IQ Radios

Design

• Direct Conversion
• Quadrature
• Tayloe Detectors
• A Software Defined Radio for the Masses, Part 4
• Ultra Low Noise, High Performance, Zero IF Quadrature Product Detector and Preamplifier - By Dan Tayloe

Builds

• 5 band switch - QRP Labs
  • 10/15/20/40/80M QRP Labs Band Pass Filter Kits
• VFO-003 Clocks Generator
• AudioAmp380 - Audio Amplifier

QRP Labs - High performance SDR receiver module

• High performance SDR receiver module
  • Build instructions
• Polyphase network module - QRP Labs
  • Build instructions
• 10/15/20/40/80M QRP Labs Band Pass Filter Kits
• Clocks Generator

QCX+ Radio

• QCX+ Radio - QRP Labs

References

• uSDX
• QCX-SSB