Uploaded April 2025 | Updated September 2026, 8 hours ago

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The Tone Tube is a portable Morse Code Practice Oscillator designed to practice your morse code sending on the go. This video goes over the Tone Tube as well as some other CW practice devices.

Palm Straight Key Video: youtu.be/5ECdou3-ZqU

Morserino Video: youtu.be/adzkUQadi2w

DL9SCO QRZ Page: qrz.com/db/DL9SCO

MX-K2 Iambic Keyer: amzn.to/4lbavhD (affiliate link)