• Home
  • PADDLES, KEYERS, and CW RELATED – (9)
    • KD1JV Code Trainer Kit
    • Improved KD1JV SKC Keyer kit
    • Magnetic Iambic Paddle kit
    • Magnetic Single Lever Paddle kit
    • KX2/KX3 Iambic Mini Paddle kit
    • KX2/KX3 Single Lever Mini Paddle kit
    • KX Mini Paddle Adapter kit
    • Iambic SODA Mini Paddle kit
    • Iambic Piano Mini Paddle kit
  • ANTENNA & RELATED – (11)
    • Micro 40m-15m EFHW Antenna/Tuner/SWR Indicator Kit
    • Universal Multi-Z Tuner
    • KD1JV Power/SWR Meter w/Dummy Load Kit
    • NoTune 80m-10m EFHW Antenna Kit
    • LED SWR Tuning Indicator
    • Wire antenna trap kit
    • 1:1 & 4:1 Baluns
    • QX1 Antenna & BNC Antenna Mount/Adapter
    • QBV 40m/20m-10m Switched Portable Antenna
    • BNC Antenna Mount/Adapter
    • T/R Switch/LPF Adapter for Small Amplifiers
  • Design, Educational, and Mentor Kits – (7)
    • K8TND Patriot SW Receiver
    • K8TND PlaneTalk Air Band Receiver
    • K8TND Sferics Receiver
    • DIP28/Arduino Prototyping Board
    • ELF/VLF Pre-amp
    • Crystal Radio Hi-Z to Low-Z Earbud Adapter
    • Volpe RTTY PLL Demodulator Revisited
  • MISC. – (5)
    • BS170 socketed heatsink kit
    • Polyvaricons
    • Volpe RTTY PLL Demodulator Revisited
    • PTO (Permeability Tuned Oscillator) Mechanism Kit
    • Two PTO test boards
    • QRPBuilder Audio Amplifier
  • Projects
  • Services
  • Archived QRPGuys Assembly Manuals
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Welcome to Qrpbuilder.com

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November 20, 2016February 22, 2026
qrpbuilder

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  • 1:1 & 4:1 Baluns
  • 6m Magnetic Loop Antenna
  • 8.5″ roll paper adapter for the 28ASR
  • Antenna trap kit
  • ANTENNAS
  • Archived QRPGuys assembly manuals
  • BNC Antenna Mount/Adapter
  • BS170 socketed heatsink kit
  • CalQRP Club SST Chassis Kit
  • Crystal Radio Hi-Z to Low-Z Earbud Adapter
  • Design, Educational, and Mentor Kits
  • DIP28/Arduino Prototyping Board
  • elf complete
  • ELF/VLF Pre-amp
  • Feedline Emission Detector
  • Hi-Z Earbud Adapter
  • Iambic Piano Mini Paddle
  • Iambic SODA Mini Paddle
  • Improved KD1JV SKC Keyer kit
  • K8TND Patriot SW Receiver
  • K8TND PlaneTalk Air Band Receiver
  • KD1JV Code Trainer Kit
  • KD1JV Power/SWR Meter w/Dummy Load Kit
  • Kits for sale
  • KX Mini Paddle Adapter kit
  • KX2/KX3 Iambic Mini Paddle kit
  • KX2/KX3 Single Lever Mini Paddle kit
  • LED SWR Tuning Indicator
  • M28ASR Ribbon re-ink attachment
  • Magnetic Iambic Paddle
  • Magnetic Single Lever Paddle
  • Micro 40m-15m EFHW Antenna/Tuner/SWR Indicator Kit
  • MISC.
  • Multi-Z Tuner
  • NoTune 80m-10m EFHW Antenna Kit
  • PADDLES
  • PCB Chassis for KD1JV Skinny Digi Transceiver
  • Polyvaricon
  • Projects
  • PTO (Permeability Tuned Oscillator) Mechanism Kit
  • QBV 40m/20m-10m Switched Portable Antenna
  • QRPBuilder Audio Amplifier
  • QX1 Antenna & BNC Antenna Mount/Adapter
  • Services
  • Sferics Receiver
  • Simple PLL Terminal Unit
  • T/R Switch/LPF Adapter for Power Amplifier
  • TCXO Frequency Standard
  • Telescope mods
  • Two PTO test boards
  • Volpe RTTY PLL Demodulator Revisited
  • Welcome to QRPBuilder