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2KW Mobile TV Transmitting Equipment for Bus TV/Subway TV/Car TV Mobile Receiving

Location:
Chengdu, China ( Mainland)
Status:
New
Sample Availibility:
yes
Payment Terms:
Cash, Bank Transfer, Letter of Credit, T/T, L/C
Categories:
Home > Electronics & Electrical > Radio & TV Equipment

Product Description

KFM-Ⅱ Mobile TV Transmitting Equipment for Bus TV/Subway TV/Car TV Mobile Receiving, the fourth generation of mobile multimedia broadcasting transmitting equipment.

Main Features:

1. Exciters with self intellectual property have excellent functions, support all modes stated in GY/T 220.8-2008, support MFN and SFN modes.

2. Adopts independent designed adaptive baseband pre-distortion power amplify nonlinearity correction technique, big correction value, fast convergence, improved efficiency and reliability.

3. Adopts advanced LDMOS as power amplify tube, better index, higher efficiency and smaller bulk.

4. Amplifier module with no adjustable component, strong consistency and high stability;

5. Reasonable power amplifying link design, enough extra power.

6. Big loop AGC, ensure stable power output under different conditions;

7. Advanced power splitting and synthesizing technique, smallest insertion loss, and excellent isolation.

8. Independent designed cross coupling 6-cavity filter, the output spectrum meets China standard.

9. Transmitter has multiple protection measures against losing lock, overheating, standing wave, inter lock and overloading, to ensure stable work status.

10. Local/remote monitoring and On/Off schedule for unattended operation;

11. Transmitter main control unit uses ARM chipset, large true color LCD touch screen, strong function, friendly HMI;

12. Optional air cooling or water-cooling, for different station requirements.

Main Technical Parameters:

Item

50W/100W/200W

300W/500W

1KW

2KW

3KW

Output power

50W/100W/200W

300W/500W

1KW

2KW

3KW

Work Frequency

any channel within VHF/UHF TV band

Minimum frequency stepping

1Hz

Modulation standard

CMMB

Frequency stability (three months)

Internal reference source: ≤5X10-8

External reference source: ≤1X10-10(GPS)

Frequency accuracy

MFN mode: ±50Hz

SFN mode: ±0.05Hz

Local oscillator phase noise

<-60dBc/Hz@10Hz; <-75dBc/Hz@100Hz;

<-85 dBc/Hz@1kHz; <-95dBc/Hz@10kHz;

<-110 dBc/Hz@100kHz; <-115dBc/Hz@1MHz

Output power stability (after filtering)

±0.3dB

Spectrum mask

compliant with out-of-band spectrum mask standard in GB20600-2006

Shoulder (fc±4.2MHz)

≤-37dBc (before filtering)

In-band unevenness (fc±3.591MHz)

±0.5dB

Modulation Error Rate

≥33dB

Useless transmit power in adjacent channel

Ratio of useless transmit power in adjacent channel with in-band transmit power≤-45dB

Transmit power in adjacent channel≤13mW

Useless transmit power out of adjacent channel

Ratio of useless transmit power out of adjacent channel with in-band transmit power≤-60dB

Transmit power out of adjacent channel≤13mW

Environment requirements

Environment temperature: -5°C~45°C

Relative humidity: ≤95%(No condensation)

Atmospheric pressure: 86~106KPa

Work Voltage: three-phase AC 380V±10%, 50±2Hz

Dimension

563MM (W) x 337.5MM (H) x 514.5MM (D)

563MM (W) x 960MM (H) x 750MM (D)

586MM (W) x 1650MM (H) x 970MM (D)

775MM (W) x 1650MM (H) x 1100MM (D)

586MM (W) x 1650MM (H) x 1050MM (D)

double cabinets

Power amplifier includes optional AB type and Doherty type, the total efficiency of Doherty type transmitter can reach 32%.



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Contact Information

Company:
 Chengdu Kaiteng Sifang Digital Radio & Tv Equipment Co., Ltd.
Phone Number:
  86-28-85175031
Fax Number:
 86-28-85175031
 
Chengdu Kaiteng Sifang Digital Radio & Tv Equipment Co., Ltd.
 Sichuan , China FREE
 

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