A Simple, Inexpensive, Homebrew Touch-Sensitive Twin-Paddle Iambic Key for CW.
Автор: Tony Breathnach, EI5EM
Загружено: 2020-01-02
Просмотров: 2771
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I have been experimenting recently with many different types of iambic keys and keyers and having great fun doing so. There is a lot of repetition of some of my other previous videos in this one. However, I like this build the best of them all.
It's a simple circuit to replicate on a homebrew PCB or even Veroboard and it works exceedingly well. John Parfrey, M0UKD designed the circuit. I simply replicated it and made a few personal modifications.
I used a touch-pad instead of the wrist-strap in John's circuit. I also added 1nF capacitors between the output terminals and ground. I also substituted the transistors using PN2222s and 2N7000s instead of what was recommended by John. I had no 1M resistors in my junk box but uses 1M2s instead.
This is a great project and very easy to build.
John's website is:
https://m0ukd.com/homebrew/simple-cw-...
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