40m vertical antenna
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Antennas : 40M- Helically wound antenna for 40m
- A helically wound vertical antenna experiment. 14 meter of wire wounded on a 8 meter fishing pole with 4 elevated radials
[ Hits: 538 | Votes: 2 | Rating: 9 ]
- 40m Wire Antennas Comparison
- On the field comparison among C-Pole antenna, an EFHW vertical antenna and an Inverter V dipole antenna. Test is done using two identical WSPRLite beacons that transmit with 200mW on the WSPR frequency and analyzing spotted results.
[ Hits: 170 | Votes: 1 | Rating: 3 ]
- Delta Loop DX Antenna for 40 meters band
- A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
[ Hits: 431 | Votes: 3 | Rating: 6.33 ]
- Building a 40m Delta Loop Antenna
- An experimento of a 40 meter delta loop antenna both in horizontal and vertical polarization and several elevation angles with interesting notes about the effect of the radial field under the antenna.
[ Hits: 290 | Votes: 4 | Rating: 8.25 ]
- 40m Vertical End-Fed Antenna
- A quarter wave vertical end-fed antenna for the 40 meters band. As all vertical antennas, also this aerial requires a good earthing system. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into.
[ Hits: 2688 | Votes: 7 | Rating: 5.43 ]
- Vertical bazooka antenna for the 40m
new
- A quarter wave vertical omni-directional antenna for 7 MHz. Formulas for dimensions in feet and meters are provided. Ideal radial angle is between 35° and 45°. Velocity factor (Vf) varies based on coax type.
[ Hits: 129 | Votes: 7 | Rating: 6.85 ]
- Portable Vertical Antenna for 40 and 75
- Portable Vertical Antenna for 75m and 40m featuring Low radiation angle for DX, easy to install and to match 50 ohms
[ Hits: 3930 | Votes: 7 | Rating: 7.14 ]
- Phased Vertical Antennas for 40m
- Phased wire vertical antennas for 40 meters band
[ Hits: 1009 | Votes: 2 | Rating: 7.5 ]
- Multiband portable wire antennas
- Vertical end fed antenna used for portable operations. The antenna will work on 80 with acceptable results, it will work fine on 40m, and it will be a good deal better than a normal 1/4 wave GP on 20, 17, 15 meters.
[ Hits: 186 | Votes: 0 | Rating: 0 ]
- 20m Half-Wave End Fed
updated
- A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
[ Hits: 1841 | Votes: 7 | Rating: 8 ]
- Comparing Mobile whip versus EF HW Vertical
- PH0NO conducted field tests comparing a mobile antenna (DX-UHV) to an end-fed half-wave wire. Results on 20m showed the end-fed wire outperforming the mobile antenna, with a significant difference in signal strength. On 40m, the end-fed wire surpassed the mobile antenna in spots and reach. While the mobile antenna is more practical, the end-fed wire offers superior performance. Further testing is planned.
[ Hits: 81 | Votes: 0 | Rating: 0 ]
- 20m 40m trapped squid pole antenna
- An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it
[ Hits: 3017 | Votes: 5 | Rating: 5.2 ]
- A 40m-10m vertical antenna with elevated radials
- A multiband vertical antenna for HF bands with elevated ground radials slant down at 45 degrees and acting also as guy wires.
[ Hits: 540 | Votes: 1 | Rating: 6 ]
- 40m center loaded vertical antenna
- A 5 metre center loaded vertical for 40m combined with a 4 wire ground plane.
[ Hits: 294 | Votes: 0 | Rating: 0 ]
- 80m-40m Dual-Band Vertical
- A dual band 40-80 vertical antenna on an 18m Spiderbeam Fiberglass Spiderpole, with monoband performance
[ Hits: 159 | Votes: 2 | Rating: 10 ]
- Buddipole vertical on 40m
- A report on working a CQWW SSB on 40m with a vertical buddipole antenna
[ Hits: 613 | Votes: 1 | Rating: 1 ]
- HF2V 80 40m Vertical
- Article on the HF dual band antenna with construction details and how to add 160 meters to the HF2V
[ Hits: 3022 | Votes: 10 | Rating: 7.2 ]
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