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Modifications

• ?- a list of bitx40 board modifications
  • back-to-back diodes to protect the transmit transistor when a strong receive signal comes in -?/g/BITX20/message/19105
  • 100pF capacitor across L7 to improve 14MHz harmonic rejection

Improvements

• Allard's Raduino Code

Hardware Hacks

• 14 Mhz Harmonic Suppression
• USB LSB Modification
• Receiver Front-End Overload Protection
• PTT Pop Fix
• PTT Audio Mute
• CW Operation
• Shielding of wiring
• Speech Processing
• High Power Heat Sinking
• Alternate Band Operation

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External Hardware Hack References