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The Quarter-wave stub
A quarter wave length of a transmission line can also be used as an impedance transformer
post 05 Dec 2024
Antenna Calculator Links →
Impedance Calculators
These calculators are used by Mantaro engineers and provided freely for your use
J-pole antenna design calculator
For 2 meters, the coil is 4 turns of coax at 5 inches in diameter
J Pole Antenna dimension calculator
The J Pole antenna is a simplified version of the Slim Jim antenna, using the same matching stub principle
Log periodic dipol array
Detail of the end-fed feed of a VHF log periodic dipole array
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These calculators are used by Mantaro engineers and provided freely for your use
For 2 meters, the coil is 4 turns of coax at 5 inches in diameter
The J Pole antenna is a simplified version of the Slim Jim antenna, using the same matching stub principle
Detail of the end-fed feed of a VHF log periodic dipole array
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
Conrad Electronic Electronic components online shop in German and Italian