Wireless Satellite Signal UHF Transmitter

Key Features 1.Enhanced signal transmission quality 2.Intelligent and modularized amplifier unit, takes high power gain and high linear LDMOS tube amplifier module design 3.Low power consumption and super linear design to improve the transmission power, and reduce the nonlinear distortion 4.LED...

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Product Details

Key Features

1.Enhanced signal transmission quality

2.Intelligent and modularized amplifier unit, takes high power gain and high linear LDMOS tube amplifier module design

3.Low power consumption and super linear design to improve the transmission power, and reduce the nonlinear distortion

4.LED on the front panel support alarm and signal monitor

5.Stabilized-power supply with wide range of voltage and high efficiency

6.Multi lightning protection measures, good protection for whole equipment.

7.24-hour working unmanned, user friendly design

8.Support fault self-diagnosis

9.Support MFN and SFN system

10.Easy to install, elegant appearance。

11.Monitoring Objects and Alarm Status



Monitoring Objects

Alarm Status

Power Supply

abnormal

Overheating

alert

Amplifier

abnormal

Antenna feed system

abnormal


Technical Specifications

Phase noise


Center frequency deviation (Hz)

Local oscillator (dBc/Hz)

@10

≤ - 70

@100

≤ - 85

@1k

≤ - 95

@10 k

≤ - 100

@100 k

≤ - 111

@1 M

≤ - 125


Electrical Parameters


Item

Technical specs

Basic Parameters

TV Standard

DTMB-T /DVB-T/DVB-C

Modulating mode

4/16/32/64 QAM

Frequency stability (3 months)

External Frequency Range: ≤10-10

Internal Frequency Range: ≤10-7

Frequency accuracy

MFN: ±100Hz / SFN: ±1Hz

Local oscillator phase noise

See table above

In-band stray

≤-60dBc

In-band ripple(fc±3.591MHz)

±0.5dB

Out-of-band rejection

≤-65dBc

Input

Frequency range

470MHz~806MHz (any 100MHz bandwidth)

level

-20±3dBm

Input reflection loss

≥15dB

connector

N-K

Output

Output power

200W

Frequency range

470MHz~806MHz (any 100MHz bandwidth)

Output impedance

50Ω

In-band ripple(fc±3.591MHz)

±0.5dB

Shoulder level

≥40dB@central frequency FC±4.2MHz (after correction, single channel)

MER

≥35dB (after correction, single channel)

output reflection loss

≥26dB

Output power variation

±0.25dB

Inner adjacent channel transmission power

Inner adjacent channel transmission power : in-band transmission power≤-60dB,
meet that Inner adjacent channel transmission power≤13mW

External adjacent channel transmission power

External adjacent channel transmission power : in-band transmission power≤-65dB,
meet that Inner adjacent channel transmission power≤13mW

Environment condition

Working temperature

-20~+50℃

Storage temperature

-30~+75℃

Relatively humidity

<95%(no condensation at 25℃)

atm press

86~106kPa

power supply

AC,220V±10%/50Hz


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. 


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