VK1OD Theme page: Transmission lines

• Concepts
• Applications
  
• Calculators
  
• Other

Concepts

• Telegrapher's Equation
• VSWR and displacement
• VSWR measurement
• VSWR Myths
• VSWR FAQ
• VSWR nomographs
• Figure-8 flex used as RF transmission line
• PVC insulated feed line on HF
  
• Additional loss due to VSWR
• MisMatch Loss given VSWR
• Comment on W6VAT article on VSWR
• Is Zs of a HF ham tx typically 50+j0?
• Power in a mismatched transmission line
• A simple VSWR analysis without mirrors
• A comment on W5DXP’s paper “An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line”
• ARRL transmission line loss graphs
• Twelfth wave TL transformers
• The effect of a short discontinuity in transmission line characteristic impedance
• A graphical explanation of energy flow in a practical transmission line
• Avoiding flashover in baluns and ATUs
• Misunderstanding VSWR misleads
• Return Loss
• Modelling practical transmission lines
• Does twisting a two wire open line reduce radiation
• Estimating parameters of two wire transmission lines
• ZL1AN's transmission line challenge
• Insertion Loss vs Transmission Loss
• A worked example of a Bird 43 with a grossly mismatched load
• The merit of measuring VSWR on an open wire line
• High frequency compensation of T/R relay
• Thinking aloud on pipe cap filters
• Estimating Matched Line Loss from Return Loss
• Measuring the velocity factor of coaxial transmission line
• The failure of lossless line analysis in the real world

Applications

• RG-6/U for transmitting applications
• An analysis of current flow at the end of shielded twin line at radio frequencies
• A review of "The Lure of Ladder Line"
• Matching a quarter wave vertical using TL elements
• Optimum length of ladder line
• A test of Zs on an IC7000
• CCS ladder line suitability at lower HF
• Does SWR damage HF ham transmitters?
• Loss components in practical transmission lines at HF
• Accuracy of VSWR meters at high sensitivity
• 300 ohm transmitting ladder line
• Getting more out of your directional wattmeter

Calculators

• RF Transmission Line Loss Calculator / Enhanced
• RF Two Wire Transmission Line Loss Calculator
• VSWR calculator
• Characteristic impedance of transmission line of two square conductors in air

Other

© Copyright: Owen Duffy 1995, 2021. All rights reserved. Disclaimer.