Ham Radio Projects

Ham Radio Subjects

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

Amplifiers

• RF-Amp
• Kits and Parts Universal Wideband Small Signal RF Amplifier
• RF Amplifiers from China
• Kits and Parts Hybrid Cascode IF Amp Module with AGC
• A Termination Insensitive Amplifier for Bidirectional Transceivers - W7ZOI design

Antennas

• Antennas

Calculators

• Diplexer Calculator
• Dipole and Inverted V lengths
• LC Resonant Frequency Calculator
• PCB Trace Impedance Calculator - pcbway
  • 121 mil wide top, FR-4 over back ground plane = 50 Ohms
• RF Calculators & Conversions - Pasternak
  • Pi Attenuator Calculator

Toroid Calculators

• Toroid Coil Winding Calculator - toroids.info
• Toroid Coil Winding Calculator - Fair-Rite
• Toroid Coil Winding Calculator - 66Pacific

Crystal Filters

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

Filters - Pass

• RF Band Pass Filters
• High-Low-Band Pass Filters
• Kits and Parts Lowpass Filter
• Homebrew SDR HF Transceiver - Band pass filter

Mixers

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

Operating Equipment

• K3NG Keyer
• Icom IC-725
  • Need to fix dropouts

RF Test/Measurement Equipment

• 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
• SMA-HDRS
• TinySA - Spectrum Analyzer

VFOs

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

Vendors

• W2NDG's RadioKitGuide.com
• R&L Electronics - Buy NanoVNA and tinySA there
• DX Engineering
• Kits and Parts dot Com
• QRPer - Kits
• QRP Guys - Kits
• QRP Labs
• The Electroluminescent Receiver Kit
• Dan's Small Parts and Kits