Update (15 June 2016): the team at Juma have posted their professional measurements here: http://www.jumaradio.com/juma-pa1000/JUMA-PA1000-performance.html Travelling light with a 500W+ station The Juma PA1000 is a remarkably light 1000W solid state amplifier, and offers high levels of gain so that … Continue reading
Far north of Helsinki, close to the Russian border and 40 miles from the nearest town, you need to take an unmarked turn-off down a snowy track to reach OH8X. As you crunch through the snow in twilight at -20C, … Continue reading
Not long ago, after many years using a Apple iPhone I decided to give Windows Phone 8 a go, and bought a Nokia Lumia 920. There are a lot of attractive features in the Nokia (especially the camera) and I … Continue reading
I few months ago I bought a Palstar HF Auto, which is a stepper motor driven ATU with high power handling. Although I don’t run a big amp, I do tune my Tokyo HyPower into some strange loads, and I … Continue reading
I live in the centre of a reasonably busy village, near a sub-station for the electricity board. My main antenna for 160m is an inverted ‘L’ with a fair earth system, but it’s a noisy receiving antenna. With little prospect … Continue reading
I recently bought a new set of headphones, to replace my old Heil headset. I met Dave Bottom WI6R of Arlan Communications at Visalia 2011, and he introduced me to his fantastic headsets, a by-product of his motorsport business and … Continue reading
While operating on top band at ZD8UW I had quite a few problems getting the inverted “L” to match at 50 ohms. Even after adjusting the element length this is virtually impossible due to the nature of the antenna. To … Continue reading