Kits
Here are links to NFARL kits:
| Code Practice Oscillator | Our Code Practice Oscillator is a great little device on which you can practice your Morse Code skills. It is simple to build and easy to use. All you need are two 3V coin batteries and your knowledge of Morse Code. Even if you are just beginning to learn Morse Code you'll probably find this practice oscillator is a handy way to practice timing and develop an ear for Morse Code.
The CPO was developed and first used in 2020. Our customers are very happy with the kit. Here is a note from one: I spent the most enjoyable evening building this code practice oscillator with my very-excited 10 year-old grandson. It was perfect: low parts count, easy assembly, blinky light, and built-in key. He is psyched, pounding away learning Morse. He must have thanked me a dozen times. Now he says he wants to get his license. Best $10 I've spent in a long time. Click here to go to a web page with more information about the kit and a link to a PDF file containing instructions for constructing it. |
| Joule Thief | This kit was sold to fund our 2009 Library project. It is a great kit to use in learning basic soldering, circuit fundamentals, and Manhattan construction techniques. All kits have been sold. Click here to see instructions for building the kit. |
| Power Gate | The Power Gate allows you to run your station with fulltime, instantaneous power backup. A pair of Schottky diodes operate as an electronic gate to connect either of two power supplies to your rig. Usually one supply will be your normal AC connected station power supply and the other a backup battery. Switching is completely automatic in both directions; the source with the highest DC voltage will be connected automatically to your rig. All kits have been sold. Click here to download a PDF file containing instructions for assembling the Power Gate kit. |
| Retro Radio | This radio is a direct conversion receiver for the US AM band. The transmitted bandwidth is limited to the usual amplitude modulation at 4.5 kHz on medium wave and therefore achieves no FM quality. But it has, especially in the evening and at night, a much greater range and can receive stations from all over America.
All kits have been sold. Click here to download a PDF file containing an overview of the radio and kit assembly instructions. |
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Last updated
May 5, 2020
