Blog

• COTAG RFID analysis and proxmark COTAG demodulation implementation

  published: 2026-06-23

  tags: [ #RFID, #COTAG ]

  COTAG RFID analysis and proxmark COTAG demodulation implementation

• Remote HAM operation (remote SDR panorama, remote CAT control, remote PTT/TX, and remote audio)

  published: 2026-06-07

  tags: [ #amateur radio, #remote HAM operation ]

  Remote HAM operation (remote SDR panorama, remote CAT control, remote PTT/TX, and remote audio)

• SDR panadapter with antenna switch/splitter

  published: 2026-03-07

  tags: [ #amateur radio, #SDR ]

  SDR panadapter with antenna switch/splitter

• 80m dipole quick extension

  published: 2026-02-28

  tags: [ #amateur radio, #antennas ]

  Handy extension trick to make the 80m wire dipole be suitable at different portions of the band

• DIY 5-element 70cm yagi antenna

  published: 2025-12-04

  tags: [ #amateur radio, #antennas ]

  Home-made 5-element 70 cm yagi antenna

• 2-element delta loop antenna for 6m band

  published: 2025-04-13

  tags: [ #amateur radio, #antennas ]

  Home-made 2-element delta loop antenna for 6m

• Shortened dipole for 80 m band

  published: 2024-11-26

  tags: [ #amateur radio, #antennas ]

  Home made electrically shortened center-fed dipole for the 80m band