W9CF Links

Some free software including source code

• Transmission Line Equation Applet
• A Simple text to morse converter
• Download SBDVP Sound Card Voice Keyer for TRlog. This is version 1.03 for versions of TR after 6.65. You must use the -c command line flag to force compatibility with TR versions 6.65 and before.
  • Preview the user manual
  • Why it probably doesn't work with CT or NA
• General Radio GR821 Applet to convert and correct dial readings
• Schrödinger Equation Solver Applet
• Yagi Antenna Modeling Applet
• Equivalent diameter of Rectangular Cross Section Conductor applet
• T-Network Tuner Simulator Applet

Notes and articles related to electronics

• An ultimatic adapter for iambic keyers or Download PDF file
• Notes on running TRlog under linux
• Spectral Analysis of a CW Keying Pulse or Download PDF file
• Estimating T-network losses at 80 and 160 meters or Download PDF file
• Some notes on the skin depth
• Phase-Shift Network Analysis and Optimization or Download PDF file
• Simplified Mutual Impedance of Nonplanar Skew Dipoles
• Notes on the characteristic impedance of coax with a square outer conductor or Download PDF file
• A Less than Magic Bullet or Download PDF file
  Roy Lewallen called a network that could drive two antennas with equal currents 90 degrees out of phase, independent of the type of antennas, a magic bullet. This is a demonstration that such a network is nonreciprocal.
• Putting a Balun and Tuner Together or Download PDF file
• Approximate R.F. Resistance of Rectangular Cross Section Conductors or Download PDF file
• Analytic expressions for the equivalent diameters of rectangular cross section conductors or Download PDF file
  Here is an update with references showing my results for the equivalent diameters were not new, or download PDF file
  
• Notes on using the Hendricks SOTA end-fed half-wave tuner -- Download PDF file

Other stuff

• My quantum course web page
  
• My old electrodynamics course web page