ZHC618F-2000W Compact Digital FM Radio Transmitter  

ZHC618F-2000C is a compact FM stereo broadcasting transmitters. The advanced digital technologies, Digital Signal Processor (DSP) and Digital Direct Synthesizer (DDS), are used in the transmitters to get little size, high performance and high reliability. They are widely used for professional radio stations to transmit high quality FM radio programs.

• Hearing similar to CD
• All-digital technologies DSP+DDS
• Built-in audio signal limiter
• Analog and digital (AES/EBU) audio signal input directly.
• AGC circuit can keep the Output Power stability.
• Big LCD display all the parameters in real time.
• Communication Interface by RS232 for remote
• Five kinds of protections for the security
• High performance and low price
• Compact structure
• Stainless steel cabinet

Technical Specifications : 

1. Frequency Range:            87.0MHz~108.0MHz
2. Frequency Setting step:      10KHz
3. Output power deviation        <± 10%
4. Output power stability         <± 3%
5. Output Load Impedance:     50Ω
6. RF Output Interface:          7/16"(female)/ 7/8" Flange
7. SFDR                           < -70dB
8. High Harmonic                 < -65dB
9. Residual Amplitude Modulation < -50dB
10. Carrier Frequency Precision   ±200Hz
11. Analog Audio Input           -12dBm~+8dBm
12. Audio Input Level Gain        -15dB~+15dB, step 0.1dB
13. Audio Input Impedance       600Ω, Balance, XLR
14. AES / EBU input impedance   110Ω, Balance, XLR
15. AES / EBU input level         0.2 ~ 10Vpp
16. AES / EBU sample rate        30kHz ~ 96kHz
17. SCA Input                     Unbalance (optional) BNC connector
18. Pre-emphasis                 0μS, 50μS, 75μS (optional)
19. Audio Response               ±0.1dB (30Hz~15000Hz)
20. LR channel level difference    <0.1dB (100% modulation) 
21. Stereo Separation             ≥50dB  30Hz ~ 15000Hz
22. Stereo S/N ratio               ≥70dB 1KHz, 100% modulation
23. Distortion                     <0.1%   30Hz~15000Hz
24. Cooling mode                 Forced Convection
25. Temperature Range:          -10ºC~+45ºC
26. Relative humidity             <95%
27. Working Altitude              <4500m
28. Power Consumption:          3300VA
29. Size                           4U, 19-inch standard
                                       650mm×483mm×177mm
30. Weight                        45KG
 

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Common Problems:

In order to be more comprehensive understanding of the knowledge about our products,we collect all the analyses of problems for every order,hope it will help you. 

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. 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.

Q8. 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.

Q9. 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.