VHF Transmitter

Equipment rated specification ●Power range: ~AC380V±10;220V±20% ●Frequency: 50±2Hz; ●Designed ambient condition of equipment: Indoor use ●Above sea level height: up to 3500 m ●Atmospheric pressure: 86~106kPb ●Ambient temperature: 0°C to 45°C General Performance Working frequency: 470MHz —...

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Product Details

Equipment rated specification

●Power range: ~AC380V±10;220V±20%

●Frequency: 50±2Hz;

●Designed ambient condition of equipment: Indoor use

●Above sea level height: up to 3500 m

●Atmospheric pressure: 86~106kPb

●Ambient temperature: 0°C to 45°C


General Performance

Working frequency: 470MHz — 860MHz.

Nominal load resistor impedance 50 Ω coaxial, reflection loss ≥ 26 dB.

Rated output power :500W.

Overall Machine Technology Specification

Specification of vision part

Video input level:

1Vp-p ± 3dB positive

Sync level 0.3Vp-p

Peak white level 0.7Vp-p

Video input impedance: 75 Ω(Coaxial)

Reflection loss ≥ 30dB .

Frequency 0MHz ~ 6MHz

Periodic clutter signal to noise ratio: 50dB(peak to peak)

Continuous random clutter signal to noise ratio:

average root value(no weighted)≥ 50dB

average root value(weighted)≥ 56dB

Useless transmission power of nearby outside channel is lower than carrier 60dB

Useless transmission power of nearby inside channel is lower than carrier 40dB

2T sine square wave distortion Kp ≤ 2 %

2T sine square wave distortion to bar pulse amplitude ratio Kpb ≤ 2 %

Line frequency tilt Kb ≤ 2 %

Field frequency tilt K50 ≤ 2 %

Brightness nonlinear distortion ≤ 10 %

Differential gain distortion DG ≤ 5 %

Differential phase distortion DP ≤ 5 °

Chroma and brightness gain difference ≤ 10 %

Chroma and brightness delay difference ≤ 30ns

Variation of vision output power ≤± 0.25dB

Carrier stability in three months ≤ ± 50 0Hz/ three months

Blanking level stability ≤ 2.5%

Carrier audacious phase modulation: ± 5 °

Mode of modulation: amplitude modulation , negative pole

Amplitude degree ≤ 87.5 %

Difference of sound carrier and vision carrier: 6.5MHz ± 0.001MHz

Radio frequency sync level: 100%

RF blanking level: 75% ± 2.5%

RF white level: 12.5% ~ 15%


Company introduction

Anshan General Broadcast & TV Equipment Co., Ltd.(AGBE). is a high-tech enterprise integrating the R&D, manufacture and sale of Security Product. We are specialized in all kinds of digital tv transmitter, analog tv transmitter,fm transmitter. Our products have been widely applied in banks, power industry, transportation, public security industry, stores, factories, enterprises, institutions, communities and other fields.

We have strong technical supports and qualified professionals. Our professionals have advanced technical and interpersonal skills, guaranteeing the reliable quality, improvement and innovation of our products.

Guided by our principle of "Quality first and sincerity foremost", we work hard to ensure full customer satisfaction. We closely monitor the entire manufacturing processes. Every product is tested and checked by our in-house technicians for excellent quality. Our products are exported to many countries and regions, including America and Europe. To expand our international market share, we sincerely welcome you to contact us for more information.

We hope that our efforts can provide you with the most satisfying services.


FAQ

Q1. What these equipments used for?

A1. We are original manufacturer in FM Radio & TV Broadcasting equipments; they are professional used for FM Radio & TV Broadcasting Station (Transmitting equipment.)

Q2. What equipment & solution your company can provide?

A2. We can do complete solution for FM Radio Station System. It includes:

Studio--Link--Transmitter--Cables--Antenna.

We also can provide complete Transmitting part of TV Station. It includes:

Link—Transmitter—Cables—Antenna.

Q3. How large areas can One Station cover?

A3. One FM or TV Station can cover one city or one town.

The Maximum cover ranges of one station can not over 100KM Radius because the Earth is Curve.

You can use Multiple Stations & Different Frequency to cover larger area.

Q4. How do I choose suitable equipments for my station?

A4. The most import factors are Power and Frequency.

We need to know the Power and Frequency you need exactly.

How long the distances do you want to cover in Radius?

How height your Antenna can be installed?

Q5. How to calculate Broadcasting equipment Cover Range?

A5. The Cover Range depends on 4 factors:

1. Power from Transmitter; 2. Height of Antenna; 3. Gain from Antenna; 4. Around Environment.

Then we can know the cover range of your station.


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