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411 Terminated Folded Dipole
Antennas & Masts HF Base Antennas and Tuners

411 Terminated Folded Dipole

BROADBAND HF FOLDED DIPOLE

The 411 Terminated Folded Dipole is a 2-wire broadband HF antenna covering 2 to 30 MHz at up to 1000 W PEP, mountable horizontally or as an inverted-V for short to medium distance fixed station communications.

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INNOVATION AT OUR CORE

BROADBAND OPERATION ACROSS 2 TO 30 MHZ

True broadband operation across 2 to 30 MHz defines the 411 Terminated Folded Dipole. A 2-wire terminated design provides unmatched performance for short to medium distance HF communications in fixed stations, with a nominal 50 ohm input impedance and a typical VSWR of 2.5:1. The 411 Terminated Folded Dipole is offered at 150 W PEP and 100 W CW, or 1000 W PEP and 600 W CW for higher power links, covering every operational need.

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FLEXIBLE MOUNTING FOR EVERY SITE

Adaptability is the operational hallmark of the 411 Terminated Folded Dipole. Configurable for Horizontal or inverted-V mounting, this Dipole can be optimised for both long-distance or short to medium range links. As a 2-wire broadband HF antenna, the 411 Terminated Folded Dipole ships completely assembled and ready for installation.

PROVEN RESILIENCE

BUILT FOR HOSTILE ENVIRONMENTS

Designed for the most hostile environments on earth. The 411 Terminated Folded Dipole has an IP44 rated balun enclosure, is corrosion-resistant, UV-resistant and has a wind rating of 160 km/h. The 411 Terminated Folded Dipole holds its broadband performance in conditions where other communications systems fail, keeping you connected when it matters most.

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FREQUENCY

Broadband 2 to 30 MHz coverage for fixed station HF communications.

POWER RATING

150 W PEP / 100 W CW, or 1000 W PEP / 600 W CW variants.

FLEXIBLE MOUNT

Horizontal or inverted-V for medium to long or short to medium links.

50 OHM MATCH

Nominal 50 ohm input impedance with typical VSWR of 2.5:1.

WIND RATED

160 km/h wind rating with corrosion and UV resistant materials.

IP44 BALUN

IP44 rated balun enclosure for ground or rooftop installation.

NO GROUNDING

No grounding required; ships completely assembled with rope and pulley.

Antenna type 2-wire terminated folded dipole broadband HF antenna
Models C standard and M militarised variants; 150 W and 1000 W classes
Element lengths 43 m, 34 m, and 27 m variants
Mounting Horizontal or inverted-V on suitable support structures
Propagation Short to medium distance HF; NVIS via inverted-V
Antenna location Suitable for ground or roof top installation
Grounding requirements None required
Frequency range 2 to 30 MHz
Power rating 150 W PEP / 100 W CW; 1000 W PEP / 600 W CW
Input impedance 50 ohm
VSWR Typically 2.5:1
RF connector 150 W C: UHF type; 1 kW C and all M variants: N-type
Element lengths 43 m, 34 m, or 27 m
Wind rating 160 km/h
Ingress protection IP44 balun enclosure
Max coaxial cable length Up to 30 m with RG58; up to 100 m with RG213
Installation kit 50 m UV resistant rope and pulley; supplied assembled
Militarised M features Blackened spreader bars, stainless steel wire elements, N-type connector
Compatible masts CT15 telescopic, 10 m premium guyed, 12 m and 15 m guyed
Materials Corrosion and UV resistant
DATASHEET 411 Terminated Folded Dipole Datasheet
MISSION OUTCOME

411 Terminated Folded Dipole delivers a dependable broadband HF link from a fixed station that adapts to any site. The broadband HF antenna covers 2 to 30 MHz at up to 1000 W PEP, mounting horizontally for long range or as an inverted-V for NVIS short range work with no grounding required. Three element lengths and militarised M variants match the antenna to the required operational need. Built from corrosion and UV resistant materials with a 160 km/h wind rating and IP44 balun, the 411 Terminated Folded Dipole stands up in the most hostile environments.