3kw UHF TV Transmitter

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...

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Product Details

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

-

-


STADIUMS are the clients who use this fm transmitter

The Toronto Blue Jays are currently using a transmitter to broadcast inside the Stadium, the content (play by play) of the baseball game. Spectators are encouraged to bring their own FM walkman and tune to the FM frequency inside the Stadium. The audio signal from an AM station (on location) is linked to the transmitter and the spectators are receiving the signal with their own FM walkman. The spectator, with such an application, is able to retrieve a multitude of information about statistics during the play by play, and even at the hot dog stand.


About us

Founded in February 1998, Anshan General Broadcast & TV Equipment Co., Ltd.(AGBE) is a comprehensive enterprise integrating R&D, production and sales of radio broadcast & TV transmitting equipment products. We have been enjoying a quite high reputation both at home and abroad due to our careful and thorough research, fine manufacturing process, market-oriented production and operation based on good faith.

AGBE employs about 70employees, 30% of whom are technical and managerial personnel. We have set up over ten functional departments, such as Market Department, Import and Export Business Department, R&D Department, Production Department and Assemblage Department. All the production equipment were purchased from domestic or international renowned professional manufacturers.

AGBE places great emphasis on product quality and has set scientific and strict quality standards on the links of purchase, development, manufacture, sales and services. Obtained several international and domestic certificates, we have constituted a scientific management mechanism suitable for our development. We have also established a talent encouragement mechanism and regularly carry out techniques, skills and quality improvement training on the staff in purpose of enhancing the comprehensive quality and sense of quality of each staff. With the thorough implementation of modern management mode in all respects, we have effectively enhanced the production efficiency, guaranteed the product quality and set up a sound enterprise image.

Our products consist of three series, digital tv transmitter, analog tv transmitter and fm transmitter. With novel concept, unique design and fine processing technique as well as successful combination of advanced technical function and cultural features, our products are advanced in technology, sole-aesthetic in processing technique and international-featured in pattern, and these advantages have won favor from a wide range of customers. Through the unremitting efforts and persistent pursuit of our staff over years and the industrious struggle of the Market Department and the Import and Export Business Department, we have established wide, healthy and developing business relations with over customers from forty countries and regions.

In the future, we shall follow the enterprise spirit of "To take quality as root, talents as basis and good credit standing as key to the company development" and keep constant innovation to strengthen the comprehensive competitiveness of the company. We are expecting to cooperate with friends from all circles in a much wider field to win mutual benefit.


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