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K9AY Controller at operating position. |
In 2015, I designed a controlled based on a 74LS175 Quad D-type flip-flip. It was pretty simple in concept, but, it didn't work. The bounces from the switches changed directions rather randomly.
Which lead me to write this article, about a solution - using a PIC micro-controller to solve the bouncing switch problem.
I built that prototype, and wrote about it three years ago. One problem was that the wiring appeared flaky, it wasn't always dependably switching. I figured I needed to design a PC board.
While I've been working on that, I had a thought a couple of weeks ago -- maybe I could piggyback a second piece of perfboard to my prototype and keep the board from flexing, and that would avoid the flaky wiring. Easy enough to try.
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K9AY Antenna box at base of tree used as support |
With that fixed, I couldn't find any reason not to put the K9AY back up. I used 42 feet of wire in each loop. This is a good compromise length for 160, 80 and 40m.
Some on the air testing shows that it works pretty much as expected, and the push-buttons make it really easy to change directions.
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