Radio FM PLL Transmitters 1W/7W 76-108MHZ + small antenna Wireless transmission

Description

Note:
The parcel haven't including power supply
.
Please purchase local DC12V3A/DC12V4A power supply and power socket 2.1
You can buy it from my shop. The package will be shipped from China and the delivery time is about 12 days(
Using express shipping service is about 7 days delivery
)
Power supply:  https://www.ebay.com/itm/113918123314
Spot shipping immediately, if you need it urgently please use quick shipping, due to the epidemic, I can not guarantee the delivery time of shipping, good luck, friend
Introduction:
ST-7C FM stereo transmitter can be used for factories, schools, supermarkets, farms, Office space or create your own radio station.
ST-7C using advanced modulation system and built-in PLL frequency, audio pre-emphasis, limiter, and low-pass filter circuit.
Specification:
Power input interface DC2.1
Phase Lock Loop (PLL) System
Easily choose your frequency LCD and buttons
Freq range :76MHz~108MHz
RF output impedance: 50 Ohm (BNC Type antenna output)
RF output power:1W/7W (Power can be switched)
Reference range: 5 Km - 10Km (A barrier-free environment)
Ripple or harmonic waves: <= -60dB
SNR: More than 60dB
Tuning Step : 100khz
Stability of Frequency: ±5ppm Less than 10ppm ( better system)
Freq. Response: -55dB(100~5000Hz); -45dB(5000 ~ 15000Hz )
Audio Input Connector: 3.5mm headphone connector
Microphone jack; it can be connected wih the microphone
Stereo channels crosstalk: -50dB
Audio frequency response: 20 to 15000Hz
Audio distortion: Less than 2%
Modulation: 15%
Power supply voltage: DC 12V3A/DC12V4A
Unit dimensions: 128mm(L) * 93mm(W) * 55mm(H)
Note:
* Connect antenna first ,then connect the power supply, otherwise, transmitter will be burned out.
* Select an unused FM station in your area.
* Packing not included power supply and Antenna.
Packing included:
1XST-7C    FM Transmitter
1Xsmall antenna
NOTE:1pcs ST-7C FM transmitter and 1pcs small antenna and free shipping ,Do not including power supply.