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Build a Space-Efficient dipole Antenna for 40, 80, and 160 Meters


Many hams who want to work the low bands need an effective antenna thatfits on a small lot


Build a Space-Efficient dipole Antenna for 40, 80, and 160 Meters



Coils Traps Antennas Links

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Jar Capacitance Calculator For Coils
The purpose of the calculator is to determine the capacitance value of the jar capacitor needed for the circuit's coil

Le mie sloper per 80/160 Lunghe solo MT. 17,50
Ho fatto una trappola per gli 80mt con del filo di 2 mm avvolgendo 40 spire su un diam. di 50 mm

La nobile arte di costruire le trapple hf
La descrizione della costruzione della trappola e' anche lo spunto per divulgare alcune astuzie che molti OM sanno, per esperienza, e che si tramandano verbalmente

Coaxial Traps
The Coax trap program computes design parameters for the construction of coaxial

Linearly-loaded dipole traps 80-40-30m
For tuning of the traps for this project with MFJ antenna analyzer is util a though


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