FM Multiplexer

MODEL: GME9CF-*COMB-nKW

Specifications:FM multiplexer is a power synthesis device designed to achieve the synthesis of RF output signals from multiple frequency modulation transmitters into one signal output.

Standard: FM

Frequency:  87MHz~108MHz wideband

Input power:1KW~20KW

Product introduction:The FM multiplexer mainly synthesizes the RF output signals of multiple FM broadcast transmitters with different frequencies into one signal and outputs it. FM multiplexer can save the cost of configuring antennas for each transmitter and save antenna installation space.

Overview

GME9CF-6COMB-3KW type 3KW FM 6-channel combiner is a high-power FM combiner of new generation initially developed by Beijing Duoyang Gigamega Technology Co., Ltd. by applying passive radio frequency technology. It is a new product developed, standardized and serialized in its appearance and structure as well as artistic and practical. The combiner is equipped with stable and reliable performance, advanced technology, simple operation and convenient maintenance.

System Characteristics
Red copper, silvered brass and high-quality aluminum alloy have been adopted as materials of the cavity and tuning device;
Low insertion loss and reflection and high standing-wave ratio;
According to interval between frequencies, it is formed by combination of three-cavity or four-cavity filter and electrical bridge, and is of compact structure;
The overall structure is of modular design, providing upgrading space for later system expansion;
High isolation design, star-shape or bridge type or star + bridge structure is adopted as combination mode;
Anti-frequency temperature excursion design is adopted and all tuning devices are equipped with lock fasteners to prevent parameters from changing in transport and installation process;
Flat steel is adopted as support for overall outer frame for the convenience of transport and installation.

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F1   90.4

 

> 26dB

In-band peak (Maximum peak in F1±100KHz)

 

> 23dB

F1-100KHz

 

> 23dB

F1+100KHz

 

> 23dB

In-band insertion loss

F1   90.4

 

< 0.5dB

F1-100KHz

 

< 0.6dB

F1+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F2

F1   90.4

 

> 40dB

In-band peak (Maximum peak in F1±100KHz)

 

> 40dB

Isolation to F3

F1   90.4

 

> 40dB

In-band peak (Maximum peak in F1±100KHz)

 

> 40dB

Isolation to F4

F1   90.4

 

> 40dB

In-band peak (Maximum peak in F1±100KHz)

 

> 40dB

Isolation to F5

F1   90.4—96.7

 

> 40dB

In-band peak (Maximum peak in F1±100KHz)

 

> 40dB

Isolation to F6

F1   90.4-103.5

 

> 40dB

In-band peak (Maximum peak in F1±100KHz)

 

> 40dB

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F2

 

> 26dB

In-band peak (Maximum peak in F2±100KHz)

 

> 23dB

F2-100KHz

 

> 23dB

F2+100KHz

 

> 23dB

In-band insertion loss

F2

 

< 0.5dB

F2-100KHz

 

< 0.6dB

F2+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F1

F2

 

> 40dB

In-band peak (Maximum peak in F2±100KHz)

 

> 40dB

Isolation to F3

F2

 

> 40dB

In-band peak (Maximum peak in F2±100KHz)

 

> 40dB

Isolation to F4

F2

 

> 40dB

In-band peak (Maximum peak in F2±100KHz)

 

> 40dB

Isolation to F5

F2

 

> 40dB

In-band peak (Maximum peak in F2±100KHz)

 

> 40dB

Isolation to F6

F2

 

> 40dB

In-band peak (Maximum peak in F2±100KHz)

 

> 40dB

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F3

 

> 26dB

In-band peak (Maximum peak in F3±100KHz)

 

> 23dB

F3-100KHz

 

> 23dB

F3+100KHz

 

> 23dB

In-band insertion loss

F3

 

< 0.5dB

F3-100KHz

 

< 0.6dB

F3+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F1

F3

 

> 40dB

In-band peak (Maximum peak in F3±100KHz)

 

> 40dB

Isolation to F2

F3

 

> 40dB

In-band peak (Maximum peak in F3±100KHz)

 

> 40dB

Isolation to F4

F3

 

> 40dB

In-band peak (Maximum peak in F3±100KHz)

 

> 40dB

Isolation to F5

F3

 

> 40dB

In-band peak (Maximum peak in F3±100KHz)

 

> 40dB

Isolation to F6

F3

 

> 40dB

In-band peak (Maximum peak in F3±100KHz)

 

> 40dB

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F4

 

> 26dB

In-band peak (Maximum peak in F4±100KHz)

 

> 23dB

F4-100KHz

 

> 23dB

F4+100KHz

 

> 23dB

In-band insertion loss

F4

 

< 0.5dB

F4-100KHz

 

< 0.6dB

F4+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F1

F4

 

> 40dB

In-band peak (Maximum peak in F4±100KHz)

 

> 40dB

Isolation to F2

F4

 

> 40dB

In-band peak (Maximum peak in F4±100KHz)

 

> 40dB

Isolation to F3

F4

 

> 40dB

In-band peak (Maximum peak in F4±100KHz)

 

> 40dB

Isolation to F5

F4

 

> 40dB

In-band peak (Maximum peak in F4±100KHz)

 

> 40dB

Isolation to F6

F4

 

> 40dB

In-band peak (Maximum peak in F4±100KHz)

 

> 40dB

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F5

 

> 26dB

In-band peak (Maximum peak in F5±100KHz)

 

> 23dB

F5-100KHz

 

> 23dB

F5+100KHz

 

> 23dB

In-band insertion loss

F5

 

< 0.5dB

F5-100KHz

 

< 0.6dB

F5+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F1

F5

 

> 40dB

In-band peak (Maximum peak in F5±100KHz)

 

> 40dB

Isolation to F2

F5

 

> 40dB

In-band peak (Maximum peak in F5±100KHz)

 

> 40dB

Isolation to F3

F5

 

> 40dB

In-band peak (Maximum peak in F5±100KHz)

 

> 40dB

Isolation to F4

F5

 

> 40dB

In-band peak (Maximum peak in F5±100KHz)

 

> 40dB

Isolation to F6

F5

 

> 40dB

In-band peak (Maximum peak in F5±100KHz)

 

> 40dB

Test items

Test conditions

Measured indexes

Test indexes

Input VSWR

F6

 

> 26dB

In-band peak (Maximum peak in F6±100KHz)

 

> 23dB

F6-100KHz

 

> 23dB

F6+100KHz

 

> 23dB

In-band insertion loss

F6

 

< 0.5dB

F6-100KHz

 

< 0.6dB

F6+100KHz

 

< 0.6dB

Isolation between input ports

Isolation to F1

F6

 

> 40dB

In-band peak (Maximum peak in F6±100KHz)

 

> 40dB

Isolation to F2

F6

 

> 40dB

In-band peak (Maximum peak in F6±100KHz)

 

> 40dB

Isolation to F3

F6

 

> 40dB

In-band peak (Maximum peak in F6±100KHz)

 

> 40dB

Isolation to F4

F6

 

> 40dB

In-band peak (Maximum peak in F6±100KHz)

 

> 40dB

Isolation to F5

F6

 

> 40dB

In-band peak (Maximum peak in F6±100KHz)

 

> 40dB

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