"stub" is a tiny C program which calculates the lengths of stub transmission lines for radio applications where a low standing wave ratio over a broader (and/or split) range of frequencies is desired.



  • 2020-07-07: Version 0.4
    • Important bugfix regarding wrong calculations for frequencies above approx. 50 MHz (exact boundary depends on velocity factor) due to non-injectivity of complex exponential function
  • 2020-01-30: Version 0.3
    • Included program version in output
    • Added command line arguments --license and --help
  • 2019-08-17: Version 0.2
    • Important bugfix (wrong calculation of lossy cables has been fixed)
    • Fixed calculation of SWR when search range is singular
    • Added source code comments
  • 2019-05-26: Initial release of version 0.1