骆驼调频

This is a very beautiful home transmitters！

This item includes 15W LCD display FM transmitter, 100-240V AC Adapter, quarter-wavelength GP antenna, 8M antenna cables, 3.5mm headphone audio line, RCA Jack Adapter, United States GB Power Line

This stereo FM transmitter can easily build a wonderful FM radio station. This one have a beautiful aluminum alloy cover(Color: Gray).

Specification:

　　 1, uses:This product is the factory, OEM, schools, individuals, car FM radio, the ideal district FM radio broadcasting equipment.

　　 2, performance characteristics:

• Complete machine produced using high-quality aluminum alloy, blue backlit LCD display frequency.

• Japan ROHM motherboard for the next-generation integrated NC FM stereo radio chip PLL BH1415F, built-in PLL frequency PLL, audio pre-emphasis, limiter and low pass filter circuit. Make sound more sweet.
• AT89C2051 and the control board by the AT24C02 composition; After the 2sc9018, 2SC3355,2sc2053,2sc1971, a 2SC1972 and a total of 5 power amplifier output after.
• Overall shielding good, compact structure, small size, appearance generous.

　　 3, main technical parameters:

• Power supply voltage: DC 10-13.8V (12V recommended)
• Current work: <4A
• Frequency range: 88 ~ 108Mhz (70 ~ 120Mhz can be customized)
• Frequency Step value: 100kHz
• Frequency stabilization way: PLL
• Frequency stability: ± 10 ppm (-10 ° C +60 ° C )
• Frequency Modulation: ≤ ± 75kHz (100%)
• Work methods: continuous work
• Clutter and Harmonic: less than-60dB
• SNR: ≥ 60dB
• Stereo separation:-50dB
• Audio frequency response: 100 to 15000Hz
• Audio distortion: <2%
• Modulation: 15%
• Input Level:-15dBV (adjustable)
• RF output impedance: 50 Ohm
• Antenna Connector: BNC type
• Audio Input Connector: 3.5mm headphone connector
• MIC Input Connector: 3.5mm headphone connector
• RF output power: 15W (near the center frequency of 5MHz)
• Reference range: 8Km - 15Km (A barrier-free environment )
• Unit dimensions: L 128mm x W 94mm x H 54mm

Tested strictly For FCC Compliant!!!

If you can match a good antenna to the FM transmitter, the effect will be better.The transmission range depends on many factors. The true distance is based on the sensitivity of the receiver, antenna of the receiver, and the building and other obstructions, which are between the transmitter and receiver. And the distance will much more in countryside.

ATTENTION: Never power on the transmitter when an antenna is not connected!!!

15W FM Transmitter

Quarter-wavelength GP Antennal(8m cables)

Quarter-wavelength GP Antennal(8m cables)

Specification:

This is a wonderful FM Transmitter Antennae,the length of antennae can be adjust according to the Frequency you set!Frequency range: 85MHz ~ 150 MHzQuarter-wavelength GP antenna introduceIn the Radio Amateurs, Quarter-wavelength antenna can be seen as a simple but effective antenna. So in radio circles It accounts for a considerable proportion，For instance, Most of the police antenna is a quarter-wavelength antenna and so on. So Quarter-wavelength antenna has it’s reason to exist Absolutely.. If you do not know the high-frequency electronic, You may ask what is a quarter wavelength. In a word,It is Antenna Length Unit,it is based on frequency, here is the formula :

Antenna length (Wavelength)=( 30000 /frequency)*1/4 * 0.96(Wavelength Shortening rate) cm---- attention:Antenna Length Unit is cm

For exampl.If you want to make a antenna for 100.00MHZ
Antenna length=(30000 / 100.00MHZ) * 0.25 * 0.96 = 72cm

so we get the length of the antenna is 72cm then we prepare five 72 cm of Drawbars antenna and a M type Joints(figure), then link one of the Drawbars antenna to the main Spindle of the M type Joints, at last link the other four to the corner of the M type Joints(figure)

United States GB Power Line

 8M antenna cables

3.5mm headphone audio line

RCA Jack Adapter

100-240V AC Adapter

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