v dipol
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Antennas : 4M- A centre-fed co-axial dipole for 4-m
- This design has the following advantages low-cost components, Easy to set-up - nothing to adjust, no metalwork required, and only four soldered joints!
[ Hits: 551 | Votes: 1 | Rating: 10 ]
- Amateur Dipole Antenna Calculator
- This calculator is designed to give the horizontal length of a particular dipole including Tees, antenna, or one side of it, for the frequency chosen. Enter the desired frequency and select the desired calculation from the drop box
[ Hits: 1078 | Votes: 9 | Rating: 7.45 ]
- Antenna Theory : Baluns
- This article describe the principles of baluns when referred to devices used to balance unbalanced systems, like a coax cable and a dipole antenna
[ Hits: 706 | Votes: 2 | Rating: 9 ]
- When and Where to Use Baluns
- Baluns are usually used by Hams to feed dipole antennas with 50 ohm coax and to transpose from ladder line feeding a multi-band antenna to the unbalanced input of an antenna tuner.
[ Hits: 1518 | Votes: 9 | Rating: 7 ]
- Bent Dipoles reference website
- Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve.
Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.
[ Hits: 707 | Votes: 0 | Rating: 0 ]
- A 10-6-4 three band dipole antenna
- A home made dipole antenna for 10m, 6m, 4m bands made with two sections of 450 and 300 Ohm ladder lines, cut to achieve acceptable SWRs on all bands
[ Hits: 1016 | Votes: 5 | Rating: 8.2 ]
- QRO No-Tuner Multiband Dipole
- Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
[ Hits: 1502 | Votes: 2 | Rating: 4.5 ]
- A simple 20-40 dipole
- A simple to build full length 20/40 dipole antenna to be used in inverted vee configuration
[ Hits: 992 | Votes: 3 | Rating: 5.67 ]
- A lightweight dipole for 2 m
- A simple portable antenna for SOTA VHF is described in this article dedicated to portable operations
[ Hits: 497 | Votes: 0 | Rating: 0 ]
- A Lightweight Link Dipole
- Homebrewing a Lightweight linked dipole HF antenna for portable SOTA operations
[ Hits: 445 | Votes: 0 | Rating: 0 ]
- The Gamma Match
- The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
[ Hits: 954 | Votes: 2 | Rating: 4.5 ]
- 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 ]
- VHF / UHF Antenna Design
- A dipole for 2m, 4m, 6m band an hamdwritten note for a homemade vhf antenna that can be tuned across the VHF band
[ Hits: 1690 | Votes: 10 | Rating: 7.08 ]
- Basic Wire Antennas Part I
- A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
[ Hits: 1646 | Votes: 0 | Rating: 0 ]
- W8JK Beam Antenna
- The W8JK is a famous and effective DX antenna, first built by John Kraus, W8JK, in 1937. A Beam antenna with two parallel dipoles driven with opposite phase, with a close spacing of an eighth of a wavelength.
[ Hits: 5142 | Votes: 21 | Rating: 7.19 ]
- Maxcon Antennas
- Maxcon makes and sells Amateur Radio Antennas. Double extended Zepp antenna, multiband dipoles, bazooka antennas, and VHF Jpole, made in USA
[ Hits: 387 | Votes: 2 | Rating: 4.5 ]
- Buddipole Deluxe Review
- A review of the Buddipole Deluxe Antenna portable HF VHF ham radio antenna
[ Hits: 684 | Votes: 1 | Rating: 4 ]
- Buddipole vs Wire Dipole on 20m
- A comparison of the buddipole antenna versus a wire dipole done on 20 meters band
[ Hits: 750 | Votes: 3 | Rating: 4 ]
- A VHF/UHF Addition For The Buddipole Antenna
- A VHF UHF antenna for the buddipole antenna system
[ Hits: 502 | Votes: 0 | Rating: 0 ]
- PL259 Surge Arrestor
- Limiting static surges on dipoles, verticals or end fed antennas
[ Hits: 900 | Votes: 0 | Rating: 0 ]
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