Ham Radio Projects

• Software Defined Radio (SDR)
• SSB Receiver Design
• Superhet Receiver Design

Amplifiers

• RF-Amp
• Kits and Parts Universal Wideband Small Signal RF Amplifier
• RF Amplifiers from China

Antennas

• Antennas

Calculators

• Toroid Coil Winding Calculator
• LC Resonant Frequency Calculator

Crystal Filters

• W7ZOI Filters on Kits and Parts Boards
• SSB6 Design
• Crystal Filter Videos

Filters - Pass

• High-Low-Band Pass Filters
• Kits and Parts Lowpass Filter

Mixers

• ADE-MIXER
• DIODE-MIXER
• Kits and Parts Mixers

Operating Equipment

• K3NG Keyer

Test/Measurement

• Antenna Tuner
• Colpitts Crystal Oscillator - Crystal Tester
• Frequency Counters
  • Frequency Counter 5 Digits
  • Frequency Counter 6 Digits
  • Frequency Counter 8 Digits
• NanoVNA - Vector Network Analyzer
• RF Attenuators
  • PE4302 RF Attenuator
  • Homebrew RF Attenuators
  • Attenuator Charts
  • AF7KR "Poor Man's" Step Attenuator
• RF Noise Generator
• Load 50-ohm 20W QRP HF
  • QRP Dummy Load Assembly Instructions
• TinySA = Spectrum Analyzer

VFOs

• HW-9 VFO
• VFO-001
• VFO-002
• VFO-003
• VFO-004
• VFO-005

Vendors

• W2NDG's RadioKitGuide.com
• Kits and Parts dot Com
• QRPer - Kits
• QRP Guys - Kits
• QRP Labs
• The Electroluminescent Receiver Kit
• DAN'S SMALL PARTS AND KITS