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Antenna Gain
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Antennas : Theory : Antenna Gain
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Antennas : 10M
- Cubic Quad
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- The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands
[Hits: 31196 | Votes: 20 | Rating: 4.71] Antennas : 15M
- The extended double zepp
- This wire antenna exhibits extraordinarily high gain in a bi directional radiation pattern.
[Hits: 8916 | Votes: 27 | Rating: 8.04] Antennas : 80M
- WH2T's Double Extended Zepp Antenna
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- This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.
[Hits: 15287 | Votes: 22 | Rating: 6.05] Antennas : Collinear Antennas : Delta loop Antennas : Helical Antennas : Mobile
- Effective HF Mobile Antennas
- Effective HF Mobile Antennas Keith WB2VUO, explains difficulties on gaining antennas efficiency on lower bands with mobile antennas.
[Hits: 5258 | Votes: 3 | Rating: 7.00] Antennas : Quad
- Quad Loops
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- Quad loops can be a practical way to get some gain without constructing a full Cubic Quad
[Hits: 9997 | Votes: 3 | Rating: 5.00] Antennas : Shortwave Antennas : Theory : Antenna Gain Antennas : VHF UHF
- QM5 Yagi for 2 meters band
- The QM5 antenna is a simple 5 elements Yagi with 1.88 m boom length for the lower 144 MHz SSB/MGM band, I used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 9.17 dBd; i.e. 11.3 dB forward gain over the isotropic radiator, while the F/R is about 11.5 dB. Elements
[Hits: 3450 | Votes: 0 | Rating: 0.00] - QM7 7 elements 144 MHz Yagi-Uda Antenna
- The QM7 antenna is a simple 7 elements Yagi with 3.70 m boom length for the lower 144 MHz SSB/MGM band, used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 11.35 dBd; i.e. 13.5 dB forward gain over the isotropic radiator, while the F/R is about 12.5 dB
[Hits: 3565 | Votes: 10 | Rating: 5.00] Manufacturers : Antenna Parts : Fiberglass tubing
- Max-Gain Systems, Inc.
- Fiberglass for the antenna builder, Antenna Mart quads, Bandmaster quads, transmitting components, vacuum capacitors and relays, tower accessories, gin poles, remote RF coax switches, rotating side mounts, quad spreaders, quad parts, bristol wrenches, doorknob capacitors, transmitting electron tubes, and much more!
[Hits: 4162 | Votes: 7 | Rating: 7.43] Manufacturers : Antenna Rotators
- C.A.T.S, Rotor Doc
- Manufacture CATS antenna rotator and digital controls. Service, stock, and provide parts for top quality AMERICAN-MADE antenna rotators from companies such as Alliance, C.A.T.S., CDE/Hy-Gain, and Channel Master, both young and old.
[Hits: 5098 | Votes: 14 | Rating: 5.92] Manufacturers : Antennas : HF : Vertical Antennas
- KVK Antenna Systems
- The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.
[Hits: 1695 | Votes: 0 | Rating: 0.00] Manufacturers : Antennas : VHF UHF Microwave
- Hy Gain
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- HF UHF/VHFAntennas, dipoles, accessories and rotators
[Hits: 28401 | Votes: 21 | Rating: 6.62] Manufacturers : Antennas : VHF UHF Microwave : Quad Antennas
- SuperPass Company Inc.
- Antenna manufactuer, Panel antennas, sector panel antennas, high gain for ISM, MMDS, PCS, GSM, CDMA, TDMA, 400MHz, 900MHz,1.9GHz, 2.4GHz, 2.7GHz, 3.5GHz,5.8GHz. Broadband wireless applications for ISP,ASP.
[Hits: 1292 | Votes: 4 | Rating: 5.50] Software : Antenna analysis
- Yagi Designer
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- Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios
[Hits: 12203 | Votes: 41 | Rating: 6.57] - ERP Calculator Plus
- ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss
[Hits: 1575 | Votes: 5 | Rating: 5.80] Software : Antenna rotor control
- DXView
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- A free application that displays location information determined from a callsign, displays beam headings and SpotCollector DX Spots on a world map, displays country maps, and provides point-and-click control of antenna rotators from AlfaSpid, ARSWIN, Heath, Hygain, M2, Prosistel, SARTek, TIC, Trackbox, and Yaesu
[Hits: 15314 | Votes: 475 | Rating: 7.65] Software : Utilities
- Frees
- Calculates the freespace range of a radio-link. It is useful for radio amateurs, radio engineers and for SETI signal estimations. Calulation of parabolic dish antenna-gain is included.
[Hits: 1133 | Votes: 0 | Rating: 0.00] Technical Reference : Homebrew
- StackMatch for two antennas by T93M
- There are few products available to HAM community and all of them are very sophisticated tools. Some of them are able to switch up to four antennas in phase (stacks) and even out of phase to produce high elevation angle of radiation.
All of the available products are remote controlled, meaning that switching box is somewhere on the tower in order to phase two or more antennas for additional gain and lower take off angle (TOA).
[Hits: 1043 | Votes: 2 | Rating: 10.00] Technical Reference : Preamplifiers
- 2m Band VHF antenna pre-amplifier
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- Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981
Dual-gate MosFet. Gain ~15 dB, NF=1dB.
[Hits: 5591 | Votes: 52 | Rating: 9.04] Technical Reference : Radio Frequency Interference : Noise Reduction
- Antenna Noise and Signal Cancelling at LF
- By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
[Hits: 4604 | Votes: 2 | Rating: 5.50]
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