df antenna
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Antennas : 160M- The Cobra Antenna
- A folded wire antenna for 160 meters as appeared on 73 amateur radio magazine june 1997
[ Hits: 2134 | Votes: 4 | Rating: 5.75 ]
- High Performance 40 Meters Vertical
- 40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials,
made from surplus military camouflage poles
[ Hits: 2228 | Votes: 2 | Rating: 8.5 ]
- 3 Element Yagi Antenna Plan for 6 meter
- A short boom, wideband 3 element yagi antenna plan for six meters that cover the entire band with a resonable performance and a 50 Ohm SWR of less 2:1. Article appeared in QST August 2007
[ Hits: 1291 | Votes: 0 | Rating: 0 ]
- Homebrewing a 6 Meter Yagi
- In this PDF article Zack Lau describe how to homebrew a four element yagi beam antenna for 50 MHz band, including how to build mounting blocks and tubing clamps to hold elements.
[ Hits: 961 | Votes: 2 | Rating: 5.5 ]
- Multiband end fed antennas
- This is a 200 Watt PEP step up transformer for end fed full and half wave antennas without radials, designed as a 200 Watt PEP
[ Hits: 2273 | Votes: 9 | Rating: 7.32 ]
- Shortened EFHW Antenna 80-10m
- A shortened multiband antenna, about 23m long, for 80m - 10m bands with a low SWR (<1.3) on 80m and 40m, and <3 till 10m. Bandwith on 80m is 300kHz
[ Hits: 4116 | Votes: 10 | Rating: 6 ]
- 80M 4-Square
- An antenna project to obtain a bigger signal on the
80 Meter (3.5 to 3.8 MHz) amateur radio band
[ Hits: 836 | Votes: 0 | Rating: 0 ]
- Double Size G5RV
updated
- Building the double size G5RV antenna, part list, assembly part, dimensions and assembly instruction in a pdf document
[ Hits: 1031 | Votes: 1 | Rating: 9 ]
- ZS6BKW vs G5RV
- An exaustive comparison of the two antenna models including antenna Patterns/SWR at 40 ft center height, 27 ft end height ~148 Degree Included Angle
[ Hits: 1398 | Votes: 4 | Rating: 7 ]
- Magnetic Loop Antennas
- A presentation about magnetic loop antennas, includes components, differences among small loop and resonant loops, advantages and electrical characteristicsof mag loop antennas
[ Hits: 992 | Votes: 1 | Rating: 10 ]
- The Midnight Loop
updated
- An Experimental, High-efficiency, Graphic-Tunable Magnetic Loop antenna and loop controller in a 52 pages PDF presentation with drawings and pictures
[ Hits: 1174 | Votes: 2 | Rating: 8.5 ]
- Antennas for portable operations
- Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
[ Hits: 500 | Votes: 0 | Rating: 0 ]
- QRP Z-Match Tuner 40-10m
- The Z Match is really a basic L Match consisting of a series capcitor and variable shunt inductor, coupled to the antenna using the RF transformer action.
[ Hits: 1799 | Votes: 0 | Rating: 0 ]
- VHF UHF Coaxial Dipole Antenna
- A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive
[ Hits: 2922 | Votes: 15 | Rating: 5.55 ]
- A 146- and 445-MHz J-Pole Antenna
- Pipe your signals to 146 and 445 MHz with one antenna!
[ Hits: 1527 | Votes: 3 | Rating: 8 ]
- Radials on Vertical Antennas
- Experimental Determination of Ground System Performance for HF Verticals
[ Hits: 1396 | Votes: 9 | Rating: 6.67 ]
- Safari - Inverted V antenna
- A dual band portable inverted V antenna for 80 and 40 meters band with dimensions for other bands and several assembling instruction
[ Hits: 619 | Votes: 1 | Rating: 5 ]
- TW4040 Manual
- PDF manual of the TW4040 The Adventurer MonobanderTM
TransWorld Antennas
[ Hits: 629 | Votes: 0 | Rating: 0 ]
- TW2010L Manual
- TW2010L The Adventurer Lite TransWorld Antennas
instruction manual PDF file
[ Hits: 461 | Votes: 2 | Rating: 5 ]
- PL259 Surge Arrestor
- Limiting static surges on dipoles, verticals or end fed antennas
[ Hits: 900 | Votes: 0 | Rating: 0 ]
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