2012年10月30日星期二

3KW FM transmitter



 
●Innovative digital fm stereo rds fm transmitter for professional radio station
●Input audio: Analog and digital (AES/EBU), changeover automatically
●Big size color LCD with touch panel
●All operating parameters are displayed in real time
RS232/485 communication with PC
●High performance and low price

FEATURES 
l  Hearing similar to CD   
l  3pcs 1KW RF power modules. Total output power is extremely stable thanks to AGC 
(Automatic Gain Control). 
l  3-way High efficiency power combiner with patent technology. 
l  Digital 100W exciters (DSP+DDS). 
l  Analog and digital (AES/EBU) audio signal input directly. 
l  8-inch Color LCD with touch panel displays all the parameters in real time. 
l  Intelligent protection functions by centre control module, like over PF, over SWR, 
over Temp, Over V, Over I. 
l  RS232/RS485 Communication interface ready for remote system.

SPECIFICATIONS 
1.Frequency Range:                       87.0MHz~108.0MHz 
2.Frequency Setting step:               10KHz 
3.Carrier Frequency precision:        ±200Hz 
4.Residual Wave Radiation:            ≥67dBc 
5. Audio Input Impedance:               600Ω, Balance (for analog) 
110Ω, Balance (for digital AES/EBU) 
6.Stereo Separation:                          50dB(30Hz~15KHz) 
7.Audio Input Level:                         ±10dBm,step 0.01dB 
8.S/N:                                            ≥75dB(30H~15kHz,100%) 
9.Audio Harmonic Distortion:            <0.1% 
10.Audio response:                          ±0.1dB(30Hz~15KHz) 
11.Output Load Impedance:             50Ω 
12.Output Power:                             0~3000W 
13.Pre-emphasis:                           0μS,50μS,75μS 
14.Deviation:                                   ±75kHz 
15.Pilot Frequency:                          19 kHz±1Hz Pilot Signal Modulation: 8%~10% 
16.Sub-carrier Suppression:            ≥65dB 
17.RF Output Interface:                    7/8'Flange 
18.Size:                             1300mmx700mmx550mm 
19.Weight:                           280KG 

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