ARS1 Phase-variable antenna system for detecting interfering signals Aeronautical Band VHF 108 170 MHz

Q: What is the ARS1 system used for?

ARS1 is a phase-variable directional antenna system designed for rapid and precise direction finding of interfering signals. It is optimized for aeronautical VHF and airband monitoring from 108 to 170 MHz, supporting radiomonitoring and RF signal survey activities.

Q: How accurate is the ARS1 in locating an interference source?

ARS1 features a very narrow detection capability with an angle towards the point of interference of 2 deg and an attenuation compared to the interference direction of >=35 dB. This helps highly accurate localization during interference hunting and spectrum monitoring.

Q: What are the key RF specifications of ARS1?

The system covers 108-170 MHz with 11 dBi gain, return loss >=-14 dB, VSWR <=1.5:1, 50 ohm nominal impedance and vertical polarization. Maximum input power is 200 W and the standard connector is N female.

Q: Which versions are available and how is it installed?

ARS1 is available as ARS1 (with unscrewed elements for transport) and ARS1F (folding elements, for tactical use only). It uses a fiberglass mating support, mounts on a 60 mm mast and is fully DC grounded for improved lightning behaviour.

ARS1 Phase-variable antenna system for detecting interfering signals Aeronautical Band VHF 108 170 MHz

108 - 300 MHz

INTERFERENCE DIRECTION-FINDING SYSTEM – RANGE 108 MHz TO 170 MHz

MOD. ARS1
Phase-variable directional antenna system

Professional interference direction-finding system for VHF 108–170 MHz, optimized for aeronautical VHF / airband monitoring and rapid, precise localization of interfering signals.

ARS1 Phase-variable antenna system for detecting interfering signals Aeronautical Band VHF 108 170 MHz

Phase-variable directional antenna system for rapid and precise direction finding of interfering signals. Optimized for aeronautical VHF bands and adjacent spectrum allocations in the 108–170 MHz range, it features a very narrow detection capability (angle towards the point of interference: 2°) to support highly accurate localization. High rejection versus unwanted directions (attenuation vs. interference direction: ≥ 35 dB) helps operators identify the origin of interference quickly and reliably during field investigations.

Radiomonitoring
RF Signal Survey
Monitoring and measurement of RF signals

ELECTRICAL DATA

Frequency range: 108-170 MHz
Bandwidth: 62 MHz
Max gain: 11 dBi
Return loss: >= -14 dB
Nominal impedance: 50 ohm
Polarization: V
Angle towards point of interference: 2 deg
Attenuation compared to interference direction: >= 35 dB
E beamwidth 108 MHz: 58 deg
E beamwidth 140 MHz: 55 deg
E beamwidth 170 MHz: 52 deg
Max power: 200 W
Connector: Nf
Lightning protection: All metal parts are D.C. grounded

MECHANICAL DATA
Dimensions (L x W x H): 2 x 1733 x h1384 x 130 mm
Antenna elements: 9+9
Weight without clamp: 11 kg
Mounting: 60 mm
Mating support: Fiberglass

MATERIALS
Anticorodal aluminium - Brass - Teflon - Polyvinyl chloride
All materials are RoHS compliant

ORDERING AND PACKAGING INFORMATIONS
ARS1: antenna system with unscrewed elements
ARS1F: antenna system with folding elements (for tactical use only)

PACKAGING
3x box: 1800 x 200 x 200 mm / weight 11 kg

Frequently asked questions about ARS1

Quick answers for engineers and operators using the ARS1 phase-variable direction-finding system for aeronautical VHF / airband monitoring and interference hunting.

What is the ARS1 system used for?

ARS1 is a professional phase-variable directional antenna system designed for direction finding and fast localization of interfering signals in VHF airband / aeronautical monitoring from 108 to 170 MHz. It supports radiomonitoring, RF signal survey and interference investigations at airport and ATC sites.

How accurate is the ARS1 in locating an interference source?

The system provides a very narrow detection capability with an angle towards the point of interference of 2 deg and an attenuation compared to the interference direction of >=35 dB. This helps accurate identification of the interference origin during field measurements.

What are the key RF specifications of ARS1?

ARS1 covers 108-170 MHz with 11 dBi gain, return loss >=-14 dB, VSWR <=1.5:1, 50 ohm nominal impedance and vertical polarization. Maximum input power is 200 W and the standard connector is N female.

Which versions are available and how is it installed?

Two versions are available: ARS1 (antenna system with unscrewed elements for transport) and ARS1F (folding elements, for tactical use only). The system uses a fiberglass mating support, mounts on a 60 mm mast and is fully DC grounded for improved lightning behaviour.

ARS1 Phase-variable antenna system for detecting interfering signals Aeronautical Band VHF 108 170 MHz - Protel Antennas - Professional Antennas for Telecomunications

ARS1 Phase-variable antenna system for detecting interfering signals Aeronautical Band VHF 108 170 MHz

Frequently asked questions about ARS1

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