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Antenna Trap Design


Enter desired frequency MHz, Results inductance L (uH) Capacitance C (pF)
post 29 Apr 2024
Antenna Trap Design

Antenna Calculator Links

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PHGR Calculator Power, Height, Gain and Beacon Rate
Online calculator will produce the text required to be put in your beacon string to display to others your PHGR

Quadrifilar helicoidal antenna Javascript on-line calculator
Design frequency MHz,Number of turns twist,Length of one turn,wavelengths,Bending radius

RF Toroid Inductors
Specs for T200-2 RF Toroids

RF Tools calculator
Enter the frequency of operation and the balanced and unbalanced Z0.Values for L and C will be calculated


Linear-loaded-short-dipole-21mhz

Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band

Rx antennas 4Square Rx Vertical Array

Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m

Atu balanced feeder antenna system

Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR