Antenna Modeling for Radio Amateurs
- Pacificon 2008 Presentation
by Steve Stearns, K6OIK
New Results on Antenna Impedance Models
and Matching - Pacificon 2007 Presentation
by Steve Stearns, K6OIK
Antenna Impedance
Models Old and New - Pacificon 2004 Presentation
by Steve Stearns, K6OIK
Mysteries of
the Smith Chart - Pacificon '99, '00, '01 Presentation
by Steve Stearns, K6OIK
HF Digital Keyboard Modes - FARS April, 2001, 2007
by Mikel Lechner, KN6QI
Software
de
K6OIK
General circuit analysis and design
Ansoft Designer SV,
free download
RFSim99, or
alternatively, HyDesign Ltd., free download
OrCAD,
demo version, free download
LTspice Linear Technology, free download
Filters (lumped element ladders)
Elsie,
Jim Tonne, WB6BLD, free student edition
Inductors
NBS
coil design, Stephen Moshier, free download
Transmission lines, match networks, and tuners
Times
Microwave calculators, 2 models, free download
TX-Line,
Applied Wave Research, free download
TLDetails,
Dan Maguire, AC6LA, free download
T-Network Tuner,
(also here)
Kevin Schmidt, W9CF, free download
XLZIZL,
Dan Maguire, AC6LA, free download
Miscellaneous routines
AppCAD,
Agilent, free download
HamCalc,
George Murphy, VE3ERP, free download
Antennas
EZNEC, Roy Lewallen, W7EL, $89
EZNEC demo version, free download
Unofficial NEC Archives, Miscellaneous free NEC programs
FEKO Lite, free download
NEC-Win Plus, Nittany Scientific, $150
MultiNEC, Dan Maguire, AC6LA, $39 with limited free trial
WIPL-D Demo program (free download)
WIPL-D Lite program $399 from Artech House
HF propagation
ACE-HF Pro
Ham CAP, DX Atlas, and IonoProbe, Alex Shovkoplyas, VE3NEA; Ham CAP is free download
VOACAP, NTIA-ITS, US government, free download
VOAProp, Julian Moss, G4ILO, free download
W6ELProp, Sheldon Shallon, W6EL, free download
WinCAP Wizard, Jim Tabor, KU5S, $50
Morse Code Practice
Koch CW Trainer, Ray Goff, G4FON, free download
Morse Practice (Java JAR file), Martin Minow, K6MAM, free download (alternate site)
NZART Morse Trainer, Gary E.J. Bold ZL1AN and Sze M. Tan.
Morse Runner, Alex Shovkoplyas, VE3NEA, free download
W1AW code practice (MP3 files), ARRL, free download