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40 & 80 meter trap dipole long 23m
Coil, 78 turn of insulated copper Wire - no spaced, AWG #18 - equivalent to 1mm diameter or 0,8 mmq, wound on plastic support 50mm diameter,Coil drawing
post 31 Mar 2024
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Costruire tappole per hf
Con questo articolo vorrei descrivere la sequenza delle operazioni che solitamente svolgo quando costruisco le trappole per le bande HF
Come misurare le trappole con l'analizzatore d'antenna
Studiare un sistema accoppiato d'antenne mi sono imbattuto nell'arcinoto modo di tagliare un coassiale esattamente lambda/4
Cushcraft Trap Coaxial Capacitor Repair
There are occasions that the coaxial capacitor on Cushcraft trap R5, R7, etc. fail due to a breakdown of the insulator between the outer aluminum tubing and the inner capacitor rod
Goedkoop op 80/40 en 20/10 meter met tuner
The wire used is an enamelled copper wire with a diameter of 1.9 mm and a length of 3 meters, often used in transformers
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Con questo articolo vorrei descrivere la sequenza delle operazioni che solitamente svolgo quando costruisco le trappole per le bande HF
Studiare un sistema accoppiato d'antenne mi sono imbattuto nell'arcinoto modo di tagliare un coassiale esattamente lambda/4
There are occasions that the coaxial capacitor on Cushcraft trap R5, R7, etc. fail due to a breakdown of the insulator between the outer aluminum tubing and the inner capacitor rod
The wire used is an enamelled copper wire with a diameter of 1.9 mm and a length of 3 meters, often used in transformers
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
Build a Three-Way Antenna Switch and Displa To use a wireless relay to select one of two high current capacity power relays
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening factor