Simple CW 74HC240 Transmitter using buffer IC

High Performance, Low Part Count: The 74HC240 CW Transmitter 📻⚡

Looking for a fun weekend project? This guide by VU3DXR shows how to repurpose a common 74HC240 Octal Buffer IC into a surprisingly effective CW (Morse Code) transmitter.

By using the gates within the IC, you can create a stable oscillator and a power amplifier stage that delivers enough "flea power" for some serious QRP (low power) fun. It’s an excellent way to learn about RF design and digital-to-analog applications.

Key highlights: ✅ Uses a common, inexpensive logic IC. ✅ Simple circuit architecture—great for beginners. ✅ Perfect for QRP enthusiasts and homebrewers.

Full schematics and build details here: 👉 https://vu3dxr.in/simple-cw-transmitter-using-the-74hc240-buffer-ic/

#HamRadio #QRP #MorseCode #CW #Electronics #HomebrewRadio #VU3DXR #DIYElectronics