project design

109 links

Tape Measure 2M Beam - A Tape Measure Beam Antenna for Radio Direction Finding based on WB2HOL design.
[ Hits: 571 | Votes: 0 | Rating: 0 ]

The KL3JM modified SRI Fan Dipole for 80-40-20 Meters - The antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet
[ Hits: 502 | Votes: 1 | Rating: 5 ]

40 Meter 4 Square - A four square antenna for the 40 meters band with pictures, project history and antenna design
[ Hits: 466 | Votes: 0 | Rating: 0 ]

Lindenblad Antenna Project - An homebrew Lindenblad antenna designed specifically for LEOs reception.
[ Hits: 980 | Votes: 0 | Rating: 0 ]

Morgain Antenna, the old lady - 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
[ Hits: 1469 | Votes: 6 | Rating: 7.33 ]

OCF Dipole - This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It is a dipole fed off center with a 4:1 current balun at the offset feedpoint. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands
[ Hits: 2560 | Votes: 7 | Rating: 9.43 ]

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: 753 | Votes: 4 | Rating: 5.75 ]
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: 190 | Votes: 1 | Rating: 10 ]

Field Day Vertical Antenna by KN5L - This Field Day Vertical Antenna project is the result of many years of attending various field day sites and realizing that what was needed is a simple, easy to assemble vertical antenna. The design of this Field Day Antenna is not very novel and leverages ideas from Butternut verticals and ARRL publications. The one essential requirement was that the antenna can be raised by just one person. The design of this Field Day Antenna is an above ground mounted ground plane vertical.
[ Hits: 214 | Votes: 3 | Rating: 7 ]

W3DZZ - 80 to 10 meter antenna - A schematic design of the W3DZZ antenna in portugues with description of trap building
[ Hits: 2588 | Votes: 7 | Rating: 6.72 ]

VK4ZXX Ham Radio Projects Brisbane - Ham radio, amateur radio, satellite communication, radio, radios,antenna, antenna design, yagi, cross yagi, power divider, splitter, Brisbane.
[ Hits: 246 | Votes: 0 | Rating: 0 ]

A Visual Farnsworth On-Line CW Trainer - This trainer is a small personal project designed to play with learning morse code through the Farnsworth method. The main difference between this trainer and others is that I am experimenting with visual reinforcement by displaying the character currently being sent. It is my hope that this will help form a stronger link between the sound of CW and the meaning of the sound. This page should work in any modern desktop or mobile browser,
[ Hits: 287 | Votes: 2 | Rating: 10 ]

TARPN Packet Radio Networking Home Page - Home page for the TARPN node design and promotion. This is an Off-The-Grid Text messaging and educational packet networking project. No Internet required or desired.
[ Hits: 246 | Votes: 0 | Rating: 0 ]

LogHX freeware logger software - LogHX is a freeware windows ham radio logger software, designed as complete Ham Radio environment. Radio control interface, online log book interfaces, cluster access, adif and cabrillo exports, antenna rotor control, Digital CW and SSB macros, full QSL management
[ Hits: 735 | Votes: 4 | Rating: 9.5 ]

JTDX ^updated - JTDX (JT Digital Modes for Linux, MacOS and Windows) is a free, open-source software for amateur radio operators for the reception and transmission of digital modes, including JT65, JT9, and FT8, among others. JTDX is designed to provide improved decoding of weak signals and better usability compared to other digital mode software like WSJT-X. It also has features like a real-time spectrum display, logging, and decoded message storage and retrieval. Download JTDX from the official site.
[ Hits: 3368 | Votes: 7 | Rating: 8.43 ]

Bandpass filter - A simple project for an effective home made band pass filter, designed for the portable field day usage
[ Hits: 791 | Votes: 2 | Rating: 9 ]

Code Practice Oscillator - This code practice oscillator project uses a 555 timer IC. Includes a Schematic Diagram of the morse code oscillator
[ Hits: 612 | Votes: 0 | Rating: 0 ]

A 500 Watt HF Dummy Load and Power Meter - This project was published in the April 2004 issue of the Australian magazine Amateur Radio, and has been designed using parts which are very readily available.
[ Hits: 2012 | Votes: 2 | Rating: 9 ]

QRM killer - An home made QRM Eliminator project based on the WA1ION original design, used to remove QRN generated locally by an halogen lamp in Dutch
[ Hits: 1569 | Votes: 1 | Rating: 9 ]

Hermes-Lite Low Cost HF SDR - The Hermes-Lite is a low-cost direct down/up conversion software defined amateur radio HF transceiver based on a broadband modem chip and the Hermes SDR project. It is entirely open source and open hardware, including the tools used for design and fabrication files. Over 300 Hermes-Lite 2.0 units have been successfully built.
[ Hits: 519 | Votes: 0 | Rating: 0 ]