20 meter

464 links - and 5 categories

2 Element Wire Yagi for 10 meters band - A page with an embedded video about a two elements yagi antenna for 28 MHz based on the original antenna design by VE7CA
[ Hits: 283 | Votes: 1 | Rating: 8 ]
Building the 5-element 10 Meter Yagis - A project for a 5-over-5 stack on 10 meters
[ Hits: 167 | Votes: 1 | Rating: 6 ]
5 element Yagi antenna for 10 meters band - This 10 meter antenna is right out of the ARRL Antenna Book. There are 5 elements on a 24 feet boom and it performs well from 28.0 to 28.9 MHz.
[ Hits: 194 | Votes: 2 | Rating: 6 ]
Two on 10 - A two element beam antenna for ten meters band. This home-brew two-element beam is the perfect introduction to rolling your own gain antenna
[ Hits: 338 | Votes: 2 | Rating: 8 ]

Top Band on a Vertical Yagi - 160 Meters on the 3-element 80 Meter Vertical Yagi antenna
[ Hits: 155 | Votes: 0 | Rating: 0 ]

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 ]

Building a 40m Delta Loop Antenna - An experimento of a 40 meter delta loop antenna both in horizontal and vertical polarization and several elevation angles with interesting notes about the effect of the radial field under the antenna.
[ Hits: 292 | Votes: 4 | Rating: 8.25 ]

Slot-Cube Antenna for 6 Meters - Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019
[ Hits: 580 | Votes: 2 | Rating: 5.5 ]
Six meter Hentenna - An Hentenna project for the six meters band. The standard size of standard hentenna is width 1/6 wavelength x height 1/2. The antenna build in this project is a full wavelenght antenna for the 50 MHz providing a 6.8 dbi gain.
[ Hits: 224 | Votes: 1 | Rating: 9 ]

Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
[ Hits: 199 | Votes: 1 | Rating: 1 ]

Magnetic Loop for 20 meters band - A magnetic loop antenna designed for 14 MHz. This kind of antennas is also known as STL, small transmitting loop and can be an excellent solution when you are not allowed to put antennas on your roof
[ Hits: 204 | Votes: 0 | Rating: 0 ]

Build this Vertical Portable HF Antenna - An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF bands 20 to 10 meters band. The AHVD Vertical dipole is an upside-down T design
[ Hits: 374 | Votes: 3 | Rating: 9.67 ]

Balcony Dipole Antenna for 20 Meter ^updated - Antenna may be made practically from any wire (strand, solid) having a reasonable diameter 0.5 2.0 mm (24- 12 AWG). Antenna may be installed at any balcony of 3 to 6 meter length.
[ Hits: 341 | Votes: 4 | Rating: 10 ]

AGCW-DL QRP Contest - The AGCW-DL invites all radio amateurs to participate in the annual QRP CONTEST. Annually on the second Saturday in March from 1400 to 2000 UTC. 80-10 meters bands except WARC
[ Hits: 45 | Votes: 0 | Rating: 0 ]

HD8R Galapagos 2021 - DX Pedition to Galapagos will be active from October 26th to November 7th, from 6 to 160 meters (including Warc bands) on CW, SSB and Digi modes with at least 4 stations on the air at the same time.
[ Hits: 112 | Votes: 1 | Rating: 10 ]

PY2GN SDR Brazil - WebSDR Pardinho SP Brazil providing access to HF bands 160 80 40 20 15 11 meters bands.
[ Hits: 135 | Votes: 2 | Rating: 7.5 ]

Aircraft Scatter on 6 Meter FT8 - Aircraft scatter is easily seen on the spectrogram window of digital communication apps, when you know what to look for. Examples of real aircraft scatter usage on six meters band
[ Hits: 180 | Votes: 2 | Rating: 9.5 ]

SW-3B QRP CW RTX - The SW-3B is a Three-band CW QRP transceiver, Weight 180g, output power 5W at 12v, 2W at 9v, works on 40 30 and 20 meters band
[ Hits: 121 | Votes: 0 | Rating: 0 ]

Cigarette Pack for 20 meters Revised - Revision of the Cigarette Pack 14MHz SSB QRP Micro-Transceiver
[ Hits: 138 | Votes: 1 | Rating: 10 ]

Simple 2.4 GHz SWR Meter - This is a simple 2.4 GHz SWR meter which is based around surplus microwave hardware which can be easily found. The main component is a MECA -20/-20 dB Directional Coupler which has a frequency range of approximately 700 MHz to 2.5 GHz.
[ Hits: 144 | Votes: 2 | Rating: 6 ]