Category Archives: Construction

Building a Hendricks 41dB Step RF Attenuator

Two or three years ago I had a browser tab sitting open on the Hendricks 41dB Step RF Attenuator from Pacific Antenna/QRP Kits in California.  For some reason I never ordered one and when I finally remembered that I was … Continue reading

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Building a JYE Tech Cap Meter 060 Kit

One of the new local Foundation licence holders recently did the Intermediate course and exam and as part of her practical assessment, she built a capacitance meter which I’m sure helped her pass the course.  Well done, Caroline! I fancied … Continue reading

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Time for a new aerial, I’ve replaced my doublet with an OCFD

Earlier this year I decided it was time to replace my doublet with a new wire aerial.  There was nothing actually wrong with the doublet, I’ve worked plenty on it but it always galled me that I had a smarttuner … Continue reading

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A detailed look at three different methods of operating the low power WSPR mode

There seems to have been an upsurge in people operating WSPR recently.  Barely a day goes by (sometimes barely an hour) without someone posting a map of where their signals have been received on Twitter.  When I first started experimenting … Continue reading

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Installing a new external ADS-B receiver

Not long after my last post on this subject, back in January, the preamp I had mounted in the box at the top of 30ft of pole strapped to the side of my house failed and I was forced to … Continue reading

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Returning to data modes after an enforced break

My shack computer is an Apple iMac.  For a few years, I’ve operated a lot of data modes and been very successful in data contests.  I’ve always enjoyed data modes and in 2012 I operated GO6NHU to celebrate the London 2012 Olympics … Continue reading

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Building a Raspberry Pi internet watchdog

I wasn’t sure whether to post this or not as it’s not specifically amateur radio – But there’s a small amount of electronics involved so I figured it might be of interest. A few days ago while Susan and I … Continue reading

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