Fm Transmitter For Radio Station

Product Detail

Specification of FM transmitter


Frequency range:	87.5-108MHz
Output power:	500W
Load resistance:	50O
Radio frequency output interface:	7/16”/ EIA 40/EIA 80 (or customized)
Residual wave radiation:	< -70dB
Modulating frequency deviation:	100% modulated , 75 KHz
Preemphasis:	50µs/75µs
FM signal-to-noise (S/N)ratio:	< -75dB(when 1Khz 75KHz frequency deviation)
Frequency response:	20KHz-15KHz<±0.1dB
Harmonic distortion:	30Hz-15KHz<0.1%
Parasitic amplitude modulated noise:	< -50dB(without modulation)
Negative carrier inhibiting degree:	< -45dB
Audio input level:	0dBm
Audio input resistance:	L/R (Bal & Unbal), SCA, AUX/RDS, Z10K/600O/-6..+6dBm
Level differential of left and right signals:	30KHz-15KHz<0.5dB
Splitting degree:	30Hz > 53dB(typical value56dB), 80Hz-5KHz>60dB (typical value 65dB)
Ambient temperature:	-20 - +45?
Outer size of FM 500W transmitter:	350mm(H)×560mm(W)×630mm(D)
Weight of FM 500W transmitter:	45kg
Double Exciter system:	Optional
Exciter auto change switch:	Optional
LED display screen
Remote control :	Optional




FAQ

1.Cover range 

Regarding the cover range, it related to the height of hanging location of antenna to cover area, for example, if antenna hanging height is 100m, the cover radius of 1kw fm transmitter is 30-40km. If the antenna hanging height is 50m, the cover radius of 1kw fm transmitter is 20km. That is, if the hanging height is lower, the signal gain attenuation is much more. Different power, different hanging height, the cover range is different. If you want to get larger coverage range, you can make up synchronous transmitting network to enlarge the coverage range. Usually, in the fm, vhf and uhf band, a transmitter can cover a city/town. Because the earth is round, it has curvature. 

The reference cover range is showed as follow:

Take the 100m hanging height as example,

Power            cover range 

1kw              30-40km

3kw              40-60km

5kw              50-70km

The power is more than 5kw, the tower height is suggested to be more than 140m.

2.We can produce

We can produce the transmitter according to the customer’s requirement. Regarding the input power, it is can be adjusted according to the customer’s local condition, as well as equipping monitoring system and timing switch system.

3.Terms of payment

L/C and T/T

4.Delivery period

It is according to the customer’s quantity requirement. For example, 1kw, it will take about 7 working days after the contract effective.

For 3-5kw, it will take about 15 days.

5.The products we can produce

FM 30w, 100w, 300w, 500w, 1kw, 3kw, 5kw, 10kw, 15kw

TV 100w, 300w, 500w, 1kw, 3kw, 5kw, 10kw

Digital TV 100w, 300w, 500w, 1kw

We also produce the rare power according to customer’s requirement, such as, 2kw, 4kw, 7kw

The minimum power we can produce is 15w and maximum power we can produce is 20kw.

6.Package and transportation

We adopt international standard fumigation wooden case. It is also according to customer’s requirement. 

As to the transportation, our products can be transported by sea, by air or by train.

7.Warranty and after-sales service

It is one year after delivery. For the non-personal fault, we offer free maintenance and spare parts. After the warranty, we only charge the cost.

8.Installation and debugging

We can offer the service of installation and debugging. The buyer should provide the salary, room and board of our staff, as well as arranging the translator. Our staff only takes in charge the installation on the ground. We don’t take the aerial work and heavy manual work. The infrastructure construction and signal source should be offered by the buyer and settled before our staffs arrive at the site.

9.How about the shipping?

For small orders, we will send the goods by International Express like HK Fedex, DHL, TNT or UPS. usually it takes about 7work days to arrive.If big quantity we will ship by Ocean transportation, it takes one month to arrive. if urgnet, you can select shipping by Air, but freight charge will be more expensive.

10.what's your products' advantages ?

A. good quality and competetive prices.

B. Strictly quality control when producing.

C. Professional team work, from design, development, producing,assemble,packing and shipping.

D. Good after-sale service. Professional online technical support can be provided. Moreover, if there is any problem of the goods, we will help to solve the problem or provide replacement of the goods.