High Reliability 3kw FM Transmitter / Modular Structure

• Type: Transmitter
• Function: Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment
• Certification: CE, ISO, GS
• Frequency: 87.00MHz-108.00MHz
• Output Power: 3kw
• Output Interface: 7/8′(Female)
• Model NO.: ZHC618F-3000W/M2
• Size: 574mm(W)X1000mm(H)X880mm(D)
• OEM: Available
• Certificate: ISO9001:2008, BV, SGS
• Weight: 150kg
• Transport Package: Wooden
• Specification: ITU
• Trademark: ZHC
• Origin: China
• HS Code: 8525500000
• Production Capacity: 100sets/month

Product Description

3KW FM Stereo Transmitter

This 3KW FM broadcast transmitter uses a new digital FM broadcast exciter, high efficiency RF power amplifier and highly reliable N + 1 switching power supply and other components. It is modularized to form a compact 3KW cabinet with high performance and high reliability FM broadcast transmitter.
The transmitter adopts a modular structure to facilitate the maintenance of the transmitter; it can also be configured to automatically switch between the main and backup dual exciters to further improve the reliability of the whole transmitter.

FEATURES
1. Modular design concept, each functional module is assembled with building blocks, which is easy to maintain and repair.

2. The main and backup dual exciter configurations can be used to reduce the stop rate (spare exciter and automatic switcher are optional).

3. The 3KW power amplifier is installed in a 3U high 19-inch standard chassis. The interior is composed of four identical 1KW power amplifier modules for low loss, high isolation, and in-phase synthesis. The power redundancy design has large margin and high reliability.

4. The 1KW power amplifier module uses the latest high-efficiency LDMOS tube and adopts micro-band impedance conversion technology, which is simple, efficient, and consistent, and easy to replace.

5. The power amplifier radiator adopts the patented thermal simulation design tooth profile, which has small wind resistance, large heat dissipation area and high heat conduction efficiency.

6. Three high-quality long-life large-flow axial flow fans are connected in parallel, and the redundant air volume is large. A single damage will ensure the normal operation of the machine.

7. The power supply of the amplifier adopts 3x2.5KVA high-reliability switching power supply, and adopts flexible 2 + 1 hot-swap configuration scheme and parallel current sharing centralized power supply. Even if one of the power sources is repaired, the whole machine can still output 3KW.

8. The switching power supply is provided with protections such as over-voltage, over-current, under-voltage, over-temperature, short-circuit, phase loss, and lightning protection.

9. The transmitter is provided with VSWR, over power, over temperature, over voltage, over current and lightning protection.

10. The whole machine is installed in a 19-inch standard cabinet, and the height can be customized according to customer requirements.

11. The bottom of the cabinet is equipped with universal wheels (lockable) to facilitate the movement of the equipment.

12. Various technical parameters can be read through the touch LCD display of the central control unit (CCU) panel, which is intuitive and convenient.

13. Complete technical data detection and monitoring system and computer control software with complete functions.

14. Power control uses closed-loop automatic gain control to ensure stable output power without drift.

15. With TCP / IP and RS232 remote control interface, it is easy to realize local management and remote monitoring of the computer.

Technical Specifications: 
1. RF frequency range                    87MHz~108MHz 
(other frequencies can be customized), stepping 10kHz
2. Output power                          0~3000W continuously adjustable
3. Allowable deviation of output power   < ± 10%
4. Output power stability                 < ± 3%
5. Output impedance                     50Ω
6. RF Output Interface:                   7/8' or 1-5/8' Flange
7. RF efficiency                           ≥70%
8. Residual wave radiation                < -70dB
9. Parasitic amplitude modulation         < -50dB
10. Carrier Frequency precision:          ±200Hz
11. Analog audio input                    -12dBm ~ +8dBm
12. Input audio Level Gain                 -15dB~+15dB Step 0.1dB
13. Analog audio input impedance         600Ω balance
14. AES input impedance                  110Ω balance
15. AES input level                        0.2~10Vpp
16. AES sampling rate                     30kHz ~ 96kHz
17. RDS input                          Unbalanced (optional) BNC type connector
18. Pre-emphasis:                         0μS,50μS,75μS
19. Audio response:                       ±0.01dB (30Hz~15000Hz)
20. Left and right channel level difference <0.01dB (100% modulation)
21. Stereo separation                     ≥70dB (30Hz ~ 15000Hz)
22. Stereo signal-to-noise ratio           ≥90dB (1KHz, 100% modulation)
23. Distortion                             <0.01% (30Hz ~ 15000Hz)
24. Power supply Three-phase four-wire AC 380V 
or single-phase AC 220V or two-phase AC 110V
25. Cooling method                       Forced convection
26. Temperature range                    -5 ºC ~ + 45 ºC
27. Chassis dimensions                   19 inches 
wide (574mm) × height (1000mm) × depth (880mm)
28. Transmitter weight                    150kg
 
Company Informations

COMMON PROBLEM:

In order to be more comprehensive understanding of the knowledge about our products, we collect all the analysis of problem for every order, I hope for your help.

 

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.

 

Q6. Is the Frequency Adjustable?

A6. FM Radio Band Frequency is 87~108MHz, TV Band Frequency includes UHF/VHF band.

For FM Radio Transmitter; Power Below 2KW is all adjustable. Above 2KW would be narrow.

For TV Transmitter; all Frequency Band is very Narrow, only can contain around 3 Channels; so it's not adjustable.

 

Q7. Is your Analog TV Transmitter can be upgraded to Digital?

A7. Yes, we can. But the Frequency Band should be the same.

The only difference between Analog & Digital TV Transmitter is its TV Modulator.

After upgrade to Digital, the Power from TV Transmitter reduced 5 times.

For example: 1KW analog TV Transmitter can be upgraded to 200W Digital TV Transmitter.

 

Q8. How to do installation of these equipments?

A8. For small power station, the equipments are very easy for installation.

For large power station, we can send our engineer to your country to help you do the installation, but you should pay the cost.

We also can do training for your engineer here in our company.

 

Q9. How to operate these broadcasting equipments?

A9. We provide All-English user manual; All-English operation software in our equipment.

We also can do training for your engineer here in our company.

 

Q10. What about after sales?

A10. The warranty time is one year after goods leaving factory.

We can provide technical support from internet or in our company.

We can send spare parts to you directly when the equipment damaged.                               

 

ZHC(China)Digital Equipment Co.,LTD
ADD: No.23 Jugong Road,Hangzhou,310051,China

Name: Sylvanos ZhouFa