January 07, 2017

A package from Japan - Ultimate3S WSPR transmitter kit, a little project for the new year

Last edited: 08.01.2017

Just before the year's end I was surprised by the delivery of a small package from Japan. It turned out to be the Ultimate3S WSPR transmitter kit that I had ordered from QRP Labs. I was surprised that the package came from Japan, as I thought QRP Labs is a UK based company, and this is also where I expected the package to come from.

This will be a little project for the new year. The Ultimate3S is a standalone 250 mW WSPR transmitter not needing any PC to generate the WSPR signals. I've also ordered the GPS receiver kit with it, which will be used in conjunction with the U3S. I've purchased both a 20m and 40m plug-in Low Pass Filter, but my main focus will be on the 40m band. I'm planning on building a 40m band C-Pole wire antenna and put it up in sloping configuration to use together with the U3S. It's all highly experimental, and I'd also like to see if this antenna can improve the reception on 40m of SOTA CW stations within Europe. With the often extremely weak QRP signals of SOTA activators, even the slightest improvement is very welcome.

See also my blog entry about the use of the U3S in High Altitude Balloon payloads.

Stay tuned!

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