R&S®HD420 Antenna

Mobile TFD Broadband Antenna

This is a discontinued product
More Information? Please contact us.
  • Overview

Key Facts

  • 1.5 MHz to 30 MHz
  • Sky wave transmission over short, medium and global distances
  • Recommended extras

Features

  • Coverage of any distance
  • Omnidirectional coverage through high-angle radiation (NVIS)
  • Broadband operation

Specifications

Frequency range 1.5 MHz to 30 MHz
Polarization linear/horizontal

Key Facts

  • 1.5 MHz to 30 MHz
  • Sky wave transmission over short, medium and global distances

    The Mobile TFD (terminated folded dipole) Broadband Antenna R&S®HD420 operates as a loop antenna on which travelling waves are generated by means of a termination. A tuning unit is not required to attain the specified VSWR.

    Signals are fed in via a transformer at the highest point in the middle of the antenna. Corresponding to its geometry, the TFD antenna radiates horizontally polarized waves and is thus suitable for the transmission of sky waves over any distance.

    Since the antenna is configured as an inverted V, only one antenna support is needed. Where space is limited, the length of the antenna can be considerably reduced through the use of two lateral 4 m masts.

  • Recommended extras
    • Tiltable Mast, 10 m, R&S®KM420A1
    • Tiltable Mast, 4 m, R&S®KM420A2

Features & Benefits

  • Coverage of any distance
  • Omnidirectional coverage through high-angle radiation (NVIS)
  • Broadband operation
  • No tuning unit required
  • Quick assembly/disassembly (approx. 30 min)
  • Suitable for stationary use
  • Extremely favorable price

Specifications

R&S®HD420
Frequency range 1.5 MHz to 30 MHz
Polarization linear/horizontal
Input impedance 50 Ω
VSWR <= 3
Max. input power 400 W
Connector N female
MTBF >100 000 h
Operating temperature range –40 °C to +55 °C
Mechanical interface for R&S®KM420A1 and 10 m tower from Geroh
Max. wind speed 180 km/h (without ice deposit), with
R&S®KM420A1 and 2 × R&S®KM420A2
Dimensions
Length approx. 30 m (with 2 × R&S®KM420A2)
approx. 90 m
Recommended height of feed point approx. 10 m
Weight approx. 13 kg
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