ARL531 logarithmic antenna HF 2-30MHz for long distance communication
The ARL531 is a big size HF log-periodic directional antenna designed for professional long-distance and international radio links in the 2–30 MHz band. Its 7 dB gain, horizontal polarisation and 26 m boom make it suitable for high power HF transmitters up to 2000 W in demanding environments.
This antenna is typically used in HF broadcast services, governmental and defence communication networks, coastal and maritime HF communications, emergency and civil protection systems and other professional infrastructures where stable coverage, robustness and long-term reliability are required.
MOD. ARL531 – COD. ARLP1217KZ
ELECTRICAL DATA
Frequency range MHz 2÷30
Bandwidth MHz 28
Gain typ. dB 7
VSWR <=2.5
Nominal impedance 50 oHM
Polarization H
E beamwidth typ. -3 dB 30°
H beamwidth typ. -3 dB 80°
Front back ratio dB <=20
Max Power W 2000
Connector 7/8
Lightning protection All metal parts are D.C. grounded
MECHANICAL DATA
Dimension length mm 26000
Weight Kg 400
Mounting clamps diameter mm 300
MATERIALS
Bandwidth MHz 28
Gain typ. dB 7
VSWR <=2.5
Nominal impedance 50 oHM
Polarization H
E beamwidth typ. -3 dB 30°
H beamwidth typ. -3 dB 80°
Front back ratio dB <=20
Max Power W 2000
Connector 7/8
Lightning protection All metal parts are D.C. grounded
MECHANICAL DATA
Dimension length mm 26000
Weight Kg 400
Mounting clamps diameter mm 300
MATERIALS
Aluminium – Teflon – Iron – Stainless Steel/AISI 304
Frequently asked questions about ARL531
Some common questions about the ARL531 HF log-periodic directional antenna 2–30 MHz:
What are the typical applications of the ARL531?
The ARL531 is a big size HF log-periodic directional antenna designed for
2–30 MHz long-distance and international radio links. It is typically used
for HF broadcast services, governmental and defence communication networks,
coastal and maritime HF communications and other professional HF infrastructures
where high power and reliable coverage are required.
Which electrical performance does the ARL531 offer?
The ARL531 covers the 2–30 MHz band with a typical gain of
7 dB, VSWR ≤ 2.5 and 50 ohm
nominal impedance. It is rated for up to 2000 W RF power and uses a
7/8” connector, making it suitable for high power HF transmitters and
professional HF stations.
Which polarisation and radiation pattern does the ARL531 provide?
The ARL531 operates with horizontal polarisation. It offers a typical
E-plane beamwidth of about 30° and an H-plane beamwidth of about 80°,
providing a directional pattern suitable for long-distance HF links and controlled coverage
towards the target service area.
What mechanical characteristics and installation constraints should be considered?
The ARL531 has an overall length of about 26 m and a weight of
approximately 400 kg. It is mounted with 300 mm diameter clamps
on a suitable mast or tower. The antenna is built with aluminium, Teflon, iron and
stainless steel AISI 304, with all metal parts DC grounded, and requires a robust
support structure and professional installation to withstand wind and environmental loads.
Related topics and searches
Typical queries and applications related to the ARL531 HF log-periodic antenna:
2–30 MHz HF log-periodic antenna
long-distance HF radio link antenna
HF broadcast and shortwave services
2000 W high power HF antenna
directional HF antenna 7 dB gain
horizontal polarisation HF antenna
professional HF antennas for government and defence
Protel HF antenna systems 2–30 MHz
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