half wave 80m
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- Experiments with 160m antennas
- Experimentin wire antennas on top band using several type of aerials.
This includes a 40 to 160 meters EndFed Half Wave kite antennas and 160m/80m loaded vertical antenna.
[ Hits: 177 | Votes: 0 | Rating: 0 ]
- 40-80 Half-Extended Double Zepp Antenna
- A dual-bander for 80M and 40m. An Extended Double Zepp (EDZ) is a 5/4 wavelength center-fed dipole.
This article will introduce the Half-Extended Double Zepp (HEDZ) which has characteristics that a lot of amateur radio operators should find quite interesting
[ Hits: 11400 | Votes: 9 | Rating: 4.44 ]
- 80M Grounded Half Loop
- The grounded half loop describe in this article is basically a half wave length wire on 80 Meters
[ Hits: 1117 | Votes: 1 | Rating: 1 ]
- 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 ]
- End-Fed Half-Wave Antenna for 20m 40m 80m
- How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m. This Shorty 80m EFHW comprises a 49:1 autotransformer (to match the very high impedance at the end of a half-wave wire), a half-wavelength wire for 40m (also a quarter-wavelength for 80m), a loading coil and a short tail wire. The coil and the short tail wire (about 6 feet) make up the other quarter wave on 80m.
[ Hits: 141 | Votes: 1 | Rating: 4 ]
- Full size 80m End Fed Half Wave Antenna
- The author reflects on expanding their antenna for 80m coverage during lockdown. They extend the End Fed Half Wave (EFHW) using a Spiderbeam pole and "cheating" by dog-legging across their garden. Despite challenges, they achieve coverage for multiple bands with minimal cost. Practical Wireless features EFHW antennas, including a pre-made 20m EFHW extended for 40m.
[ Hits: 94 | Votes: 0 | Rating: 0 ]
- Half Wave Fan Dipole Antenna
- Amateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list, pictures and drawing. Includes the option to expand the antenna to cover the 80 meters band
[ Hits: 682 | Votes: 1 | Rating: 1 ]
- The Weird Antenna Wire End Effect
- A half wave wire that is tuned for resonance on 80m will NOT be resonant on 40m despite a precise harmonic relationship between the two bands. The End Effect is caused by a capacitive coupling between an unterminated wire end and the ground.
[ Hits: 95 | Votes: 0 | Rating: 0 ]
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