4SQRP T41 Kit – Reddit Links

Here are some links to Reddit posts I made concerning the 4SQRP T41 kit:

Teensy Pin Usage

Audio Design and Restructured

GitHub

Hardware Related

• Board Images
• Case Images
• Modules
  • Power Supply
  • Front Panel: Switch Matrix and Encoder
    • Switch Matrix Mod
  • Main
    • Testing and Additional Testing
  • Receive
    • Calibration Mod
      • Testing and w/ Main Board
  • Excite and Revisited
    • Testing, w/ Main Board, and w/ Filter
  • Filter
    • Testing
  • RF Power Amplifier
  • Case
    • Board Installation and Wiring
• Other Testing
  • Voltage Regulators: 4SQRP kit vs v11, Comparing Linear and Switching Voltage Regulators
    • SI5351

T41 Software

• Diving into the T41 Software
• Auto Calibration

Other T41 Related Projects

• International Beacon Monitor
• PC Control App
• Keyboard/Memory CW Keyer and Demo
• Remote Display, Demo and Revisited
• Adding a BPF
• K9HZ 20W PA and Revisited