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It’s only 1/8″ across so those five wires sticking out each side are very close together. The tip of the soldering iron I tried to use is too big – it bridges all five wires at once. I should’ve stopped … Continue reading
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The green circuit board seen here is the first of three major assemblies, the DDS (Direct Digital Synthesis) board on which the transmit signal will be generated. Shown also are the tools and especially the large magnifier in the upper-right … Continue reading
In the previous sections, we eavesdropped on a live conversation between two ham stations, one in Windsor Ontario and the other in Venezuela on the northern coast of South America. And I mentioned that while you’ll find hams of all … Continue reading
In the first part of this post, we had a quick look at a conversation taking place between ham radio stations in Ontario Canada and Venezuela where I just happened to be in the right place, Phoenix Arizona, to “hear” … Continue reading
This gallery contains 5 photos.
I’m running my ham radio that uses the computer to do a lot of the work. Here’s a quick run down on what you see. First, notice there are four windows including a big, multi-section one in the upper left, … Continue reading
While there are several ASCII to Morse code translators out there, I haven’t seen the encoding used herein. It is slightly denser than most and should work nicely in machines with a tight memory constraint. The basic translation represents each … Continue reading
Upper Pulley Location (Not Me At 55′) I made my first contact yesterday after many years. I ran an End-Fed Half Wave (EFHW) as a vertical up the side of a tall palm tree using the rope and pulley installed … Continue reading
One of my passions is experimenting with antennas, wire antennas for HF to be precise. I want to be able to improvise and adapt to the situation at hand whether I’m at home, traveling on business, or hiking in the … Continue reading
I’m using PC board to construct some custom enclosures. The materials and construction techniques will be the topic of a future posting here. But in working out all the details, there’s an interesting challenge to bolting the box shut. Specifically, … Continue reading
Juma RX-1 Direct Conversion Receiver (Click for larger image) Here’s my completed Juma RX-1 direct conversion DDS receiver. If you’re familiar with the unit, you can see I’ve pretty much built it as the designers, Juha Niinikoski OH2NLT and Matti … Continue reading