In a recent conversation with my good friend Lewis, we started discussing Morse code, training and the old equipment that was used to educate and teach the code to newcomers. In particular we discussed the old Datong D70 practice oscillators. Lewis carried on the tell me that his Datong like so many others started sending odd illegal characters and essentially rendered the kit useless. Of course you could whip of the lid and replace the logic chips, but I thought of recreating the Datong functionality in a new Arduino sketch…….
“I’ve been mentioning your years that the ARRL Handbook is a fantastic resource for most amateur radio operations. Today I will be talking... Read more
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