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One another useful Table for the HAM's practice.

ON7YD slow CW and DFCW TX program for Windows, works with Argo. By Rik Strobbe

An interesting project of the popular IW3HEV antenna analyzer in and embedded solution by PA3CKR.

Radio Club ON4GDV, home page of Gang De Verviers, located in Belgium

Promoting interest in DX to the state of Arkansas and the world.

WI ham club partecipate in Field Day, sponsers an annual Swapfest held in August, and provides various repeaters.

In this article, the author discusses the importance of good transformers for Beverages, especially for common-mode isolation. The author recommends #43 ferrite for the transformer, and provides the turns required for different core types. The author also recommends using lower permeability ferrites for better performance at lower frequencies.

The South Brevard Amateur Radio Club is based in the Melbourne, Florida area and provides volunteer communications services to the public and provides a common organization for amateur radio operators in the south Brevard County area to operate under.

Here are some lengths and spacings for various direct connect beams.

For amateur radio operators engaged in **radio direction finding** (RDF) and **transmitter hunting** (T-hunting) activities, this resource provides a catalog of printed circuit boards (PCBs) for constructing various DF and foxhunt-related projects. The offerings include PCBs for 80-meter fox transmitters and receivers, UHF fox transmitters with audio recording capabilities, and several designs for general-purpose radio direction finders. Specific projects like the "Simple 80M ATX-80 Transmitter" and the "N0GSG DSP Radio Direction Finder" are listed, along with attenuator boxes and specialized components for Doppler DF systems. The catalog details PCBs for projects published in prominent amateur radio magazines such as *73's*, *CQ*, *QST*, and *PE*, indicating their origin and design pedigree. For instance, the "Montreal Fox Controller" is sourced from the *Homing-In* column by Joe Moell, K0OV. The resource also lists components for advanced Doppler DF systems, including main boards, LED display boards, and antenna switch boards, with options for programmed PIC microcontrollers. Pricing for each PCB is provided, allowing hams to acquire the necessary components for their DIY RDF endeavors.

WB4WOR Propagation Beacon on 6 and 10 meters Jointly Owned and Operated by the Broadcast Packet and Repeater Group and Piedmont Amateur Radio GroupRandleman, NC USA

40 meters band 5 watts transmitter, uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen.

For those who are interested in telegraphy, for those who would like to learn it, for those who love it, and for those who want to improve their skills in it

Schematic anc PCB for a fox hunting receiver for 80 meters band

SSTV pictures received from MIR via Slow Scan TV, by WB8ERJ Mike.

KC9L PSK is a free PSK31 program based on AE4JY’s PSKCore DLL. It supports 5 RX channels, full duplex operation, and more. Even if it's development has been dismissed, is a good tool for windows 95/98 pc.

Modification to connect a frequency counter to a MFJ-9406 50 MHz transceiver by ON6MU

eham FT-1000MP MR V Field product review

Review of the Yaesu VR5000 general coverage receiver

The lists are the most comprehensive compilations of frequencies for the Greater Cleveland area

A 915 MHz four bay j-pole antenna plan

SV2AEL QSLs and flags gallery, from almosto every country, include country falg

A 4 AMP / 18V regulated power supply schematic, designed by _ON6MU_, provides a detailed circuit diagram for constructing a robust power source. The design focuses on delivering a stable 18-volt output at up to 4 amperes, crucial for powering various amateur radio equipment. This resource presents a clear visual representation of component interconnections, including rectifiers, filter capacitors, and voltage regulation stages, essential for DIY enthusiasts building their shack infrastructure. The schematic's clarity facilitates understanding the power flow and component roles within the circuit. This circuit design offers a practical solution for hams needing a reliable 18V supply, potentially useful for driving specific transceivers, amplifiers, or accessory circuits. While specific performance measurements or comparisons to other designs are not detailed, the schematic itself serves as a foundational blueprint. Builders can adapt or modify the _power supply_ to suit their particular needs, such as integrating overcurrent protection or fine-tuning the output voltage with adjustable regulators. The straightforward presentation makes it accessible for those with basic electronics knowledge to assemble and troubleshoot.

This program uses a Z-World Micro-g2b board to control up to 4 rotors.

This map is done by Mike, KB8SSH

Australian dealer for UHF CB radios, Amateur Radio HF VHF Radios, GPS navigation systems, two-way radio, cordless telephones, radar detectors, marine electronics, amateur radio gear and many other consumer electronic products.

Hidden transmitter hunting, often called fox hunting or Amateur Radio Direction Finding (_ARDF_), presents a unique challenge for radio amateurs. This resource details the _PicCon_ controller, a specialized device designed to automate the transmission of signals for such events. It integrates with a standard radio transceiver, functioning similarly to a packet radio TNC, by controlling the Push-To-Talk (PTT) line and injecting audio tones or modulated CW Morse code into the microphone input. The _PicCon_ unit is field-programmable using DTMF tones received via the radio, storing all settings in EEPROM for power-off retention. Its compact design and low power consumption (a few milliamps from a 7-35VDC source) make it suitable for remote deployment. An onboard LED indicates operational status, and a push-button allows manual start/stop of transmissions without DTMF. Typically supplied as a kit, _PicCon_ includes a PCB, components, and a comprehensive manual (available in HTML, RTF, and PDF formats). The kit provides a six-conductor interface cable, but users must supply radio and power plugs due to varied configurations. Byon, _N6BG_, developed this controller, which is available from the Byonics website.

Packet Radio networking home page with lots of informations and tech. resources

VK3YE magnetic loop antenna plan that cover 7 Mhz to 20 Mhz and shortening loop can work on 21 Mhz.

G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable

Tips to homebrew your own HF traps using aluminium wire and doorknob capacitor

eham users review of the Cushcraft r5 vertical antenna

A novel approach to contruction of a gamma match.

The people listed here have volunteered to issue IP addresses for their areas

CARF combines the wonderful world of amateur radio with Christian fellowship and service

Web site for March 2000 Clipperton Island DXpedition

A site dedicated to portable operation in the great outdoors!

High Gain Wi-fi Helical Antenna by AB9IL

Iulian Rosu YO3DAC / VA3IUL wire ham radio antenna panoramic with sample drawings

General ham radio related items

The resource presents a detailed schematic for constructing a dual-band vertical antenna, specifically designed for operation on the 2-meter and 70-centimeter amateur radio bands. It illustrates the physical layout, critical dimensions, and component placement necessary for successful replication. Key elements such as the radiating elements, phasing sections, and feed point are clearly depicted, providing a visual guide for radio amateurs undertaking a homebrew antenna project. The diagram specifies the lengths for the VHF and UHF sections, indicating how these elements are integrated to achieve dual-band functionality from a single coaxial feedline. It also implies the use of common materials readily available to most experimenters, focusing on simplicity and effectiveness in its design. The visual format of a GIF image ensures direct access to the construction details without requiring extensive textual interpretation. This schematic serves as a practical reference for hams interested in building a compact, efficient vertical antenna for local and regional FM communications, offering a proven design for immediate implementation.

Theory of the classic Folded Dipole by G3TXQ

Includes some schematic diagrams

Quality communication accessories for motorola, icom, kenwood and nextel radios

Notes on Icom IC-756Pro II and IC-746Pro by I0GEJ

This simple and cost effective interface circuit is designed for use with any ICOM amateur radio equipment with CIV interface

All about homebrew, antennas, accessories for shack, digital tecniques and more..

Beacons recorded audio files by kl7fdq

A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor

Include 6W2SC Online log