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Bi-direction Trunk Amplifier
Bi-direction Trunk Amplifier
Supplier Info
[China Supplier]
Contact Person : Ms. Han Cindy
Tel : 86-29-88220111-266
Fax : 86-29-88223931
Product Detail
Adjust the forward trunk input signal to normal network operation level and correct the attenuation value

Introduction

RFE_130 twoway trunk amplifier forward stage adopts the push pull module enlargement, 

and internal splitter to select the output, with reverse channels which could transmit, 

and also with slope response and gain control. It is also used for CATV system trunk 

and distributing system, meeting extended frequency strip of system and upgrade requirement.

Feed (60V AC)

This set could feed by random up or down interface. Feed path should be shifted by current 

pluggable piece, and when current light is on, it means that the path is connected. It uses

voltage regulation plugin piece, and plug it into the consistent phase based on the real feed 

voltage to assure and power supply components are on the best work state.

Debugging 

Instrument: DMM, field strength meter (with supervision function available is the best)

Technical Parameter

Items

Unit

Technical parameter

Note

Forward

Reverse

Frequency range

MHz

47/87~860/750/550

5~65

Customers can order other frequency cutting mode

Rated gain

dB

30

0

Forward reference frequency point is 862MHz and reverse is 65MHz

Working gain

db

28

-1

Forward reference frequency point is 862MHz and reverse is 65MHz

Flatness in band

dB

±0.5

±0.5

Two-way ± 0.75

Rated output level(OUT1)

dBμV

Branch 100 distribution 96

Forward reference frequency point is 862MHz

Branch Output Level(OUT2)

dBμV

Branch 90 distribution 96

Forward reference frequency point is 862MHz

C/CTB

dB

68

Loaded 84 way PAL-D analogue channel

C/CSO

dB

66

≥52

Loaded 84 way PAL-D analogue channel

Noise figure

dB

≤8

≤10

Return loss

dB

≥16

≥16

Group time delay

ns

≤10

≤20

112.25/116.68MHz (forward) 57/59MHz (reverse)

Signal alternating voice ratio

%

<2

Concussion resistant voltage

KV

5

10/700us

Standard power voltage

V

A:60V  B:220V

AC

Bi-direction Trunk Amplifier

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