RF POWER SWITCH

MODEL: GME

Specifications:1KW  FM Transmitter Professional used for FM radio  transmitter station

Standard: FM

Frequency:  87MHz~108MHz wideband

Outputpower:≥1kw

Product introduction:1kw FM transmitter is mainly consisting of seven parts, i.e., exciter, power amplifier (PA) unit, central control unit (CCU), power supply control unit (PSCU), switching mode power supply (SMPS), passive components (divider, combiner, filter, directional coupler, etc.) and cooling system. Its appearance and internal structure are shown on left.

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Overview

1kw FM transmitter is mainly consisting of seven parts, i.e., exciter, power amplifier (PA) unit, central control unit (CCU), power supply control unit (PSCU), switching mode power supply (SMPS), passive components (divider, combiner, filter, directional coupler, etc.) and cooling system. 

Features


1)Advanced technology and design concepts.
2)LDMOS all solid state technology, all solid state and broadband design of complete machine.

3)Adopt one-time power distribution and direct synthesis of radio frequency technologies of proprietary intellectual property rights.
4)Main components adopt modular design concept, which is easy for maintenance and upgrade.
5)Connect redundancy design together to reduce break rate.
6)Redundancy design in power amplifier unit: it shall be configured same 2KW power amplifier unit, and it can backup and conduct replacement for each other.
7)Redundancy design in backups of power supply: multiple switching power supplies are in paralleled current sharing. Moreover, single damage won’t affect broadcasting of complete machine.
8)Redundancy design in main and spare exciter: main exciter and spare exciter can backup for each other, and manual/automatic shift can be achieved.
9)Intelligent and networking monitoring system
10)Master control adopts ARM processor control technology which is equipped with strong self-diagnostic function.
11)Human-computer interaction interface adopts touch screen which is simple and useful.
12)Thorough data detection technology and remote monitoring system can realize real-time monitoring on local/remote working conditions.
13)Data exchange adopts CAN bus system which is rapid, reliable and convenient for applying computer management and monitoring.
14)Perfect protective measures can safeguard safe operation of equipment.
Adopt high-performance high-power power amplifier tube with anti standing-wave ratio 40:1.
15)Power amplifier is equipped with a series of protection including VSWR, temperature and over excitation.
16)Switching power supply is equipped with a series of protection including overvoltage, overcurrent, under voltage, temperature and so on.
17)Complete machine is equipped with VSWR, lightning protection, default phase and other protection.

18)Component connection directly adopts hot plug technology, which is convenient for maintenance and operation.
19)Power amplifier unit and switching power supply are designed to be direct hot plug, and cable connection is unnecessary.

Output power

1KW

RF output impedance

50W

Output interface

EIA 1-5/8” no Flan(optional)

Range of frequency

87.5-108MHz

Frequency stability

+/-1ppm (-10~50°C)

Residue Wave Radiation

Less than 1mW

Power voltage

380V/50Hz, three-phase four-line/single-phase 220V

Power Consumption

≤2KVA

Dimensions

900×575×650mm(height×width×depth)

Environment temperature

5-40℃

Aititude

≤2000 meters

Relative humidity

≤95%

Remote control interface

RS485

Audio input interface

XLR,balanced or imbalanced

Audio output impedance

600Ω(balanced)or10KΩ

Audio input level

-13dBm~+14dBm

Pre-weighted time constant

0、50、75us(optional)

Frequency response

±0.5dB (30Hz~15KHz)

Harmonic distortion

≤0.5%,(30Hz~15KHz)

FM SNR

≥70dB

Separation index of Right and Left Sound Channels

≥40dB, 100% modulate(30Hz~15KHz)

Level Difference between Right and Left Channels

≤0.4dB

Frequency Deviation of Pilot Signal

±1Hz

Audio input interface

BNC,imbalanced

Audio input impedance

10KΩ

Audio input level

-13dBm~ +14dBm

Frequency response

±0.2dB (30Hz~100KHz)

Harmonic distortion

≤0.1%,(30Hz~100KHz)

FM SNR

≥70dB

Separation index of Right and Left Sound Channels

≥50dB, 100% modulate

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KEEP IN TOUCH WITH US

 

E-mail:dygme@163.com

Add:  No. 21 Shuiyuan West Road, Liandong U Valley Science and Technology Park, Miyun District, Beijing, China