5KW FM Stereo Transmitter
The 5KW FM Stereo Transmitter (Hot-plugin) is a high-performance broadcast-grade stereo FM broadcast transmitter for wireless coverage of professional broadcast stations. Considering the high reliability of the transmitter, in the design concept, the transmitter adopts redundant design in key parts in order to achieve long-term stable operation of the transmitter. Because of the hot-plugin structure, the transmitter's components can be repaired and restored without stop working.
Features:
1. Redundant of output RF power: It is efficiently synthesized by four 1.5KW hot-plugin modules, and four 2500VA hot-plugin switching power supplies.
2. Stable output power: The intelligent automatic power control technology (AGC) is adopted to ensure that the output power does not change with the startup time and the ambient temperature. The power stability is controlled within 10W.
3. Dual-exciter configuration: adopting dual-exciter intelligent automatic switching (spare exciter and switcher are optional), which can further improve the reliability of the whole machine.
4. Digital FM Exciter: It adopts a fully digital CD-level FM exciter, which can directly receive digital audio signals (AES / EBU), and the listening effect is close to the CD level.
5. Friendly man-machine interface: 8-inch true-color touch LCD display, real-time display of various parameters in the machine, without any training, you can operate under the screen prompts.
6. Complete protection functions: with over-power protection, over-reflection power protection, over-temperature protection, over-voltage protection and over-current protection; and can intelligently adjust the output power when some power amplifier modules fail, while maintaining the maximum safe power broadcast, It can also guarantee that the fault will not be enlarged.
7. True hot-plugin function: under any circumstances, the power amplifier module and power module can be plugged in without stopping, and the transmitter can be repaired and restored without stopping.
8. Timing automatic adjustment of output power: Through on-site settings, the transmitter can automatically adjust the output power at different times of the day, bringing convenience to the economic operation of the radio.
9. Advanced remote-control telemetry interface: you can access any parameters inside the transmitter through RS232 / RS485 or interface TCP / IP network interface.
Technical Specifications:
1. RF frequency range 87MHz~108MHz
(other frequencies can be customized), stepping 10kHz
2. Output power 0~5000W continuously adjustable
3. Allowable deviation of output power < ± 10%
4. Output power stability < ± 3%
5. Output impedance 50Ω
6. RF Output Interface: 1-5/8' Flange
7. Residual wave radiation < -75dB
8. Parasitic amplitude modulation < -50dB
9. Carrier Frequency precision: ±200Hz
10. Analog audio input -12dBm ~ +8dBm
11. Input audio Level Gain -15dB~+15dB Step 0.1dB
12. Analog audio input impedance 600Ω balance
13. AES input impedance 110Ω balance
14. AES input level 0.2~10Vpp
15. AES sampling rate 30kHz ~ 96kHz
16. RDS input Unbalanced (optional) BNC type connector
17. Pre-emphasis: 0μS,50μS,75μS
18. Audio response: ±0.01dB (30Hz~15000Hz)
19. Left and right channel level difference <0.01dB (100% modulation)
20. Stereo separation ≥70dB (30Hz ~ 15000Hz)
21. Stereo signal-to-noise ratio ≥90dB (1KHz, 100% modulation)
22. Distortion < 0.01% (30Hz ~ 15000Hz)
23. Cooling method Forced convection
24. Temperature range -5 ºC ~ + 45 ºC
25. Chassis dimensions 19 inches
wide (777mm) × height (1523mm) × depth (950mm)
26. Transmitter weight 400kg
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
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