Price:€17.76+

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Code Practice Oscillator Kit

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Highlights

  • Made by NightFireLLC
  • Materials: PCB, Components

This Code Practice Oscillator Kit is a very popular and practical device used in Ham Radio for practicing your Morse Code. It is designed as a One-Transistor, Twin-Tee, Audio Phase-Shift, Sinewave Oscillator with an Audio Amplifier on the output.

The kit produces a very clean sinewave of 700Hz

Note: 700Hz is extremely popular and very pleasing to the human ear.

Plug your existing key or "bug" into the 1/4" phono jack or wire it in directly and leave the phono jack out, your choice. You can even put in a momentary switch of your choice. The input requires a switch to ground to produce a tone.

The PCB is 2.0" x 3.0" and is very easy to build.

This kit is offered with a "Built & Tested" option for those that do not want to build the kit themselves.

This kit does not include a battery nor a speaker. Below is a detailed introduction to component identification and kit assembly.
We are an American company and ship out of Fl.

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  • Dispatches within 1–3 business days
  • Returns & exchanges accepted within 30 days
  • Dispatched from: United States

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Reviews for this item

Buyer highlights, summarised by AI: Would recommend · Fast delivery · Love the shop · Easy to assemble · Works great · Easy to use · Great quality

3.7

We calculate this number using an average of all ratings from the past twelve months.

(7 reviews)

5.0 Item quality
5.0 Delivery
5.0 Customer service
100% Buyers recommend
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5 out of 5 stars 5 This item

Michael 12 Feb, 2026

It's a very nice kit and easy to assemble. It worked correctly for me without any problems. Basic soldering skills are needed but it is all through hole and not difficult at all to build.

Michael 12 Feb, 2026

5 out of 5 stars 5 This item

Glenn 01 Jan, 2025

This code practice oscillator kit has plenty of audio with a clean crisp tone. If deciding to build this as a kit, you need to be able to read a schematic and be able to do fine soldering. I bought the kit and have been an electronic kit builder for decades. I put the kit together in less than an hour. It worked perfectly once I soldered in all the components and connected a 9volt battery, speaker, and key. There are not a lot of in expensive choices for a practice code oscillator. I would highly recommend this one!

Glenn 01 Jan, 2025

5 out of 5 stars 5 This item

Owen 30 Oct, 2024

Definitely would recommend for someone who is wanting a simple, easy, and inexpensive Morse Code practice oscillator for school, personal use, etc. Shipping arrived WAY sooner than expected, and PCB borad was of utmost excellent quality. Thank you NightFire Electronics for your excellent quality kits! I will definitely be buying from this store again soon

Owen 30 Oct, 2024

5 out of 5 stars 5 This item

Victor 17 Mar, 2024

Item just as described and was shipped super fast! Will visit and buy from this shop again.

Victor 17 Mar, 2024

NightFireLLC
NightFireLLC ·

Florida, United States

We calculate this number using an average of all ratings from the past twelve months. 4.6
·
4.6k sales
·
6 years on Etsy

Typically responds within 24 hours

Typically responds within 24 hours

Smooth dispatch Has a history of dispatching on time with tracking.

Speedy replies Has a history of replying to messages quickly.

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