A moxon beam antenna for 10 meters band
Category: Homebrew
A 3 Element Mono-band Yagi for 20 Meters
By Kees Wiegers, PA5CW (ex-PA3BHS) It looked impossible to get a large beam for 20 meters up a tower, but it was something I always wanted. So after attending a presentation by John Devoldere, ON4UN, of Merelbeke, Belgium, I decided to try and build my own beam. At the presentation, John demonstrated software for designing…
Six Meter Yagi Antenna
A four element Yagi Antenna for 50 MHz band. The reflector and the director elements can be mounted directly to the metallic boom, while the Driven element must be insulated from the boom. The driven element is basically a simple folded dipole and foreseen a 4:1 balun. Usage of a folded dipole as driven element…
Compact 20m Yagi
Article by M0DGQ This yagi antenna is particularly suitable for those with small plots ( myself included ) who wish to use a 2 element 20m yagi. The design is by AB4GX, the original article is listed below ( PDF ). Here different materials have been used for construction as these are easy to obtain…
70cm Quadruple Quad
Quadruple Quad by Richard Price BSc. MSc. GW0VMW A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth. This is important as operating from a hilltop on a relatively under used band requires as broad a catchment…
1:4 Current Balun
Article by N5ESE Here’s yet another handy little Altoids QRP project. This makes a great travel companion to the 1:1 current balun and is intended to aid in tuning a balanced antenna or feedline that has a high impedance (100-600 ohms). I’ve even used it successfully to tune a 20 meter, 1/2-wave vertical with 4…
1:1 Current Balun
Article by N5ESE Here’s another handy little Altoids QRP project. For Field Day 2002, I wanted to use my new Elecraft K1 (which has an automatic antenna tuner built-in) to feed a full-wave loop on 40 meters, to use on all bands 40 – 15. To preserve the feedline balance (I used 300-ohm ladder line),…
N5ESE’s 87 ft Inverted L Portable Antenna?
Here’s one of my favorite antennas for QRP portable operation. It provides easy setup in the field, is extremely compact, and provides excellent performance on all bands 80 thru 15 Meters. It’s a non-resonant antenna, but don’t think for a minute that you lose anything from that. Using a field-radial system as shown, the feedpoint…
N5ESE’s Shielded-Loop Receiving Antenna
Loop receiving antenna
I5MZY 13 Element Yagi for 2 Meters Band
A homebrew 13 elements yagi antenna for 144 MHz by I5MZY