antenna coil
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Antennas : 160M- 160m inverted L by W6SDO
- A 160 meter antenna with a base loading coil used to tune the two lower frequency segments of the band.
[ Hits: 1826 | Votes: 3 | Rating: 7.33 ]
- Short Delta Loop for 40m
- A youtube video of a Short Delta Loop antenna, only 8,5 meters per side. This project use a loading coil of 56,7 uH for electrical matching.
[ Hits: 3925 | Votes: 15 | Rating: 6.46 ]
- 40m Linear-Loaded Dipole
- A short dipole wire antenna for 40 meters band. It is a folded dipole that do not make use of coils and can be used either in horizontal or inverted V configuration
[ Hits: 1502 | Votes: 3 | Rating: 8.67 ]
- A very efficient half size 40 meter Vertical Antenna
- A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.
[ Hits: 735 | Votes: 4 | Rating: 8.5 ]
- 3 Element Yagi for 40 Meters
updated
- An homebrew project for a 3 element coil-loaded Yagi beam antenna for 40 Meter band
[ Hits: 1082 | Votes: 2 | Rating: 5 ]
- Coil-loaded 40/80 Meter Inverted V Dipole Antenna
- An inverted V antenna for 40-80 with loading coils. This antenna is a full size on 40 and a shortened 80 by KG0ZZ.
[ Hits: 2420 | Votes: 10 | Rating: 5.39 ]
- Coil-Shortened Dipole Antenna Calculator
- Build an effective dipole antenna that needs much less space by adding two loading coils. This online calculator tells you how.
[ Hits: 1247 | Votes: 9 | Rating: 6.34 ]
- Measuring Coil Inductance
- Measuring Coil Inductance with an MFJ Antenna Analyzer by Scott W Harden
[ Hits: 616 | Votes: 0 | Rating: 0 ]
- Coil Design
- A page dedicated to antenna coil home brewing and coil design by VE6WZ
[ Hits: 1475 | Votes: 12 | Rating: 5.08 ]
- Make Your Own Loading Coils
- Make your own loading coils for antenna projects using Caterpillar Grommet strips.
[ Hits: 1400 | Votes: 3 | Rating: 7 ]
- The Short Dipole Using Coils
- A very popular method of making a short dipoles resonate at a given frequency. This type of antenna is suitable for single band, narrow bandwidth use.
[ Hits: 513 | Votes: 0 | Rating: 0 ]
- Multi-band End-Fed Antenna
- An excellent guide to homebrewing multi band end-fed antennas. The article, embed several drawings including diagrams and detailed pictures, illustrating the basic funcionality of end-fed antennas. The author gives some basic hints on how to build a half size antenna for 80 40 to 10 meters and a 6 meter to 40 meter configuration. It is also well described how to build the impedance transformer and the loading coils for lower bands.
[ Hits: 1100 | Votes: 6 | Rating: 4.5 ]
- End Fed Half-Wave Antennas
- An interesting article on end fed half-wave wire antennas with a couple of original experiments.
Author illustrate the role of the QRP matchbox, and a 40/20 meter antenna with a center stub making it a large bandwidth antenna for 40 and 20. Includes also an 80/40 end fed with the typical coil to make it available on 80 merts band.
[ Hits: 287 | Votes: 2 | Rating: 10 ]
- 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: 678 | Votes: 1 | Rating: 1 ]
- W5ALT Indoor Vertical Antenna
- Base loaded vertical antenna that can be tuned on almost all HF bands, tuned by adjusting the a big coil by W5ALT
[ Hits: 4516 | Votes: 17 | Rating: 7.05 ]
- Balcony Mounted Buddistick Antenna by KP4MD
- The antenna handles 250 watts and covers 40 through 10 meters, with an optional add on coil for 80 and 60 meters. The author in this pages includes an interesting video in which describes the antenna setup, and the importance of the shunting coil on lower bands like 40 and 80 meters. SWR curves diagrams are also included and demonstrate the influence on resonating frequency of the shunting coil.
[ Hits: 279 | Votes: 3 | Rating: 10 ]
- Build the PAC-12 Antenna
- A multi-band portable vertical antenna can be built with relatively ordinary components obtained from the local hardware store, including replaceable loading coils
[ Hits: 1034 | Votes: 2 | Rating: 6.5 ]
- Balcony Antenna for 7 10 14 MHz
- A project for a balcony antenna that works on 7 10 14 MHz made by 2 PVC tubes coiled with insulated copper wire, a solution for restricted lots.
[ Hits: 2476 | Votes: 2 | Rating: 9.5 ]
- Hamtech
- HAM-made engineering products supplies and produces coaxial relays, antenna switches, sequencers, roller inductors, variable capacitors, low noise preamplifiers, RF power rotary switches and coil bodies.
[ Hits: 191 | Votes: 0 | Rating: 0 ]
- 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 ]
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