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A dipole modified now 5 bands & no tuner
- Never has there been a more true, tried and tested design for 40/80m than the w3dzz
post 09 Jan 2026
Coils Traps Antennas Links →
Antenna Matching Coil Adjustment Procedure
This article describes a specific procedure to adjust a shunt matching coil to assure that the input SWR will remain relatively low
Construction de Trappes
In search of a software for the hatches: Coaxial-traps. Why also coaxial hatches? I chose this system, because not having 1.5 mm² copper wires to use, I had however a lot of cable 75 ohm coaxial for CCTV
Low-loss wire traps
Wire traps do exhibit a high Q-factor so are in theory less lossy compared to coax traps, but are NOT SUITED for high power 200w
Calculator Inductance of a single layer Air core Coil by KB5RYO
Loading Coil for 136 kHz
Loading coil is one of the most discussed parts of the lf equipment, my loading coil is split into two parts
100
This article describes a specific procedure to adjust a shunt matching coil to assure that the input SWR will remain relatively low
In search of a software for the hatches: Coaxial-traps. Why also coaxial hatches? I chose this system, because not having 1.5 mm² copper wires to use, I had however a lot of cable 75 ohm coaxial for CCTV
Wire traps do exhibit a high Q-factor so are in theory less lossy compared to coax traps, but are NOT SUITED for high power 200w
Loading coil is one of the most discussed parts of the lf equipment, my loading coil is split into two parts
All Spectrum Electronic All Spectrum Electronics Hobby Kits and Electronics Supply
Dxengineering Ham Radio Equipment DX Engineering Ham Radio Equipment & Supplies
BA-Electronics Ba-electronics, a division of products, has added electronic components, test equipment, wire, and supplies to its product offering