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  • PADDLES and KEYERS
    • Improved KD1JV SKC Keyer kit
    • Magnetic Iambic Paddle
    • Magnetic Single Lever Paddle
    • KX2/KX3 Iambic Mini Paddle kit
    • KX Single Lever Mini Paddle kit
    • KX Mini Paddle Adapter kit
    • Iambic SODA Mini Paddle
    • Iambic Piano Mini Paddle
  • ANTENNAS
    • QX1 Antenna & BNC Antenna Mount/Adapter
    • QBV 40m/20m-10m Switched Portable Antenna
    • BNC Antenna Mount/Adapter
  • Designer, Educational, and Mentor Kits
    • K8TND PlaneTalk Air Band Receiver
    • K8TND Sferics Receiver
    • DIP28/Arduino Prototyping Board
    • Crystal Radio Hi-Z to Low-Z Earbud Adapter
  • MISC.
    • Improved KD1JV SKC Keyer kit
    • PTO (Permeability Tuned Oscillator) Mechanism Kit
    • Two PTO test boards
    • T/R Switch/LPF Adapter for Small Amplifiers
    • QRPBuilder Audio Amplifier
    • Crystal Radio Hi-Z to Low-Z Earbud Adapter
  • Projects
  • Services
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Welcome to Qrpbuilder.com

Design, Educational, and Mentor Kits

These kits are designed for experienced builders and users, to introduce and mentor new enthusiasts and youngsters to the electronics and radio field.

 

K8TND PlaneTalk Air Band Receiver kit

K8TND Sfer-x Receiver kit

Crystal radio earbud adapter kit

DIP28/Arduino Prototyping Board kit

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