The Eagle vehicle for the challenge is a Barrett training vehicle and has the 2050 HF transceiver, 2019 auto tuning HF antenna, 2018 Mobile magnetic loop HF antenna and the 2065 dual antenna switch. This type of antenna is also successfully used in mountainous or obstructed terrain.Īs our customers have recognised the benefits of having both antennas mounted on their vehicles, Barrett recently released the 2065 dual antenna switch, which allows the operator to switch between the two antennas, while remaining in the moving vehicle.
The NVIS design of the 2018 antenna and its narrow band width (high-Q) exhibit high immunity to background noise from the engines of the two moving vehicles.Īs a result, the voice quality over this distance is clear. To overcome this, the Barrett 2018 magnetic loop HF antenna is near vertical incidence skywave (NVIS) in design and is ideal for distances between 30km and 150 km. To achieve medium distance communications between Brains and Eagle of 100km, the Barrett 2019 may not be suitable due to the skip zones typical with whip-based antennas. These messages are relayed to the Barrett Communications head office in Perth, 2,505km away, via the internet. The 2019 has the option for an internal fit GPS receiver, which when connected to the Barrett 2020 email, fax and data system and vehicle tracking allows for data to also be transmitted to Alice Springs.ĭuring the challenge, Eagle is transmitting GPS coordinates for vehicle tracking and sending emails with image attachments via HF to Alice Springs.
This typical whip based antenna may transmit and receive signals 3,000km away, depending on frequency selection and environmental conditions, much greater distances may be achieved.
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