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Antennas : 40M- 40 Meter Bowtie Antenna
- A bowtie antenna is a type of antenna that reputedly provides higher gain at lower radiation angles than a center-fed dipole antenna at heights considerably less than 1/2 wavelength above ground.
[ Hits: 1423 | Votes: 4 | Rating: 7 ]
- A Quick and Dirty 6M array
- If you are looking for an antenna that can be put together and thrown up quickly, yet provide gain for the six meter band you should try this solution by VE1ZAC
[ Hits: 814 | Votes: 1 | Rating: 9 ]
- 5 Element LFA Yagi for 6 meters band
- A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.
[ Hits: 1179 | Votes: 7 | Rating: 8.57 ]
- 80m Vertical Loop
- The configuration of this antenna is a triangle with apex in the top of a very tall tree. The antenna is fed at a bottom corner using 450 ohm ladder line.
[ Hits: 786 | Votes: 1 | Rating: 8 ]
- VHF Collinear Antenna
- This antenna will cover the 2 meter Ham Radio frequencies. This collinear antenna has a total gain factor approx 6 to 7dbd on two meter band
[ Hits: 2302 | Votes: 6 | Rating: 4 ]
- 7dB VHF Collinear Antenna
- This project is about a cheap way of building a colinear antenna for VHF 145MHz, and having about 10dB more gain than that little 1/4-wave magmount
[ Hits: 4756 | Votes: 15 | Rating: 6.41 ]
- DL-Special DX Antenna - 2 Delta Loops in Phase
updated
- Two Delta-Loops in phase. The purpose of this article is to propose an antenna with a high gain, a high efficiency and a very low price that is
easy to build for any frequency.
[ Hits: 1076 | Votes: 5 | Rating: 7.8 ]
- Line Loss Calculator
- Types of coax-cable with rf attenuator calculator, line loss calculator form includes an antenna gain calculator. This coax loss calculator can help you on choosing the right cable for your antenna sysmte.
[ Hits: 879 | Votes: 3 | Rating: 6.67 ]
- Understanding the Hexbeam Antenna
- The Hexbeam is a great little antenna! It should be high on your list of options if you want a design that can be multi-banded, exhibits useful gain and directivity, is very lightweight, has a small turning radius, and which lends itself readily to Do It Yourself construction.
[ Hits: 505 | Votes: 4 | Rating: 8 ]
- Morgain 80-160
updated
- A dual band antenna designed to work on low bands and in this article on 80 and 160 meters band. Total lenght of this folded dipole is 37,60 meters. Includes some details for fine tuning on 160 meters. Article in italia
[ Hits: 2191 | Votes: 13 | Rating: 6.84 ]
- A Multi-band HF loop antenna
- The multi band HF loop antenna, a good performer on 80 and 40-10 meters. This excellent article covers all aspects of designing a resonant loop antenna, examining gain and radiation patterns, and describing practical notes on how to build this antenna.
[ Hits: 11239 | Votes: 26 | Rating: 6.76 ]
- 2 Meter 5 Element Quad
- A five element quad antenna for 144 MHz DIY Project.
This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly.
[ Hits: 1889 | Votes: 9 | Rating: 6.23 ]
- Dish antenna
- Dish antenna and its theory and design for high performance applications such as satellite transmission and reception as well as microwave links.
Parabolic Reflector Antenna: Dish Antenna
The parabolic reflector antenna which is often called the dish antenna provides an antenna solution applicable for VHF and above where high gain and directivity are needed for all type of radio communications and radio reception.
[ Hits: 1030 | Votes: 0 | Rating: 0 ]
- Curtain Antenna
- An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles, is a high gain directional antenna, designed for medium and long range communications.
[ Hits: 854 | Votes: 0 | Rating: 0 ]
- Antenna directivity and gain
- Antenna gain and directivity explained in this article at radio electronics antenna pages
[ Hits: 515 | Votes: 2 | Rating: 6 ]
- The .64 Wavelength Secret
- A .64 wave antenna is the highest gain single element design available anywhere with at least a 0.8 dB/d of gain towards the horizon, than any 5/8 wave element.
[ Hits: 780 | Votes: 9 | Rating: 6.67 ]
- WiFi Long Range Helical Antenna
- High Gain Wi-fi Helical Antenna by AB9IL
[ Hits: 1284 | Votes: 4 | Rating: 6 ]
- Laptop Mini Wireless Antenna
- A small antenna to improve signal reception of a laptop wireless card. This will boost the gain of your wi-fi card and will increase network speed and bandwidth.
[ Hits: 1292 | Votes: 7 | Rating: 3.29 ]
- 3 element Yagi for 40m
- EF403 is a 3 element yagi antenna for the 40 meters band with high gain and F/B Ratio
[ Hits: 3479 | Votes: 12 | Rating: 4.49 ]
- Amateur Radio - Microphone Preamp
- Low signal, noise-high AC gain preamplifier
[ Hits: 1010 | Votes: 0 | Rating: 0 ]
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