SPE-13-8-019/C/EZ

Page 2 of 18

1. INTRODUCTION

The 915MHz Hercules ISM Antenna is a high performance steel thread-mount ISM

antenna for external use on vehicles and outdoor assets worldwide. Omni-directional

high gain across all bands ensures constant reception and transmission. Durable UV

resistant PC housing is resistant to vandalism and direct attack. At only 29 mm height it

complies with the latest EU height restrictions directives for roof-mounted objects, with a

diameter of 52 mm. Designed to not catch on tree-branches. The antenna can be

mounted on metal structures.

2. SPECIFICATION

ELECTRICAL

Standard

ISM

Band (MHz)

915

Frequency (MHz)

902-928

Cable Length (m)

0.3

1.0

2.0

3.0

5.0

Return Loss (dB)

-13.68

-13.86

-15.16

-14.61

-17.54

Efficiency (%)

27.49

44.13

38.36

27.09

21.10

Gain (dBi)

1.15

2.75

3.14

1.85

0.25

Polarization

Linear

Impedance

50 ohms

Max Input Power

10 watts

VSWR

<2.5:1

*Note: The return loss, efficiency and gain in the above table, were measured

on 30x30 cm metal plate with RG174 cable. For a specific case performance

refers to the below plots.