220 antenna

13 links

TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.
[ Hits: 785 | Votes: 0 | Rating: 0 ]

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: 1861 | Votes: 5 | Rating: 9 ]
3 band J-Pole Antenna - Pictures of a 2 meter, 220, 440 copper J-Pole antennas
[ Hits: 2563 | Votes: 12 | Rating: 6.08 ]
Multiband J-Pole Antenna by IZ0UPS - A multiband J-Pole antenna project that cover 144,220 and 430 MHz. The articles includes several pictures of this multi-band antenna, including handmade schematics and diagrams, project is mainly in Italian
[ Hits: 386 | Votes: 4 | Rating: 7.25 ]

437 MHz Crossed Yagi for Satellite work - Crossed yagi for 437 MHz Satellite antenna, with power divider splitter build.
[ Hits: 5885 | Votes: 22 | Rating: 7.28 ]

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: 2848 | Votes: 15 | Rating: 5.55 ]
Tri-Band VHF/UHF Antenna Design - The TBJ-1 – a triband base antenna was published in March 2017 QST. This antenna covers 2M/220 MHz/70cm in one 6ft 3/4 inch PVC pipe and requires no radials.
[ Hits: 178 | Votes: 0 | Rating: 0 ]

ZS6BKW in Inverted-V format - ZS6BKW antenna design in inverted-v format antenna design at QRZ forums
[ Hits: 2947 | Votes: 1 | Rating: 2 ]

W6LVP Loop Antennas - Magnetic loop receive antennas manufacturer. W6LVP loops cover 2200 through 10 meters (135 kHz through 30 MHz) with no tuning or adjustment.
[ Hits: 142 | Votes: 1 | Rating: 4 ]

The Ventenna - Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.
[ Hits: 4572 | Votes: 19 | Rating: 8.21 ]

HAM IV Rotor restoration - HAM-IV antenna rotor repari and restore
[ Hits: 1091 | Votes: 0 | Rating: 0 ]

137 kHz antenna preamplifier - A simple 137 kHz antenna preamplifier to make your FT-817 (and others) useable on 2200m band.
[ Hits: 1173 | Votes: 3 | Rating: 6.67 ]

Cross Band Repeaters - Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
[ Hits: 203 | Votes: 0 | Rating: 0 ]