The HF passive whip monopole antenna is designed for deployment on permanent installations and includes a deployable groundplane. The antennas’ radiation pattern is suitable for medium to long range HF monitoring. The base of the antenna isolates the monopole whip from the ground structure and has an RF connector protruding from the side. The antenna has been designed to be permanently or semi-permanently mounted on fixed installations such as concrete plinths or other suitable structures. The mast is self-supporting and is able to withstand harsh wind environments without the requirement of stabilizing ropes. The glass fiber insulated radiator is segmented into 3 threaded interlocking sections to allow for more compact shipping. The antenna is intended for use in constructing DF interferometer arrays consisting of a number of MONOA0079 antennas.
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Frequency range | 1 - 30 MHz |
Polarisation | Vertical |
Gain | See graph |
Nominal input impedance | 50 Ω |
Connector | N-type female |
Length | 10 m |
Total mass | 19 kg excluding packaging |
Max whip dimensions (d x h) | Ø 180 mm x 3300 mm |
Base dimensions (d x h) | Ø 450 mm x 250 mm |
Base Plate Dimensions (d x h) | Groundplane diameter |
Groundplane diameter | 20 m ground radials (supplied) |
Mounting method | Bolted to a concrete plinth Plinth with diameter of > 550 mm recommended Environmental: designed to meet the following |
Wind survival | 120 km/h |
Water ingress rating | IP66 |
Temperature | -40 °C to +55 °C (operation) |