40m antenna

40m antenna

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• 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: 539 | Votes: 2 | Rating: 9 ]
• A comparison of 40 meter beam antennas - This page describes a comparison study on seven different beam antennas for 40 meters band. Yagi antennas, moxon antennas, mini horse all antennas are described with schema diagram , azimuth plot and SWR F/B Gain diagram
  [ Hits: 267 | Votes: 0 | Rating: 0 ]
• Hairpin antenna for 40m band - A modified Hairpin antenna for a wider bandwidth an mounted on a grounded metalic mast
  [ Hits: 327 | Votes: 0 | Rating: 0 ]

• 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: 433 | Votes: 3 | Rating: 6.33 ]

• Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
  [ Hits: 162 | Votes: 0 | Rating: 0 ]
• 40m loaded dipole - This is an short dipole for 7 MHz. Total length of this dipole is just 10 meters, 33 feet. Missing lenght is balanced by a coil made of 49 turns of a 40mm diameter pvc pipe. The use of a choke balun is recommended, as always, to adapt the unbalanced coax cable to the balanced antenna, and to prevent RF feed back along the coax shield.
  [ Hits: 194 | Votes: 4 | Rating: 8.75 ]

• 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: 2692 | Votes: 7 | Rating: 5.43 ]

• Bazooka Antenne - A bazooka antenna design in German with dimensions for 20m and 40m band with RG174 coax cable stronger than the common RG58
  [ Hits: 1270 | Votes: 3 | Rating: 4.67 ]

• Trapped Dipole Antenna for 20-30-40m - An 20 30 40 meters trapped dipole antenna plan for sota and portable operations.
  [ Hits: 267 | Votes: 1 | Rating: 10 ]
• 80m-40m Loaded Dipole - A dual band dipole antenna for 40 and 80 meters band. Total lenght of 26 meters, foreseen two coils at aprox 11 meters distance from center feed.
  [ Hits: 254 | Votes: 4 | Rating: 5 ]

• End Fed Antenna with a 1:64 Matching Network - In this experiment the autor is going to explore the use of a 1:64 matching network on the End Fed Long Wire Antenna. Experiment will consist in build a 80-40-20-15-10 meter End Fed Long Wire Antenna with a 1:64 matching network from the documentation available on the internet
  [ Hits: 872 | Votes: 15 | Rating: 6.73 ]
• Speaker Wire EFHW Antennas 20m/ 40m - Author experiments end fed half wave antennas using common two conductore speaker wire, this article features a couple of end-fed halfwave wires for the 40M and 20M bands.
  [ Hits: 262 | Votes: 1 | Rating: 9 ]

• Compact fan dipole for 40 30 and 20 meters band - An homemade fan dipole antenna for 20 30 40 meter bands, setup in a 15 meter wide garden. The longest leg for 40 meter is folded to fit in the 7.5 m
  [ Hits: 1138 | Votes: 0 | Rating: 0 ]
• Half Wave Fan Dipole Antenna - Amateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list, pictures and drawing. Includes the option to expand the antenna to cover the 80 meters band
  [ Hits: 682 | Votes: 1 | Rating: 1 ]

• Simple J-Pole for the 2m band - A very essential j-pole antenna for 144 MHz. To adjust the SWR you will have to play with the 40mm distance between the coax feed and the braid inner conductor connection
  [ Hits: 174 | Votes: 0 | Rating: 0 ]

• Moxon Antenna for 7 MHz - Homemade moxon antenna for the 40 meter band. This article is not very descriptive but includes some very detailed images
  [ Hits: 725 | Votes: 7 | Rating: 5.85 ]

• Portable NVIS Loop for 80m to 40m - A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas.
  [ Hits: 366 | Votes: 0 | Rating: 0 ]

• 40M Delta Flag - A delta loop receiving antenna for the 40 meters band
  [ Hits: 82 | Votes: 1 | Rating: 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: 547 | Votes: 1 | Rating: 6 ]

• WebSDR Wismar  ^updated - This WebSDR is located in Wismar in the north of Germany JO53RV and operated by Frank Goehling DO7AX. There are four RTL2823U USB dongles with three Ham It UP up-converters for 80m/40m/20m and a RTL2832U for the 2m Band. The Antenna for 80/40/20m is a 84 meters Delta Loop.
  [ Hits: 456 | Votes: 5 | Rating: 10 ]

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