tri pole
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Antennas : 20M : 20 meter Dipole Antennas- Vertical Dipole Antenna for 14 MHz by G3PND
- An home made vertical dipole antenna made with simple material. The antenna has a total length of aproximately 16 feet. In this article appeared on June QST 2019, the author explain how he reached the optimal confirugation changing and adjusting the lower part of the antenna, trimming and spacing correctly the copper wire. PDF File to downloas
[ Hits: 1223 | Votes: 3 | Rating: 4 ]
- Dipole Calculator
- Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported.
[ Hits: 944 | Votes: 11 | Rating: 6 ]
- Quick antenna length calculator
- An excel spreadsheet that in a really simple way checks how much to trim your antenna elements. Download the xls file and watch the presentation video include in this page
[ Hits: 771 | Votes: 0 | Rating: 0 ]
- DG0KW Multiband dipole
- German article on the multiband dipole by DG0KW. This antenna can be configured for several bands and can work in 3 or 4 bands mode. Can be used in restricted space lots.
[ Hits: 2884 | Votes: 7 | Rating: 4.71 ]
- Long Wire Dipole Antenna
- An basic horizontal half-wave antenna which can be made of ordinary copper wire. The cable should have a cross section of 1 mm 2 or more. The antenna can be stretched between two masts, a house and a mast, or between two apartment buildings.
[ Hits: 972 | Votes: 6 | Rating: 5.5 ]
- Folded Dipole
- A trifilar folded dipole antenna for 80 meters band
[ Hits: 1659 | Votes: 7 | Rating: 5.72 ]
- 10 15 20m Open Sleeve Dipole
- Based on a simple project based on a 2 elements Yagi for 20m band, and then becomed a triband yagi with a open-sleeve feed system
[ Hits: 785 | Votes: 3 | Rating: 3 ]
- The Short Dipole
- There are several ways to reduce the length of a dipole and still use it as an effective antenna. Remember it is the electrical length that determines resonance. The physical length can be considerably less than a half wave length on your desired frequency as determined by 468/f MHz.
[ Hits: 203 | Votes: 0 | Rating: 0 ]
- Short Monoband Dipole Antennas - KGD Antennas
- The KGD antenna is an option for those with space restrictions. The idea behing this project is to provide a short dipole antenna for HF Bands and to allow operations on HF bands when its not possible to setup large antennas, using these short base loaded dipoles.
[ Hits: 240 | Votes: 0 | Rating: 0 ]
- Adjusting HF Antenna Lengths
- Find out how much to adjust the length of a quarter wave whip or a half wave dipole rather than the outright cut-and-try method.
[ Hits: 861 | Votes: 4 | Rating: 5.75 ]
- Tri-Band J-Pole
- This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands
[ Hits: 1922 | Votes: 5 | Rating: 9 ]
- OCF Dipoles
- About windom antennas and OCF dipoles, tricks on covering more bands moving feed-points and potential problems. Problems caused by common mode currents in OCF dipoles
[ Hits: 670 | Votes: 0 | Rating: 0 ]
- Asymmetrical Hatted Vertical Dipole
- Theory and origins of W4RNL Asymmetrical Hatted Vertical Dipole AHVD for portable operations.
[ Hits: 746 | Votes: 0 | Rating: 0 ]
- HF Flagpole Antenna
- Living in a no antenna deed restricted community sounds bad for a HAM, but it means you just need to be more creative. I have found this will not stop your DXCC activities and many of my local HAM club members will agree
[ Hits: 377 | Votes: 2 | Rating: 8 ]
- The C-Pole Antenna
- C-Poles for 20m and 6m, it is a folded half-wave dipole with an asymmetrical tapped 50-Ohm-point in the lower part of the antenna. Design hints by DK7ZB
[ Hits: 933 | Votes: 47 | Rating: 8.3 ]
- The W3EDP Antenna
- A wire antenna feeded with an unsymmetrical feed and a 1:4 balun can be tuned from 6 to 80 meters band but can be noisier than a dipole and cause RF in the shack
[ Hits: 797 | Votes: 2 | Rating: 10 ]
- WEB SDR - ROME
- Listen to the online web sdr in Rome Italy. A kiwisdr project using a vertical antenna and dipoles for HF bands.
[ Hits: 650 | Votes: 4 | Rating: 8.75 ]
- MALtronix
- Maltronix, HF antennas, dipoles and verticals, switching power supply, power distribution, antenna switch
[ Hits: 741 | Votes: 1 | Rating: 10 ]
- Custom pigtail cable with Anderson PowerPole connector
- In this post, we describe how to make a pigtail cable to connect the Kenwood TH-F6A triband HT to a 12Vdc power source via an Anderson PowerPole connector.
[ Hits: 121 | Votes: 0 | Rating: 0 ]
- Locating Power Line Noise
- RF interference from power lines is caused by arcing as high voltage electricity bridges a gap to a lower ground potential on the power pole. Corroded or loose connections, cracked insulators almost all of the hardware on a power pole can be the source of arcing.
[ Hits: 427 | Votes: 0 | Rating: 0 ]
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