t type antenna
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Antennas : 160M- Isolation chokes for 160m verticals
- An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
[ Hits: 628 | Votes: 0 | Rating: 0 ]
- 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: 1421 | Votes: 4 | Rating: 7 ]
- A broadband contest antenna for 80m
- The challenge with contest operation on 80m is finding an antenna that works well over the range 3.50 MHz to 3.85 MHz.
[ Hits: 1292 | Votes: 8 | Rating: 6.88 ]
- Antenna Balun
- What is an antenna balun, why and when do you need it, type of transformers, impact on SWR and feed line efficiency.
[ Hits: 1328 | Votes: 1 | Rating: 8 ]
- 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 ]
- Feeder types
- Article descrive the different types including coax and open-wire feeder and waveguide.
[ Hits: 337 | Votes: 0 | Rating: 0 ]
- 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: 876 | 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: 1466 | Votes: 9 | Rating: 4.45 ]
- Wire Antenna Design Lengths
- The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
[ Hits: 327 | Votes: 1 | Rating: 7 ]
- Poles for portable operations
- Reviews of two types of poles used on portable operation to support wire antenna and accessories to plant poles in the ground by N4KGL
[ Hits: 619 | Votes: 0 | Rating: 0 ]
- The Basics of Patch Antennas
- This article explores the basic concepts of patch antennas. Topics include principles of operation, impedance matching, radiation pattern, circular polarization, bandwidth, efficiency, alternative feed types, stacked patches and higher mode behavior.
[ Hits: 803 | Votes: 1 | Rating: 9 ]
- Antennas for portable operations
- Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
[ Hits: 500 | Votes: 0 | Rating: 0 ]
- All About Antennas
- A free five part series on antennas that covers many aspects of antennas, from radio wave propagation, to feed lines, type of antennas, connectors, adaptors and antenna switches by Bob Grove, publisher of Monitoring Times
[ Hits: 1178 | Votes: 3 | Rating: 7.5 ]
- Simple Gain Antennas for the Beginner
- You do not need to invest an absurd amount of money to build a beam type of antenna. Good performance can be obtained with simple antennas made from some very ordinary materials. QST article
[ Hits: 1059 | Votes: 4 | Rating: 6.5 ]
- Comsystems Solutions
- HF Antennas is a division of Comsystems Solutions we manufacture wire broadband antennas and different type.
[ Hits: 187 | Votes: 2 | Rating: 3 ]
- Portable antennas
- N5KGL interesting article on portable antennas. Greg report his experience on using several types of portable antennas.
[ Hits: 595 | Votes: 0 | Rating: 0 ]
- What is Radio Propagation - RF propagation
- Discover the key facts about what radio propagation is, the different types available and how they affect different frequencies.
[ Hits: 198 | Votes: 1 | Rating: 10 ]
- Inside The Icom AH-4 Antenna Coupler
- The AH-4 is an antenna coupler/tuner designed for long wire or whip type antennas.
[ Hits: 579 | Votes: 1 | Rating: 9 ]
- Arduino based antenna rotator controller
- Inspired by Milan OK7GU, the goal is to build an universal antenna controller - for different types of rotor, different motor, encoder
[ Hits: 1196 | Votes: 3 | Rating: 6 ]
- 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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