vhf antennas

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vhf antennas

119 links - and 3 categories

Antennas : 2M
  • VHF Bi-Square Beam Antenna - 2 Wavelength ,2 Meter Bi-Square Beam , 5dbd gain. This antennas are very cheeap to build and their radiation pattern is similar to a figure 8 with maximum signal through the loop but they may be used as a near-omnidirectional antenna
    [ Hits: 185 | Votes: 2 | Rating: 9 ]
Antennas : Homebrewing Techniques Antennas : Indoor
  • Antennas for HOAs and Apartments - This presentation applies to HF / VHF / UHF antennas and is about 14 different type of antennas suitable for indoor od apartament installations
    [ Hits: 187 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • Exploring The J-Pole Antenna - The J-Pole antenna is a common omnidirectional antenna used in amateur radio, particularly on the VHF and UHF bands. This article is an attempt to explore how the J-pole antenna transforms feed-line impedance to free-space impedance, all the while providing gain found only in the more expensive commercial products.
    [ Hits: 142 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • Portable or Emergency VHF Antennas - Ground Plane - 1/4 wave vertical, J-Pole, 3 Element Yagi Beam and simple antenna supports
    [ Hits: 1010 | Votes: 1 | Rating: 8 ]
  • 2 Meter Portable Yagi Antenna - 144MHz 2m Portable Yagi VHF Beam Antenna. This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use.
    [ Hits: 135 | Votes: 0 | Rating: 0 ]
Antennas : Receiving
  • Homebrew Bicone Antenna Project - Homebrewing a vhf bicone antenna with 8 clothes hangers and 4 feet of Sch40 non-metallic rigid conduit
    [ Hits: 551 | Votes: 1 | Rating: 6 ]
Antennas : Theory
  • Stacking, Phasing and Matching Yagi Antennas - This is a synopsis of a talk presented to the Sydney VHF DX GROUP by VK2ZAB on how, when and why is convenient to build a Yagi antenna stack.
    [ Hits: 238 | Votes: 2 | Rating: 10 ]
Antennas : VHF UHF
  • Dual Band VHF UHF Yagi Antenna projects - On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a Open Sleeve. 4 Element 5 element and 9 element Dual Band - 2M / 70cm antenna projects
    [ Hits: 752 | Votes: 4 | Rating: 5.75 ]
  • ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
    [ Hits: 745 | Votes: 2 | Rating: 8.5 ]
  • VHF-UHF Long Boom Very High Performance Antenna Designs - Experimental Long Boom Antennas - CP, LPDA, multiband with several NEC Files for 50MHz 144MHz 222 MHz 432MHz but also 902MHz and 1296 MHz Antenna projects. Includes also for each antenna model, in a general comparison table each antenna characteristics including Directive Gain, G/T, E-F/R, H-F/R abd Boom Length. This is a great value comparison table of several commercial and home made VHF UHF antenna projects.
    [ Hits: 188 | Votes: 1 | Rating: 10 ]
  • IAT Interactive Antenna Table - IAT is an excel sheet table evaluate parameters of VHF UHF antennas edited by Vladimir UR5EAZ. The difference between this tool and the existing VE7BQH Antenna Table is the use of G / T and C / N instead of the G / Ta parameter. In this table, Vladimir applies the ITU recommendations to assess the noise properties of a radio receiving system and shows the advantage of the G / T concept over the G / Ta concept when choosing an antenna.
    [ Hits: 104 | Votes: 4 | Rating: 9.5 ]
Antennas : Yagi
  • 3 Element Yagi Antennas for 144 MHz SSB-CW - A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.
    [ Hits: 426 | Votes: 4 | Rating: 8 ]
Manufacturers : Antennas : HF
  • Maxcon Antennas - Maxcon makes and sells Amateur Radio Antennas. Double extended Zepp antenna, multiband dipoles, bazooka antennas, and VHF Jpole, made in USA
    [ Hits: 387 | Votes: 2 | Rating: 4.5 ]
  • EPS Antennas - Amateur radio antenna manufacturer, HF VHF UHF antennas, and amateur radio accessories dealer based in Lingen Germany
    [ Hits: 133 | Votes: 2 | Rating: 8 ]
Manufacturers : Antennas : VHF UHF Microwave
  • ANjo Antennen - Amateur radio antenna manufacturer produces mainly VHF UHF beam antennas based in Germany
    [ Hits: 104 | Votes: 1 | Rating: 1 ]
Manufacturers : Antennas : VHF UHF Microwave : Quad Antennas
  • Status Quad - Amateur radio Quad Antennas manufacturer based in Italy produce HF and VHF Quad antennas, and spare parts.
    [ Hits: 453 | Votes: 0 | Rating: 0 ]
Software : Satellite tracking
  • HamGPS - Display your current Maidenhead locator with 10 digit precision. It also computes bearing and distance to a set of target locations using locator or latitude / longitude. Useful to align antennas in VHF / UHF / microwave DX activities. No network or fancy maps usage, so it can be used even in remote locations.
    [ Hits: 381 | Votes: 1 | Rating: 7 ]
Technical Reference : Vector Network Analyzer
  • Analyzing 6 handheld antennas with a VNA - In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report
    [ Hits: 408 | Votes: 1 | Rating: 1 ]

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