antenna short

179 links - and 1 categories

Short Vertical for 160 meters - A top band shortened vertical antenna project. This project includes drawing and MMANA-GAL output screens.
[ Hits: 307 | Votes: 2 | Rating: 9 ]
160m Band Loaded Inverted L Antenna - This is a simple 160 meters antenna, a short loaded inverted L. The linear lenght is 20 meters, with the loading coil at 5 meters from the feedpoint.
[ Hits: 320 | Votes: 1 | Rating: 7 ]

20 meter short loaded vertical antennas - Loading is a way to lower the resonant frequency of an antenna radiator. This technique is typically used in antennas that have radiating elements that are too short for the desired resonance frequency. In this excellent article the author experiment loaded vertical dipoles for 20 meters band
[ Hits: 232 | Votes: 1 | Rating: 9 ]

Short DL6WU yagi for 23cm - 1260 MHz yagi antenna for ATV with a total Bandwidth (3 dB) 1240-1280 MHz and 10 dBd gain
[ Hits: 139 | Votes: 1 | Rating: 4 ]

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 ]

Short vertical for 6 meters - A 30 cm antenna for the six meters band in japanese
[ Hits: 186 | Votes: 1 | Rating: 1 ]

3 Elements Yagi LFA for 50 MHz - A short 3 element LFA Yagi for 50MHz with a 1.94M boom. This antenna has been designed in order to minimise the upward and downward lobes typically seen the the EL plane on Yagi antennas.
[ Hits: 227 | Votes: 2 | Rating: 8 ]

80m Shortened Dipole Antenna - This antenna just requires about 24m of free space instead of 41m that a normal half wave 80m antenna needs to hang up. The so called loaded dipole uses a coil in every dipole arm to electrically lengthen the mechanical too short dipole arms. Every coil has an inductivity of 120 microHenry.
[ Hits: 154 | Votes: 0 | Rating: 0 ]

Loaded Quarter Wave Antenna Inductance Calculator - Here is a formula and calculator for creating a loaded (shortened) quarter wave vertical or balanced dipole. The calculation refers to either a loaded 1/4 wave or a loaded dipole
[ Hits: 163 | Votes: 0 | Rating: 0 ]
Coil-Shortened Vertical Antenna Calculator - You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.
[ Hits: 313 | Votes: 2 | Rating: 5.5 ]

Loading of Short Antennas - An interesting article on loading short vertical monopole antennas, representing six different methods. Base loading, Center Loading, Top Loading, Continuous loading, half and half loading and capacitive top loading.
[ Hits: 686 | Votes: 4 | Rating: 6.25 ]

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: 241 | Votes: 0 | Rating: 0 ]

J-pole antenna Calculator - Online calculator for J-Pole antennas. The J-pole antenna consists of a short and a long vertical pole with a feed point near the bottom. The antenna looks like the letter J, hence the name J-pole antenna.
[ Hits: 417 | Votes: 0 | Rating: 0 ]
Construction of a J-Pole antenna for 2 meter - If you like building good antennas, this one is for you. The J-pole is a slim, omnidirectional, half-wave antenna fed at the end through a quarter-wave shorted transmission line. Its predecessor is the famous Zepp antenna developed for the Zeppelin airship.
[ Hits: 389 | Votes: 2 | Rating: 10 ]

Magnetic Loop HF antenna - An homebrew HF Magnetic loop made with 2m length of 6mm diameter copper pipe formed into a near circle as the low loss inductor, a short length of coax as a capacitor,a short length of mains cable, again as a fixed tuned capacitor, a tunable 365pF air spaced capacitor, and a small Jackson C804 airspaced variable with a small 3-35pF trimmer in parallel
[ Hits: 131 | Votes: 0 | Rating: 0 ]

Homemade 137 MHz Weather Satellive V-dipole Antenna - This is a short version, the final of the article describing how to build the Weather satellite 137 MHz horizontal V-dipole antenna.
[ Hits: 241 | Votes: 5 | Rating: 9.4 ]

Linear Loaded Dipole for 15m and 20m - A small dipole antenna installed inside a balcony. This linear loaded short dipole antenna has been designed at first for the 21 MHz and then adapted for the 20 meters band.
[ Hits: 625 | Votes: 2 | Rating: 4.5 ]

Midway Electronics - Midway Electronics supplies the area with electronic components, wire, cables, amateur radio transceivers, QRP kits, CB transceivers, GMRS radios, Shortwave radios, power supplies, antennas, coax, connector and ham radio accessories
[ Hits: 216 | Votes: 2 | Rating: 3 ]

Free ham radio utilities written in LabVIEW - Free ham radio utilities written in LabVIEW includes Open Wire Calculator, Dipole Peak/Null Angle Calculator, a Coil-Shortened Antenna Calculator ad interesting Round Coil Inductance Calculator and a Skyloop Antenna Calculator
[ Hits: 294 | Votes: 2 | Rating: 5.5 ]

A 3.5MHz Receiver for SSB and CW - Homemade receiver for 80 meters band. The receiver works very well (in fact better than some of its successors), especially the AGC makes listening to 80m QSOs a real pleasure. Sensitivity is not cutting-edge, but on a full-size short-wave antenna it is by fare sensitive enough.
[ Hits: 250 | Votes: 2 | Rating: 6.5 ]