20W TV Transmitter UHF/VHF + broadcast antenna + 30M feeder cable complete kit

Total:1942 USD

Item:1619 USD   Shipping:323 USD

20W TV Transmitter UHF/VHF

General Description
 This transmitter makes use of RF modulation technology and imported power amplifier, featuring simple circuit design, good performance, stable operation and long time continuously running. It can make up a medium-power TV station when connected with the microwave equipment, satellite TV receiving equipment and video recording equipment.
The complete kit contains:
1. 20W TV Transmitter                one Set
2. Broadcast Antenna                 one Piece
3. 30 meters  feeder cable          one Piece
4. Video input cable                    one Piece
5. Audio input cable                    one Piece
6. Power supply cord                  one Piece
7. Operation instructions             one Copy
Operation Principle
 The 20W TV transmitter is composed of three parts, a modulation unit, a power amplifier (PA) unit and a switching power supply. In the modulation unit, video signals are adjusted to the suitable modulation depth via a level adjusting potentiometer and then clamped by a diode. The audio signals are sent to a FM oscillator for frequency modulating after its frequency deviation is adjusted by the level potentiometer. The FM oscillator employs a LC oscillator and generates6.5MHz FM signal by a variable capacitance diode. The frequency of the crystal oscillator is multiplied to generate the wanted visual carrier. 6.5MHz FM signal and video signal modulate the visual carrier simultaneously. A bandpass filter will filter out unwanted components and the signals will be sent to the PA unit by a broadband amplifier.
 PA unit is composed of first stage PA and final stage PA units. The first stage PA unit consists of a module and a transistor and adopts a class-A broadband amplifier. The gain of the module is 34dB and the total gain of the PA is about 54dB. Working current of the triode transistor can be calculated by measuring voltages on both ends of the resistor R6 (2W 1W).
 The power supply unit contains a switching power supply which features small size, lighter weight and high efficiency and can provide over-current and short-circuit protections, so that the transmitter will work at a stable 28V DC voltage. The overall equipment uses one 28V/10A power supplies. In the case of one of the power supplies is out of order, the transmitter will be switched off into safety mode automatically.
Dimensions             120mm*400mm*420
Temperature range                0- 40ºC
Relative humidity                 90% (at 25°C)
Voltage                                 220VAC        50-60Hz  (please let us know your voltage and frequency , we can custom make for you )
Power consumption                     70W
Operating channel                   any appointed channel within UHF or VHF
Modulation method                    Vision: negative polarity, AM
                         Sound: FM
TV standard                         NTSC  ( Pleast let us know the standard you need , we can custom make for you )
Vision/sound power ratio            10:1
Output power                       20W
Output impedance                50W
Unwanted radiation                    in adjacent channel £ -50dB
Intermodulation distortion          in- band £-50dB
Video characteristics
Video input voltage                     1Vp-p ± 3dB
Video input impedance        75W
Vision carrier stability          ± 500 Hz/Day
Amplitude vs. Frequency            0-5MHz £ ± 0.5dB
Random spurious S/N          ³50dB
Differential gain                          £ 7%
Differential phase                 £ 5°
Audio Characteristics
Audio input level                 ³100mV
Audio input impedance        unbalanced
Max. frequency deviation           ± 50KHz
Audio harmonic distortion          40Hz – 150Hz £ 2%
FM S/N                             ³60dB


Total:1942 USD

Item:1619 USD   Shipping:323 USD
 How far(long) the transmitter cover?

The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain,  using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.

EXAMPLE 5W FM Transmitter use in the city and hometown:

I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).

I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).

I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).

Below are the approximate range of different power FM Transmitters. ( The range is diameter )

0.1W ~ 5W FM Transmitter :100M ~1KM

5W ~15W FM Ttransmitter : 1KM ~ 3KM

15W ~ 80W FM Transmitter : 3KM ~10KM

80W ~500W FM Transmitter : 10KM ~30KM

500W ~1000W FM Transmitter :  30KM ~ 50KM

1KW ~ 2KW FM Transmitter : 50KM ~100KM

2KW ~5KW FM Transmitter : 100KM ~150KM

5KW ~10KW FM Transmitter : 150KM ~200KM

How to contact us for the transmitter?

Call me +8615915959450    OR
Email me
tell me   1.How far you want to cover in diameter ?
             2.How tall of  you tower ?
             3.Where are you from ?
And we will give you more professional advice.

About Us

We specialized in production and sales of FM / TV Transmitter , FM / TV antenna , the FM / TV transmitter accessories. We have been exporting FM /TV transmitter for 6 years. We have clients all over the world, not only the resellers but also the consumers. With 6 years experience in this field ,we have professional team and excellent aftersales service. We dedicated in supplying the best quality products with competive prices and excellent customer sevice! If you have any question about it , No matter you buy or not, please feel free to tell us your questions,we are very willing to help you and solve your problems. Contact email : sky@cantonmade.com

Our Factory 

We have modernization of the factory . You are welcome to visit our factory when you come to China.

At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office .  If you come to China , you are welcome to visit us .

At Fair

This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.

Where is Fmuser ?

You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .

FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway stationxiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .

Contact: Sky Blue
Tel: 86-2-87597795       Fax: 86-2-87588285
Cellphone: 86-15915959450 
E-mail: sky@cantonmade.com
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Skype: sky198710021
Address: No.1502 Room HuiLan Building No.273 Huanpu Road Guangzhou China    Zip:510620


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Contact US--->>Return the item to us--->>Receive and send another replace .

Name: Liu xiaoxia
Address: 1502Fang  HuiLanGe  HuangPuDaDaoXi 273Hao TianHeQu  Guangzhou China.
Phone: 08615915959450

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