Transmission lines — Technical Articles

The Transmission Lines Knowledge Base focuses on the backbone of every RF system: coax, open-wire, and connectors. These articles cover losses, SWR behavior, shielding myths, and connector choices, all backed by engineering analysis rather than folklore. Each entry is datestamped so you can see when it was last validated or updated.

Transmission Lines — Technical Articles

• [2025-10-16] Reflections Revisited — What’s True and What’s Been Refined Since W2DU
• [2025-10-15] Half-Wavelength Coax Myth — Why Quarter-Wave Tricks Actually Work
  
• [2025-09-20] Why Coax Length Matters Less at VHF and Above (Except for Loss)
  
• [2025-09-18] Why Ladder Line Length Matters Between Tuner and Antenna
• [2025-09-15] Antenna Impedance vs. Transmission Line Impedance
  
• [2025-09-09] 50 Ω Coax — Balanced at Its Design Impedance, Unbalanced When It’s Not
  
• [2025-09-05] Why Minimum Coax Length Matters for Monoband Antennas
• [2025-08-14] Tuning Your Antenna System Using Coax Cable Length
• [2025-08-14] Feedlines, coaxial and balanced feedlines (ladderlines)
• [2025-08-07] The Open Wire Balanced Feedline: The Forgotten Ultra-Low Loss Champion
• [2025-07-21] SWR Losses Are Manageable — But Know Your Coax
• [2025-06-30] Why Your HF Antenna Doesn’t Care If It’s N or PL
• [2025-06-23] Why Shielding Balanced Feedlines for HF Ham Radio Is a Bad Idea