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Query: ht antenna
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An inverted Vee antenna calculator that consider also minimun vertical height and horizontal spread by M0UKD -
Collection of different techniques to homebrew PVC yagi antennas, including elements assembling, baluns and chokes, radiator box tips and tricks by dk7zb -
Notes and information about G5RV antenna, analysis of short feed lines and relation with SWR -
Let's explore the cubical quad antenna, or quad, and see what it really is and how it really works by w8ji -
Ham radio antennas and electronics, specialized in 1/2 wave dipole, OCF dipole, windom, full wave loop, end fed, inverted L, portable end fed antenna, long wire, SWL antenna, fan dipole, multiband dipole, G5RV and military antennas. -
Notes on moxon antennas for VHF and HF bands. Main characteristics, gain and f/b ratio by DK7ZB -
Homebrew G5RV a simple multiband antenna. This article shows detailed pictures of a G5RV home made antenna, including antenna size and dimensions by 9M2ZAK -
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Building an omnidirectionnal antenna for the 23 cm band, 1240 - 1270 Mhz -
This 40 meter Inverted V antenna was tested and tuned at a height of 35 feet and proved excellent results. The ends of the antenna are about 11 feet above the ground. Article and video available -
If you are a ham and live in a modern urban or suburban development, putting up a highly visible antenna may make it difficult to stay friends with your neighbours. -
Automatic band decoder, six way antenna relay, band reject coaxial stubs and more. Top Ten Devices is a two-man company formed in 1991 by N3RD and W2VJN. -
Some antenna manufacturers place baluns at the incorrect location in LPDA arrays. If we consider what the balun does we can see how the mistake occurs. -
Some rules of thumb for beginners, with a QRP approach, by James R. Duffey KK6MC/5 -
This document details the design and construction of a Vinecom 6N4 dual-band Yagi antenna for the 50MHz (6-meter) and 70MHz (4-meter) amateur radio bands. The antenna features 9 total elements (4 elements for 50MHz, 5 elements for 70MHz) on a 4.236-meter aluminum boom. Computer simulations using MMANA software predict 7.21 dBd gain on both bands with front-to-back ratios of 16.01dB (6m) and 15.37dB (4m). The design uses 12.7mm diameter elements mounted on a 32mm square boom, weighing 5.7kg total. Practical measurements with an MFJ-269 analyzer confirmed good SWR performance across both bands after element length adjustments. -
Article using a full wave delta loop antenna at low height, feeding methods, performance reports on 1984 QST article by W1FB and W1SE -
DF9CY experience on a vertical antenna for 40 meter band -
The document provides a comprehensive overview of baluns, which are devices used to connect balanced loads, like dipole antennas, to unbalanced inputs, such as coaxial cables. It covers various types of baluns, including voltage and current baluns, and their design, construction, and testing. The text discusses the importance of baluns in preventing RF currents on coax shields and their applications in Ham radio setups. It also includes practical advice on selecting and using baluns based on antenna impedance and power ratings, along with detailed performance evaluations and construction tips for different balun configurations. -
Theory of horizontal loop antennas, as discovered by G2PL using a lowered quad antenna and theorized by ZS6AKA -
Are you having RF problems in the shack since you put up your HF vertical antenna? This is a common problem with an easy solution. -
A Lindenblad Antenna for 145 MHz and 435 MHz with an integrated 50 MHz J-pole -
An introduction to history of Morgain Antenna, since the early origins in Virginia, to the current home made projects and design available on the net. Article in Italian -
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A shortened 160 meters band antenna for hams who do not have 260 ft of space, based on a open-wire-fed short dipoole -
A short dipole wire antenna for 40 meters band. It is a folded dipole that do not make use of coils and can be used either in horizontal or inverted V configuration -
An attic antenna for 40 and 80 meters band by NS1W -
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 -
A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator. -
Specialists in shortwave radio, scanners, amateur radio, FRS (family radio), CB radio, antennas, accessories and publications since 1995. -
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A UHF antenna for satellite reception. Anntenna mast is in wood, made with two aluminium rods -
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A PDF presentation of a home made moxon antenna for 50 MHz 70 MHz and 144 Mhz. The project is mainly out of surplus plastic Plumbing pipes and clips etc, and also details of how the dimensions were calculated. -
Pipe your signals to 146 and 445 MHz with one antenna! -
Comparison chart for low-band receiving antennas -
YF1AR multiband vertical antenna, based on orginal concept by VE7BS. Consist of 6 vertical elements and 6 base radials with a single 50 Ohm feed line. -
In the long history of beam aerials there has persistently existed the claim that certain types of aerials perform better than yagis. -
Understanding Gain differences, j-pole and end-feed vertical antennas. -
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If you have space constraint at your QTH for a HF antenna, you can try contructing this HF magnetic loop antenna for 40-20 meters bands -
A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP -
You can make your own 2-meter "rubber duckies" that will likely perform much better than many commercial units. -
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Why twinlead isn't necessarily a low loss feed line. -
Adventures in amplified GPS antenna construction; an experiment -
6m (50Mhz) Long wire antenna There is another form of long wire antenna which provides uni-directional coverage and is easy to build. Description by Arnie Coro CO2KK