Ready to get on digital modes like FT8, Winlink, APRS, and AllStar without breaking the bank? In this video, we’ll break down the PTT circuit on the TOADs DI USB sound interface, showing you exactly how a simple NPN transistor lets your computer key your radio — just like pushing the mic button.
Whether you’re brand-new to ham radio or looking to level up your technical skills, this easy-to-follow explanation will show you how the circuit works and why it’s so important for digital modes.
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👉 Documentation: https://geni.us/toads-di
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👉 Treedix RJ-45 Breakout Board: https://geni.us/rjCLNC
👉 10k Ohm Resistor: https://geni.us/JOHso
👉 BC547 Transistor: https://geni.us/SALAj
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👉 Dupont Wires: https://geni.us/Hs41kGJ
👉 PCB Prototype Boards: https://geni.us/6ovrxgI
👉 Standard Double Row Pin Headers: https://geni.us/R7Ecka
Works with ANY radio and YOUR imagination!
👉 Winlink
👉 Allstar
👉 APRS
👉 FT8
👉 JS8Call
👉 Packet Radio
📌 Watch the full series where we cover:
• COS (Carrier Operated Squelch)
• Audio In
• Audio Out
• PTT (today’s video)
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