VHF Wireless Transmitter

Specification of Analog TV transmitter 1000w Specifications RF Specifications Frequency Band : VHF TV standard: Per Request Color System: PAL, NTSC, SECAM Modulation index : 87. 5% Output power : rated output power Vision output power stability : t 0. 25dB Sound/Vision carrier frequency...

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Product Details

Specification of Analog TV transmitter 1000w

Specifications

RF Specifications

Frequency Band : VHF

TV standard: Per Request

Color System: PAL, NTSC, SECAM

Modulation index : 87. 5%

Output power : rated output power

Vision output power stability : t 0. 25dB

Sound/Vision carrier frequency difference : 6. 5 土 0, 001 MHz

Vision / Sound Power Ratio : 10 : 1

In-band inter-modulation : -52 dB

Non-required radiation in adjacent channel : -45dB

Non-required radiation out of adjacent channel : -60dB, 1 mw (VHF) or ≤20mw (UHF)

RF Output impedance : 50 Q

Frequency carrier stability (3 months) : ± 200Hz (VHF)/± 400Hz (UHF)


Video Specifications

Video input level:1.0Vp-p

Video input Impedance:75Ω

Video input reflected loss:≥34dB

Amplitude/Frequency response:see table 1

Group delay-frequency response:0-6MHz,±30ns

Differential gain (DG):±5%

Differential phase (DP):±4°

Field time bar tilt K50:≤2%

Line time bar tilt Kb:≤2%

2T Kp:≤2%

2T Pulse Amplitude Kpb:≤2%

Luminance non-linearity distortion:≤5%

C/L gain difference:≤10%

C/L delay difference:±30ns

Signal to random noise ratio S/N (RMS,un-weighted):≥51dB

Signal to periodic noise ratio S/N (RMS,peak-peak):≥51dB

Inner-carrier spurious phase modulation(ICPM):±4%

Blanking level stability:±2.5%


Audio Specifications

Input Level : Od Bm t 6d Bm, 600 Q balanced

Type of emission : FM

Mod. ulati6n capability : > ± 100KHz frequency deviation

Frequency carrier stability (3 months) : ± 200Hz (VHF)/± 400Hz (UHF)

Pre-emphasis : 50 μs

Maximum frequency deviation : ± 50KHz

Harmonic distortion (100% modulation) :≤ 1%( 30Hz-15KHz)

Amplitude-frequency response (50% modulation) :±1dB (30Hz-15KHz, Pre-emph-asis:50 μs)

FM 5/N ratio : ≥60dB (1000Hz, 100% modulation)

AM noise (no modulation) : ≤-50dB

Inner-Carrier noise (100% modulation) : ≤-45dB

Output load reflected loss

Operating : ≥32dB

Setup : ≥20dB

Service conditions

Ambient temperature range : 5-40 ° C

Relative humidity : < 95%, non-condensing

Atmosphere pressure : 86-106Kpa

AC Mains Supply:380V (+15% /-20%), 50Hz t 1Hz or per request

Cooling mode:air cooling


Table 1

f

(MHz)

-4.43

-1.25

-0.75

-0.5

0

+1.5

+3

+4.5

+6

+6.5

>6.5

Up

(dB)

-30

+0.5

+0.5

+0.5

+0.5

0

+0.5

+0.5

+0.5

-20

-20

Down

(dB)

-

-

-4

-1.5

-0.5

0

-1

-1

-4

-

-


Our Work:

At AGBE,our employees' vision, energy, ideas and talent have created a company based on the interests and needs of families and lifestyles. We are constantly developing new products, improving current technology and looking for innovative and new designs.

Our Main Advantages:

We have drafted our bright prospectus with the spirit of unity, efficient work and research. We will strive to serve the society and perfect human life with our outstanding technology, high quality products and reasonable prices.

Quality Principles:

1) Responsible for the society

2) Innovative in security system technology

3) Keep improving to meet different requirements


Company introduction

Anshan General Broadcast & TV Equipment Co., Ltd.(AGBE). is one of the leading professional manufacturers of digital TV & Broadcasting system in China since 1998, devoting itself to supply high quality and cost-effective products, as well as solutions to our respectable clients all over the world.

Our company has a strong and advanced R&D team, consisting of professional engineers and designers with a wealth of experience. We are cooperating with the University of Electronics Science and Technology of China to develop and manufacture a complete DVB System (including digital cable TVs, as well as digital MMDS transmitting systems) and we already manufacture several unique products in this area.

We are specialized in providing turn-key solution for Cable System, Satellite Uplink (DTH) System, and all kinds of wireless transmission system, especially two way MMDS system, DVB-T2 system, and KU Band MVDS system. Up to now, we have built more than 50 wireless, cable and satellite uplink system in about 30 countries, such as Djibouti State TV Station, Mongolia Local TV Station, Somalia Hargeyas TV Station, Sierra Leone Capital CCNTV, Nepal AVENUES Satellite Channel, Philippine OLD PATH Satellite Channel, etc.

"Growing up with customer"is the philosophy we are insisting. The relationship between TELECAST and her customer is not only trade. We invest and cooperate in system construction with many operators, both domestic and overseas, which brings not only profit to our customer, but also more wonderful and cheaper programs to local people. Meanwhile, the news media of local government has been effectively improved by this way.

We are expecting to cooperate with you!


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