- By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculation
Attenuators. Audio Filter design.Coil Winding.
Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps
QRA Locator to Latitude/Longitude (and back)
Radio Horizon calculator Resonance Satellite orbit calculator Timer calculation
s (555 timer)Zener Diode calculation
XLZIZL by AC6LA
- XLZIZL is an Excel application that analyzes the components of an antenna feed
system, including transmission line
s, stubs, baluns, and tuners. Calculation
s include impedance transforms, SWR and reflection coefficient, power loss, voltage and current standing waves, stress on tuner components, network attenuation (S21), and return loss Analysis results are available in worksheet format and in five different chart formats, including Smith charts.