Wireless Satellite Signal Uhf Transmitter
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1
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Product Unit
Pieces
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Origin
China Mainland
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- Description
Product Detail
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 | 50O | |
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, | |
External adjacent channel transmission power | External adjacent channel transmission power : in-band transmission power=-65dB, | |
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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