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The ZS6BKW Multiband HF Antenna
This is the antenna for you guys who want to get on HF effectively, and haven’t too much space or cash to throw around. Actually, it’s a design from ZS6BKW (aka G0GSF), similar to the G5RV, but it...
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5/8 Collinear antenna
I was trying to increase the overall performance of the J-pole, in this design. The diagram provided is a more simplified version of the one I did. These are a few of the modifications I came up...
View ArticleNotes on Cubic Quads
Cubic Quads KQ6RH (C) 1998, 1999, 2000 Ray Jurgens (Up-Dated 2/25/2000)  Cubic Quads  The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well...
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6 Meter Halo Antenna Design
This halo antenna by KB1DIGÂ is made with a true Gamma Section this time and is fashioned from aluminum. Most of the parts are leftovers from old car projects. The best part is it’s omnidirectional!...
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40m 3 element Yagi
Dimensions of the 3 element Yagi antenna for 7 MHz 15m 7050KHz 20.59m 21.80m 19.18m 20m 7050KHz 20.68m 22.15m 19.38m 25m 7050KHz 20.82m 22.70m 19.49m 30m 7050KHz 20.85m 22.80m 19.60m The post 40m 3...
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Ultra-portable 5ele 144MHz Pocket Portable Yagi
Please feel free to build or distribute the information on these antennas. G4DHF retain the copyright to the designs and ask that they are not manufactured for commercial gain. Introduction This is a...
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Rotatable Dipoles
There are quite a few ways to make full-sized dipoles that can be rotated. How you attack this mostly depends upon what band is to be covered (basically how big) and whether the wire is to be...
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Discone Antenna for RTL SDR
I have been getting into software defined radio via RTLSDR and found the stock antennas woeful for reception and picked up a tonne of noise from my LCD and laptop – though it’s hardly surprising. So...
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Cubical Quad Design
The frequency scaling formulas for Cubical Quad antennas are shown in this picture. Note that frequency is measured in Megahertz {MHz} and the total length of each element is measured in feet {ft}. The...
View Article160 Meter linear loaded Tee vertical doublet antenna
I decided to publish this website in order to pass on some insights about this antenna that I’ve garnered through extensive experimentation. A warning though, some of the combined design aspects of the...
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Buddipole vs Wire Dipole on 20m
Buddipole vs Dipole Today during our Club annual “Filetto Day” , a parody event of the famous ARRL Field Day, I’ve been able to compare my Buddipole Antenna, with a home made 20-40 Wire Dipole...
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Double Bazooka Antenna
The Double Bazooka Antenna is simple to build broadband dipole antenna Someone consider the double bazooka antenna to offer a 3dB improvement over a common dipole antenna. The only caveat is that an...
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50 MHz 4 and 7 elements Yagi Drawings
Just found this two old antenna drawings for a four and a seven elements yagi antenna by WB7PMP. Looks interesting plans but have not yet attempted to build them. The post 50 MHz 4 and 7 elements Yagi...
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Vertical antenna for ham radio 40 meter band
PY1BEK Vertical antenna for ham radio – 40-meter ham band (7 MHz) This self-supported vertical antenna was made with aluminum tubes of 3 m in length that have an external diameter of 32 mm and a wall...
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Comet CHA250B Review
While evaluating HF multiband vertical antenna I found this interesting review about the CHA250B by Comet. I saved for further reference, author is K3DAV whose site is gone qrt. Comet CHA250B HF...
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HF antennas for high rise dwellers
If you have ever tried transmitting on HF from a tall block of apartments, where it’s just not possible to erect a substantial aerial system, then this article is for YOU! If you have never had to...
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An effective 3 Band Wire DX Antenna
First, please excuse my artistic abilities. The diagrams are basic but show the rudiments of this excellent aerial, which is ideal for the newcomer to HF and those on a small budget as well as those...
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Magnetic Loops by W2BRI
Article by W2BRI After many requests by Ben W4KSY*, someone I consider to be my loop mentor, I decided to post a page about my 80 meter magnetic loop. The idea for this loop began with my purchase of a...
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Antenna Performance : co-phasing
Co-Phasing Co-phasing or “stacking” has long been a way to get high gain from antennas. Co-phasing involves placing two (or more!) identical antennas either side-by-side or one over top another...
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Antenna Performance : Angle of Radiation
Angle of Radiation Most of us think that our antenna’s “shoot” the signal straight off the end (if its a beam), at right angles from the antenna. I have even seen some operators (mainly ones who live...
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