IS.05.B.301111

## **SPECIFICATION** 

**IS.05 915MHz Hercules ISM Band Antenna** 

Part No. : **IS.05.B.301111** Product Name : 915MHz Hercules ISM Band Antenna Screw-mount (Permanent mount) Features : Low Profile Height: 29mm,  Diameter: 49mm Heavy Duty Screw Mount UV and Vandal Resistant PC Housing IP67 & IP69K – Waterproof Standard cable is 3m RG174 with SMA(M)connector fully customizable ROHS Compliant 

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## **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** 

|~~Ld~~|**ELECTRICAL**<br>~~Ld~~|**ELECTRICAL**<br>~~Ld~~|**ELECTRICAL**<br>~~Ld~~|**ELECTRICAL**<br>~~Ld~~|**ELECTRICAL**<br>~~Ld~~|
|---|---|---|---|---|---|
|**Standard**<br>~~Ld~~<br>~~a~~|**ISM**<br>~~Ld~~|||||
|**Band (MHz)**<br>~~a~~|**915**|||||
|**Frequency (MHz)**<br>~~a~~|**902-928**|||||
|Cable Length(m)<br>~~a~~|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. 

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||**MECHANICAL**|
|---|---|
|Dimensions|Height=29mm and  Diameter=52mm|
|Cable length|3m RG174–Fully Customable|
|Connector|SMA-Male–Fully Customable|
|Casing|UV Resistant PC|
|Base and Thread|Nickel plated steel|
|Thread Diameter|18 mm|
|Weather proof gasket|Rubber|
|Sealant|Rubber Stopper|
|ENVIRONMENTAL<br>~~[~~||
|Protection|IP67 & IP69K|
|Corrosion|5% NaCl for 48hrs - Nickel plated steel base and thread|
|Temperature Range|-40°C to +85°C|
|Thermal Shock|100 cycles -40°C to +85°C|
|Humidity|Non-condensing65°C 95% RH|
|Shock(DropTest)|1m dropon concrete 6 axes|
|Cable Pull|8 Kgf|
|Recommended Torque<br>Setting for Mounting|24.5N∙m|
|Maximum Torque Setting<br>for Mounting|29.4N∙m|



*Note: Specifications may be subject to change 

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## **3. TEST SET UP** 

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**Figure 1.** IS.05 Antenna test set up in free space, 30x30cm metal plate and 60x60 cm metal plate, R&SZVL6 VNA (left) and R&S4100 CTIA 3D Chamber (Right). 

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## **4. ANTENNA PARAMETERS** 

## **4.1 Return Loss** 

**Figure 2.** Return Loss of the 915MHz Hercules ISM antenna in free space 

**Figure 3.** Return loss of the 915MHz Hercules ISM antenna on 30x30 cm metal plate. 

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**Figure 4.** Return loss of the 915Mhz Hercules ISM antenna on 60x60 cm metal plate. 

## **4.2 Efficiency** 

**Figure 5.** Efficiency of the 915MHz Hercules ISM antenna in free space. 

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**Figure 6.** Efficiency of the 915MHz Hercules ISM antenna on 30x30 cm metal plate. 

**Figure 7.** Efficiency of the 915MHz Hercules ISM antenna on 60x60 cm metal plate. 

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## **4.3 Gain** 

**Figure 8.** Gain of the 915MHz Hercules ISM antenna in free space. 

**Figure 9.** Gain of the 915MHz Hercules ISM antenna on 30 cm metal plate. 

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**Figure 10.** Gain of the 915MHz Hercules ISM antenna on 60 cm metal plate. 

## **4.4. Radiation Pattern** 

**Figure 11.** Radiation pattern at 900 MHz, Figure 1 as reference (dB), with 2m RG174 cable and free space. 

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**Figure 12.** Radiation pattern at 915 MHz, Figure 1 as reference (dB), with 2m RG174 cable and free space. 

**Figure 13.** Radiation pattern at 930 MHz, Figure 1 as reference (dB), with 2m RG174 cable free space. 

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**Figure 14.** Radiation pattern at 900 MHz, Figure 1 as reference (dB), with 2m RG174 cable and 30x30 cm metal plate. 

**Figure 15.** Radiation pattern at 915 MHz, Figure 1 as reference (dB), with 2m RG174 cable and 30x30 cm metal plate. 

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**Figure 16.** Radiation pattern at 930 MHz, Figure 1 as reference (dB), with 2m RG174 cable 30x30 cm metal plate. 

**Figure 17.** Radiation pattern at 900 MHz, Figure 1 as reference (dB), with 2m RG174 cable and 60x60 cm metal plate. 

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## **Figure 18.** Radiation pattern at 915 MHz, Figure 1 as reference (dB), with 2m RG174 cable and 60x60 cm metal plate. 

**Figure 19.** Radiation pattern at 930 MHz, Figure 1 as reference (dB), with 2m RG174 cable 60x60 cm metal plate. 

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## **5. DRAWING** 

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## **6. INSTALLATION** 

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## **7. PACKAGING** 

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Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. 

Reproduction, use or disclosure to third parties without express permission is strictly prohibited. 

Copyright © Taoglas Ltd 

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