(L x W x H)

    Details:

    Tecsun CR-200 Handheld Portable Satellite World Radio

    • Tuning modes, manual search, manual / automatic search frequency address

    Tecsun CR-200 Handheld Portable Satellite World Radio

    Tecsun CR-200 Handheld Portable Satellite World Radio

    • Automatically search and store radio programs (ATS) functions

    Tecsun CR-200 Handheld Portable Satellite World Radio

    Tecsun CR-200 Handheld Portable Satellite World Radio

    • With this screen, it is easy to control
    • Large-caliber speakers, the sound loud and clear, beautiful sound

    How Does FM Radio Work?

    Sound Waves and Frequency:

    • All sound energy is in the form of a wave. The frequency of a wave is the measurement of the number of cycles that it undergoes in a given time frame. Hertz is a measurement of frequency that depicts the number of wave cycles per second. FM signals are measured in megahertz so an FM signal of 97.5 relates to 97,500,000 waves/second

    Frequency Modulation:

    • FM actually stands for Frequency Modulation. FM signals use various frequency levels that reproduce the sound of the originating source (i.e. music). You've probably noticed that FM contains all your music channels while AM radio is limited to news and talk programming. This is because frequency modulation allows for the transmission of the greater range of frequencies (high and low sounds) contained within music.

    Transmission:

    • FM radio originates at the broadcast source (radio stations). These stations use large antennas to send out their broadcast signal. Electrical charges are pushed up and down the broadcast antenna at a rate that relates to the carrier frequency. The movement of electrical charges creates an electromagnetic field which sends out
    • electromagnetic waves. The waves are sent in all directions. Carrier waves are sent out at a frequency that can be detected by your antenna (the radio station number). They carry sound information that includes the different frequencies of the original broadcast

    Reception:

    • The electromagnetic carrier wave travels through the atmosphere until it is picked up by a receiver antenna (i.e. your car radio antenna). At this time the wave causes electrical charges to be pushed up and down your antenna and on into your receiver. The receiver decodes the modulated frequency information and then passes it to the speakers

    Processing and Hearing:

    • The speaker vibrates according to the processed frequencies and pushes air molecules that recreate the original sound waves and pass them to your ears. You hear the music or talk that was sent in the original broadcast. Since electricity works at the speed of light, this process, from broadcast to listener, is instantaneous

    Loss of Signal:

    • You've probably noticed, particularly if you listen to FM radio in the car, that eventually you will lose your signal. The simple reason for this is that the short wavelength of FM radio waves cause them to travel in straight lines. The earth, however, is curved. Therefore, as the earth curves, FM waves continue in a straight line into the atmosphere and are no longer receptible. The short waves are also affected by obstacles like mountains

    How to Build an FM Radio?

    • A radio provides signal transmission via the use of electromagnetic waves. The frequencies a radio uses are lower than those of visible light. A German scientist by the name of Heinrich Hertz was the first to detect and product radio frequencies, in 1888. Radios are still in wide use, even in this internet age. Building a simple FM radio only requires a small amount of time and materials. Although this radio is fully functioning, it isn't very pretty

    Instructions:

    • Solder the ferrite loop to the variable capacitor. Only solder the ferrite wire that is painted black. Make sure you are soldering the ferrite loop to the center lead of the variable capacitor
    • Solder the unpainted wire of the ferrite loop to the variable capacitor's right lead
    • Solder the germanium diode to the same right lead of the variable capacitor as the unpainted wire of the ferrite loop. Only connect one end of the germanium diode
    • Solder one end of the piezoelectric wire to the other (free) end of the germanium diode
    • Solder the other end of the piezoelectric wire to the variable capacitor's center lead
    • Take note of the red-painted wire of the ferrite coil. Use an alligator clip to attach it to the antenna wire
    • Use the remaining alligator clip lead to attach the green-painted wire of the ferrite coil to a good ground. You can use a cold water pipe for the ground

    Package Included:

    • 1 x Satellite Radio

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• If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Please contact our Live Support to inform that.
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