u dipole

528 links - and 1 categories

10 meter DiPole - 10 Meter Easy to build wire dipole antenna
[ Hits: 1560 | Votes: 5 | Rating: 9.8 ]

Antennas for 160m - The best results work when you have an antenna with a large vertical component. It is difficult to get a horizontal antenna (dipole) high enough to be an effective antenna on 160. However, there are several easy things you can do with your present antenna to initially get on the best amateur radio band
[ Hits: 1124 | Votes: 0 | Rating: 0 ]

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: 554 | 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: 1079 | 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 ]

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: 710 | 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: 1020 | 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: 1508 | 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 ]

Overview on some SOTA portable antennas - A review of some portable antennas for SOTA operations, including linked dipoles, end-fed, verticals
[ Hits: 686 | Votes: 1 | Rating: 4 ]
Portable link dipole - A lightweight inverted vee antenna that can be supported by a 10 metre long fiberglass squid pole. The antenna is designed to cover 10, 15, 20, 40 and 80 m bands.
[ Hits: 1682 | Votes: 4 | Rating: 6 ]
Portable lightweight link dipole - A multi band portable link dipole antenna for 20 30 and 40 meters band
[ Hits: 849 | Votes: 0 | Rating: 0 ]

Why does ice on a wire dipole affect the SWR? - Effects of ice an snow in a wire dipole antennas
[ Hits: 337 | Votes: 1 | Rating: 1 ]

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: 957 | 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: 2931 | Votes: 15 | Rating: 5.55 ]

Basic Wire Antennas Part I - A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
[ Hits: 1653 | Votes: 0 | Rating: 0 ]

Buddipole vertical on 40m - A report on working a CQWW SSB on 40m with a vertical buddipole antenna
[ Hits: 614 | Votes: 1 | Rating: 1 ]
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 ]