W9CF Links

Some free software including source code

• CW simulator in python. This is mostly a clone of Morse Runner.
• TR log for linux
• 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. It's recommended to use trlinux above instead. 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
• Yagi Antenna Modeling Applet
• Equivalent diameter of Rectangular Cross Section Conductor applet
• T-Network Tuner Simulator Applet

Notes and articles related to electronics

• Notes on writing udev rules for identifying two different TS-590SG rigs connected to the same computer Download pdf file PDF file
• Notes on adding auxiliary outputs to the YCCC SO2R Mini Download pdf file PDF file
• Single-op two-radio (SO2R) notes. Download PDF file
• Notes on designing a high-power 20m bandstop filter. Download PDF file
• Notes on the operation of the MFJ-1025/MFJ-1026 noise canceling signal enhancer. Download PDF file
• An ultimatic adapter for iambic keyers or Download PDF file
• 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