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Modified version of the Telerana antenna which was orginially featured in the July 1979 issue of QST. The array is suspended within a framework made of fiberglass poles emanating from a central hub with the ends tied together with light weight rope around the perimeter. 10-15-20-30-40 meter band coverage -
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40 meters band Delta loop antenna plan that is vertically polarised -
Premium quality QSL cards, with samples, preview and on-line order -
Starting from an original project for a 2 element quad antenna for six meter band, ve7ca presents the dimensions for a 3 element version. -
A very quick and easy way to get on the air is to build a "Michigan Mighty Mite" CW transmitter for 160, 80, 40 or 30 meters. It can't get simpler than this. It has very few parts, costs almost nothing, and it works! Cost estimate $10 by VE6WTF -
Here you will find information about wire antennas as well as directional beams. -
Based on Motorola MRF454, schematics and component list -
Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL -
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Lots of information of hidding transmitters, building portable yagi antennas, s-meters, and much more -
Home of the ultimate Ham Radio QSL Label Program! Quick QSL for DOS, featuring great color, dot matrix, laser, and inkjet printer support, a user-friendly interface, -
Continuos coverage HF Transceiver by I6WJB & I6YPK -
Based on a design by JM1SZY for 50 MHz that he developed using YO -
144 MHz Kilowatt Amplifier with a Gu74b. -
Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10. -
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The N2CKH travel special 300 Ohm ladder line convertable antenna -
Some tens of very special audio files recorded during amateur radio activities like aurora traffic, meteor scatter, communications with ISS crew and the sound of various transmission modes that you can hear on HF and VHF bands -
This FET preamplifier has been around for almost 25 years. It is extremely reliable and can handle several watts directly into either the input or the output without failure. -
The page provides a detailed guide on building a successful 160 Meter short TX loop antenna, with specific dimensions and tuning instructions. It includes information on the design, construction, and tuning of the antenna, as well as the materials required. The intended audience is amateur radio operators looking to build an effective antenna for the 160 Meter band. -
remote antenna switching project by EI7BA -
Two types of home-brewed 12/20 Ampere 13,8volt power supplies, including detailed part lists by ON6MU -
2m SSB/CW-12.5 Ohm Yagis with extrem high gain and small bandwidth. These Yagis were constructed as ultra-light, portable Yagis with extrem high gain. They have small bandwidth and are working from 144,0-144,8MHz with good SWR. -
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DTMF decoder program that uses the sound card and FFT to decode DTMF by KB5RYO -
The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers . -
EI7BA Multiband Cubical Quads projects, includes two elements quad antennas for 10 12 15 17 20 meters band. Performance considerations, detailed pictures and construction notes. -
Effective HF Mobile Antennas Keith WB2VUO, explains difficulties on gaining antennas efficiency on lower bands with mobile antennas. -
This antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. -
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A 3 element DELTA LOOP on 20 meter, 4 on 15 and 5 on 10: my new beam (Just some good ideas) -
FT857 and FT897 Interface PCB and schematic -
A 13,8v/5Amp 78H05 based power supply for portable use. In this example used to power up a Yaesu FT-817 -
Suitable antenna for owners of an IC706 or FT817, 857 and other HF portable transceivers. You can an be QRV in a few minutes on all ham-bands from 80m to 6m and even on 2m by PA0FBK -
This transverter was built in 1994, a discription in three parts (german language) for DOWNLOAD as PDF-files. Circuit, printed-boards and layouts in the files -
A full wave 2-meter VHF omnidirectional antenna by ON6MU -
The Inverted L antenna is a versatile and efficient design suitable for small gardens, allowing amateur radio operators to operate on multiple bands. This project outlines the construction of a 5-band inverted L antenna, which can cover HF bands effectively. The design is particularly advantageous for those with limited space, as it requires minimal ground space while providing good performance. The antenna can be easily constructed using common materials, making it accessible for both beginners and experienced hams. In this guide, GM0ONX shares detailed instructions on how to build the inverted L antenna, including dimensions and tuning tips. The project emphasizes the importance of proper installation and grounding to ensure optimal performance. Additionally, it discusses the antenna's compatibility with various transceivers and the potential for portable operation. This resource is ideal for hams looking to enhance their station with a multiband antenna that performs well in limited space. -
The Coax trap program computes design parameters for the construction of coaxial traps for HF usage. Typically these are constructed from PVC tube and RG58/59 coax -
Contest Log Converter it's a Windows program that allow to convert data file between the most used Contest Log. The program allow you to convert 12 different type of contest, selected from the common contest managed from the Contest Log program. The follow program ,CT by K1EA, TR by N6TR and NA by K8CC are full supported with the conversion of the most famous world contests. -
Antenna rotator: how it work,how to repair and how to modify it -
Freeware amateur radio transceiver control program tested with IC-756 Pro. -
Freeware Win98/NT/XP contest logging program, supports over 270 contests, Grid Square distance/heading routines, plus Grid maps by Dave Mascaro W3KM -
Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model. -
Dchematics and photos of a secure power supply (short-cut, Rf feedback, high voltage etc.) by iz7ath -
Calculate bearing and distance and Locator online with this Java application, may not work with all browser. -
This small window application will calculate Coax Cable loss from SWR and SWR from Cable Loss