6 Meter 5/8 Wave Vertical Antenna
- The G3JVL 6 Meter ground plane vertical is a compact antenna that is ideal for portable operations. If needed, it can be disassembled into a very small bundle no longer than the longest element.
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Hex Beam for 6 meters
- This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL
Super J-Pole for 435MHz
- The Super J Pole antenna is a co-linear vertical consisting of a number of half wave length vertical elements separated with half-wave length stubs (Tuning stub) feed with a folded matching stub by vk6ysf
The 3-D Folded Loop Antenna
- This article will introduce you to an antenna author call the 3-Dimensional Folded Loop. This
antenna is the result of his continuing efforts to compact full-size antennas by folding and
bending the elements. A one-wavelength loop that is reduced in height and width by being folded into three dimensions.
Corner reflector antenna
- Do you need a high gain antenna? Have you suffered on picking up interference from unwanted direction? You need a directional antenna but a 12 element Yagi will be too attractive!
3 EL Quad Designer
- This DOS program will figure the wire sizes for a 3element quad and will also give you the distance from the center of the boom to drill your holes for mounting the wire on the spider. it also gives you the length of the 4 quarter wave lengths of wire in case you would like to figure the spreader drill points yourself.
- Filter design software. A program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values.
SVCfilter is 32-bit Windows electrical filter design software nicely written to help the radio amateur, technician or engineer design and analyze lumped-element lowpass and highpass filters.