ZS1ZZ · Antenna Tools

Antenna Trap Calculator

Full calculation of resonant frequency, inductance, capacitance, wire length and Q factor for LC traps and coaxial cable traps. Download results as PDF.

LC Trap — Parameters
What do you want to find?
Coil dimensions
mm
mm
T
Not needed when finding turns
mm
Leave blank — auto = turns × wire dia
Capacitor value
pF
Target / known frequency
MHz
Please fill in all required fields with valid positive values.
Results — LC Trap
Wire & construction data
Formulae used