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The purpose of this page is to capture and document the Yaesu FT-101 series radios during the 1970's -
Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas -
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Clips of DX audio, some dating back to the late 70's to early 80's and up to March 2001 -
The PIC-MORSE is an electronic iambic keyer, integrating a generator of Morse code and a sidetone. It is built with a microcontroller PIC16C711. In French -
The Moxon Rectangle is growing in popularity as a compact 2-element array that approaches a full-size 2-element in gain but with a far superior front-to-back ratio and a direct match for the standard 50-Ohm coaxial cable. -
Almost a fresh QSL manager Database, Country Tables for YPLOG by VE6YP (updated monthly), Additional files for the TRLoog by N6TR. Technical topics for HF Contesting (mostly CW), software download (a huge collection) -
160m T Antenna broadcast design by Guglielmo Marconi has been built and is used by Jim NN4AA on 160m. Article by G7LRR -
ON4VT SSTV and personal page, includes a large software review, introduction for beginners and webcams showing sstv on the net -
Windipoles is a free passive real time filter simulator. Developed under Visual Studio .NET. No software installation required. Allows design, analysis, optimizations and plots, all graphically. -
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A 46ft multi-band antenna for small gardens that works on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV by G7FEK -
Lot's of info on 950sdx tranceiver by Jeff King ZL4AI/DU7 -
Welcome to Amateur Radio (HAM RADIO), by ARRL. A good Starting point for novices. -
A compact Beam Antenna That Can Be Built At Home. Made with lightweight wooden "X" frame with two folded and linear loaded wire elements. The two elements are approximately a half-wave each. -
Edited by Oz6OM to find out who's on 50MHz expeditions anywhere around the world. Most recent news on the web. -
F6CHT plan for a multiband yagi antenna that covers 6 to 30 meters band in french -
Very strange morse keyers, like Onion chopper CW key, Handshake CW key, Chopsticks CW key, Typewriter CW keyboard, Refrigerator CW key by OH6DC -
These pages are entirely devoted to the Kenwood TS570 series Transceivers. Specifications & Brochure, Pictures, Schematics, Reviews, Manual and Modifications. -
Great pages about KB1SG rhombic antennas collected by EI8IC. -
F5RDH project of a transverter, that can receive input in HF and convert output to 144 Mhz in french -
A very compact receive antenna made with ferrite bars by PA0FBK -
Antennas and homebrew ancilliary equipment -
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Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by Jean-Francois Fourcadier -
Two 50 Mhz amplifiers and antenna switch -
Presents the detailed construction of the _FLA25HV_ antenna, a specialized array optimized for Earth-Moon-Earth (EME) communications on the 2-meter band. This resource provides schematics and practical insights into building a high-gain antenna system capable of reflecting signals off the lunar surface, a challenging but rewarding aspect of amateur radio. It covers the mechanical and electrical considerations essential for achieving the precise pointing and signal strength required for successful moonbounce contacts, often yielding **20 dB** or more gain. Amateur radio operators pursuing EME operations require robust antenna systems and precise tracking capabilities. The FLA25HV design addresses these needs by focusing on element spacing, impedance matching, and structural integrity to withstand environmental factors while maintaining critical alignment for lunar reflections. Such systems are crucial for making contacts over distances exceeding **768,000 km**. This personal page serves as a practical guide for hams interested in constructing their own EME arrays, offering a glimpse into the technical dedication involved in pushing the boundaries of VHF/UHF propagation. -
VHF/UHF DX site showing latest propagation, software, radio dealers, awards, maps etc. -
Shortwave dxing newsletter, Cumbre DX is dedicated to reporting what's hot in regional and international shortwave broadcast listening -
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Excellent low-noise receive antennas originated by EA3VY and optimized for 160 meters by K6SE -
A 400 W 144 MHz GI7b Linear amplifier -
HFUnderground.com is dedicated to documenting longwave, mediumwave, and shortwave stations, including broadcasters, utility/military stations, pirate radio and spy numbers stations. -
Live feed from Warren county fire dep. radio -
This page displays a 404 error, indicating the original content describing a simple _RS232 interface_ circuit is unavailable. The circuit was reportedly designed for older Kenwood transceivers and featured in chapter 22 of the _ARRL Handbook_. It likely involved basic electronic components for level shifting and signal conditioning between a computer's serial port and the radio's control interface. The intended project would have detailed the construction of a hardware interface, enabling CAT control for specific Kenwood models. Such interfaces typically convert TTL or CMOS logic levels from the radio to the +/-12V levels required by RS232, often utilizing ICs like the MAX232 or discrete transistor circuits. While the specific schematics and bill of materials are absent due to the page error, the context suggests a DIY electronics project for enhancing legacy amateur radio station functionality through computer control. -
Setting up and testing a sound card packet radio interface by KD5ZUG -
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A marriage of the windom and slinky antennasm, article by NC4TC -
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German page about packet radio, english version available -
G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band -
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Diagram and sample ferrite balaun for 1.8-30 MHz -
Differential Global Positioning Service (DGPS) is a land-based augmentation system that receives and processes signals from orbiting GPS satellites, calculates corrections from known positions and broadcasts these corrections via a Medium Frequency (MF) Transmitter to DGPS users in the Broadcast Site's coverage area. -
The aim of the project is test if fractal antennas can work acceptably on HF bands. -
Bobtails are vertical arrays that look like the letter "E" turned 90° clockwise onto its tails. They have 3 quarter wave vertical elements and are one wavelength long. The Half Square is a shortened Bobtail- it has 2 quarter wave vertical elements and is a half wave long. -
The WT0G crazy W dipole, a solution for 160 meter operations