df antenna

331 links

Monster Quads - N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15 meters.
[ Hits: 6374 | Votes: 0 | Rating: 0 ]

160-meters antenna problems and solutions - Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file
[ Hits: 3517 | Votes: 6 | Rating: 9.3 ]
Single support gain antennas for 80-160 meters - On 80 and 160 meters an antenna with modest gain and good front-to-back (F/B) ratio, along with a steerable pattern, can be very effective for contesting.
[ Hits: 3403 | Votes: 0 | Rating: 0 ]

Endfed 20/30 Mtr Antenna - Article with detailed pictures of an endfeed antennna for 20 and 30 meter band
[ Hits: 11350 | Votes: 4 | Rating: 4.75 ]

A 40 meters DDRR Antenna - A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article.
[ Hits: 3403 | Votes: 8 | Rating: 3.37 ]

40-80 Dipole antenna - A 40 80 dipole antenna design by WA6ESC PDF File
[ Hits: 2653 | Votes: 3 | Rating: 5.33 ]
A wideband 80 meter dipole - This worthy antenna is so simple and inexpensive you will want more than one by N6LF
[ Hits: 24560 | Votes: 13 | Rating: 6.46 ]
Using the half-square antenna for low bands - Can’t put up a really high horizontal antenna for 80-meter DXing? Maybe the vertically polarized Half-Square might be the antenna for you.
[ Hits: 3210 | Votes: 3 | Rating: 6.33 ]
Broadbanding the half-square on 80 meters - N6LF discusses a simple way to broadband the classic half-square antenna to operate in both the CW and SSB DX windows on 80/75 meters.
[ Hits: 2284 | Votes: 2 | Rating: 4.5 ]

Bruce arrays for 80 and 160m - Antennas with gain and bandwidth for 80 and 160 meters band. Simple wire antenna capable of considerable gain
[ Hits: 9007 | Votes: 3 | Rating: 9.33 ]

An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.
[ Hits: 18765 | Votes: 10 | Rating: 6.53 ]

Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
[ Hits: 1921 | Votes: 2 | Rating: 10 ]

Antenna Gain Comparison System - This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO
[ Hits: 2212 | Votes: 12 | Rating: 5.58 ]

The K9AY Terminated Loop - A compact directional receiving antenna
[ Hits: 2465 | Votes: 5 | Rating: 6.6 ]
How to build the K9AY loop - This PDF document provided by AT technologies explains how to build the K9AY loop receiving antenna.
[ Hits: 8858 | Votes: 7 | Rating: 5.71 ]

Ultimate Portable HF Vertical Antenna - A light and compact antenna that is easy to build, and easy to find parts for. Band coverage is 60 through 10 meters.
[ Hits: 4371 | Votes: 3 | Rating: 8.67 ]

Optimizing half-wave sloper arrays for 160 meters - This article presents a 160-meter variation of this family of antennas and, more importantly, a discussion of the details of how to get such a beast working really well.
[ Hits: 5238 | Votes: 2 | Rating: 7 ]

Getting the most from your tuner - Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap
[ Hits: 2826 | Votes: 3 | Rating: 6.33 ]

Short radials for ground-plane antennas - Think your elevated radials always have to be full size? N6LF lets you in on some great ideas to lessen the “wingspan” of radials, especially near the beach.
[ Hits: 2346 | Votes: 1 | Rating: 8 ]

The ZS6BKW Multiband HF Antenna - Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands It's only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead
[ Hits: 6516 | Votes: 8 | Rating: 6.88 ]