gain

gain

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• HyGain LJ-153BA - The HyGain LJ-153BA a monoband 3 element Yagi, designed for the 15 m band 21.00 - 21.45 MHz
  [ Hits: 842 | Votes: 1 | Rating: 4 ]

• 144MHz Pocket Portable Yagi - Design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over 24dB.
  [ Hits: 1561 | Votes: 7 | Rating: 8 ]
• 2 Meter Vertical Moxon - A home made vertical polarized moxon antenna for 144 MHz, includes dimensions, antenna pattern, SWR and antenna gain plots by WB5CXC
  [ Hits: 2086 | Votes: 4 | Rating: 7.5 ]
• 2m Big Wheel Antenna - A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz
  [ Hits: 1322 | Votes: 4 | Rating: 7.75 ]

• 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 ]

• 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: 4755 | Votes: 15 | Rating: 6.41 ]

• 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 ]

• How to make a HB9CV - The HB9CV is a well known two element antenna of a directional beam type with a forward gain of 4 to 5 dBd. This one is for two metres but it can be scaled, from the dimensions in the diagram, for other bands I have also made them for four and six metres
  [ Hits: 1476 | Votes: 9 | Rating: 4.45 ]

• Cavity antennas - Cavity antennas are weatherproof antennas for UHF and microwave frequencies. Require more metal for the same decibels of antenna gain but a cavity antenna is relatively easy to weatherproof.
  [ Hits: 305 | Votes: 2 | Rating: 5.5 ]

• Quad or Loop antennas - Quad and loop antennas comparisons, evaluating the impedance and gain of both antennas and considerationso n horizontal loop antennas for low bands by PA0FRI
  [ Hits: 1718 | Votes: 10 | Rating: 4.9 ]
• 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: 1888 | Votes: 9 | Rating: 6.23 ]

• 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 ]

• Gain of parabolic antennas - Gain we can expect of a parabolic antenna by F4DAY
  [ Hits: 312 | Votes: 0 | Rating: 0 ]
• Antenna Gain - An interesting guide to aerials comparing height, gain and angles
  [ Hits: 428 | Votes: 0 | Rating: 0 ]
• 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: 779 | Votes: 9 | Rating: 6.67 ]

• Balloon Vertical Omni-Antennas - Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole
  [ Hits: 771 | Votes: 1 | Rating: 5 ]

• 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 ]

• IC-746 Modification - Increase microphone gain of the Icom IC-746, and how to add continious-on cooling fan
  [ Hits: 432 | Votes: 0 | Rating: 0 ]

• AZ-EL USB Rotor Controller AE-21 - AF6SA USB antenna AZ-EL rotor controller compatible with Yaesu G-5500, G-450, G-650, HY-Gain and other AC motor rotors
  [ Hits: 961 | Votes: 2 | Rating: 5.5 ]

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