Experiments with an End Fed Half Wave Antenna

Portable Setup, Mount Direction
Portable on Mount Direction

I went away to the Tasmania’s West Coast in October 2016 and had hoped to work some stations. For radio, the trip was a bit of a disaster with the place we were staying having lots of solar inverter noise. The other thing was that it was very tedious to use a linked dipole in the location I was in. Since that day I had resolved that I would try and end-fed antenna and see how that goes.

The End Fed Half Wave (EFHW) antenna is popular with many QRP Portable stations, particularly for activities such as SOTA or WWFF. The big drawback of the end-fed is the high impedances they have, which means that you need to carry some sort of Antenna tuner to match the impedance with the radio. The thought of lugging around an antenna tuner and then having to retune every time I switched frequency was less than appealing though.

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Activating Peter Murrell Reserve VKFF-1146

QRV VKFF-1146As much as I am a fan of Summits On The Air (SOTA), activating a summit requires a level of portability that I am yet to obtain as well as a level of fitness that I am yet to obtain too, which is why I got pretty excited when I discovered the World Wide Flora and Fauna (WWFF) Program.

Recently there have been a number of additions made to the Database for VK7, which originally was national parks only. The inclusion of a number of new conservation reserves meant that I was able to activate Peter Murrell Reserve which was only 30 minutes away as opposed to a significant 2 hour drive to the nearest national park. It also helped that the carpark fell just within the VKFF boundary.

Being such a glorious day weather wise I made the spur of the moment decision to activate the park.

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Going Mobile

QRV Mount Rumney
Mobile test run at Mount Rumney. not a bad view!

For a long time it has been a goal to take my own station portable to work HF. This week I finally achieved that goal.

It’s taken me a long time to get there, with the project starting in 2006 when I purchased a portable aluminium mast for the car that can be assembled as high as 12m (39.3 feet). With the help of Bruce¬†(ex VK7MBD) a custom tow bar mount was made, allowing the assembly and raising of the mast to be possible by 1 person.¬†After this, things went quiet on that project as a result of my hiatus from the hobby.

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