Coaxial Traps Grid-dip meter method
A trap is a parallel resonant circuit network that can perform either of two functions in an antenna system, depending on whether the traps are resonant at the operating frequency
post 22 Dec 2021
Coils Traps Antennas Links →
La nobile arte di costruire le trapple Hf
L'operazione di sintonizzazione avviene scostando tra loro, leggermente, le spire dell'induttore
Tuning an LF antenna a variometer is used in series
Tuning an LF antenna can be tricky. An antenna that's much shorter than a quarter wavelength will have a high Q and consequently a narrow bandwidth
Single-layer Coil Inductance and Q
This single-layer coil inductance calculator uses the Lundin's formula [5] for which the maximum relative error is stated to be less than 3 ppm
Air Core Inductor Inductance Calculator
Calculates the inductance of an air core inductor
Antenna Trap Design
Enter desired frequency MHz, Results inductance L uH Capacitance C pF
81
L'operazione di sintonizzazione avviene scostando tra loro, leggermente, le spire dell'induttore
Tuning an LF antenna can be tricky. An antenna that's much shorter than a quarter wavelength will have a high Q and consequently a narrow bandwidth
This single-layer coil inductance calculator uses the Lundin's formula [5] for which the maximum relative error is stated to be less than 3 ppm
Calculates the inductance of an air core inductor
Enter desired frequency MHz, Results inductance L uH Capacitance C pF
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