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1. Introduction

The 38485 antenna is a wideband, dual-port, directional-panel antenna with slant 45 polarization
that covers US LTE700/Cellular/PCS/AWS/MDS and global GSM900/GSM1800/UMTS/LTE2600
bands. The antenna is designed for fixed installations and is ideal for both indoor and outdoor
applications. It includes a UV-stable enclosure that provides years of use without degradation to
either mechanical properties or aesthetics.

This antenna boosts both the received and sent signals to and from the attached cellular modem
in a single direction. Because of its directivity, it can reject adjacent unwanted side signals,
allowing for better signal reception while rejecting interference from adjacent signal sources. This
high-gain, directional antenna has a narrow beam width that requires precise aiming at the
cellular tower or Wi-Fi access point.

2. Specifications

The peak gain, standing wave ratio (SWR), and beam width specifications are frequency specific
and provided in

Table 2-1

(p. 2).

Operating temperature range: –40 to 70 °C (–40 to 158 °F)

Storage temperature range:

–40 to 85 °C (–40 to 185 °F)

Operating frequency range:

698 to 960 MHz; 1710 to 2700 MHz

Impedance:

50 ohm

Isolation

>25 dB

Front/back ratio:

21 dB

Maximum input power

50 W (per port at 25 °C)

38485 4G/3G 9 dBi MIMO Cellular Antenna

1

Содержание 38485

Страница 1: ...05 2021 Copyright 2021 Campbell Scientific Inc...

Страница 2: ...ifications 1 3 Precautions 2 4 Siting 3 5 Installation 3 6 Surge protector kit optional 5 6 1 Surge protector enclosure installation 6 6 2 Outdoor surge protector installation 7 6 3 Troubleshooting th...

Страница 3: ...tion Because of its directivity it can reject adjacent unwanted side signals allowing for better signal reception while rejecting interference from adjacent signal sources This high gain directional a...

Страница 4: ...l 3 dB beam width Vertical 3 dB beam width 700 MHz 8 7 dBi 9 1 dBi 2 0 1 65 to 74 66 to 70 850 MHz 9 0 dBi 9 7 dBi 1 9 1 59 to 65 61 to 65 900 MHz 9 8 dBi 10 4 dBi 1 7 1 57 to 60 56 to 60 1800 MHz 7 5...

Страница 5: ...a mount assembly that secures the antenna to a mast or pole using hose clamps and mast mount adapter The antenna can also be directly mounted on a wall see FIGURE 5 3 p 4 for drilling dimensions and...

Страница 6: ...se clamps to secure the antenna to the mast or pole FIGURE 5 2 38485 mounted on a tower Wall mounting FIGURE 5 3 Wall mounting bracket drilling dimensions and orientation 38485 4G 3G 9 dBi MIMO Cellul...

Страница 7: ...MA male connector fastens to the antenna l Ground lug and wire assembly position the lug between the connector and the enclosure wall or secure the lug using the nut and lock washer supplied l Surge p...

Страница 8: ...l to the same potential as the shield Once the center conductor and shield are equalized current cannot flow between the circuitry connected to the center conductor and the shield equipment chassis gr...

Страница 9: ...ure ground lug 6 Connect cables to the Polyphaser protector cell modem and antenna 6 2 Outdoor surge protector installation Required equipment l Roll of self vulcanizing tape cold shrink tape 25 mm x...

Страница 10: ...lacing connectors that have significant corrosion or cables that may have become water or oil soaked 2 Clean the body of the Polyphaser protector 3 Connect the Polyphaser protector to the antenna and...

Страница 11: ...ng to ensure a good seal between the tape and connectors and between the tape layers 7 Wrap both connectors a second time contiguous with the surge protector from end to end 8 Extend the ground wire f...

Страница 12: ...0 events at 500 A 10 100 microsecond or five events at 20 000 A 8 20 microsecond surge Expected life without a surge strike is 20 years However the actual Polyphaser lifespan varies because lightning...

Страница 13: ...ther manufacturer s products that are resold by Campbell Scientific are warranted only to the limits extended by the original manufacturer Refer to www campbellsci com terms warranty for more informat...

Страница 14: ...ion or Repair Reference number contact your CAMPBELL SCIENTIFIC regional office Please write the issued number clearly on the outside of the shipping container and ship as directed For all returns the...

Страница 15: ...rohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers l Use only manufacturer recommended parts materials and tools Utility and Electrical l Y...

Страница 16: ...nfo campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website New Delhi DL India...

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