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X1M QRP SSB CW HF transceiver by K7JOE

Kenwood TS-690S Preventive Maintenance

An overview of digital HF radio operating modes includes a sample audio recording of each digital mode by WB8NUT

W1WD review and reception performance test of the Elecraft K3 transceiver.

VR-120 Commander is a windows programming software for the Yaesu VR-120 and VR-120D

10 meter 28.286 mhz 100 milliwatt Beacon

Simulation of a top loaded vertical antenna for 1.2 MHz

The Icom IC-7600 compared to other Icom HF radios , like IC-756Pro III, IC-7700 and IC-7800 by VA7OJ/AB4OJ

Pro and cons of Digital ATV versus Analogue ATV

How is your SWR - determine the power loss to expect for a given SWR, includes an excel spreadsheet by n3ujj

Voice ID for repeater stations project

Program for the control of the transceiver from your PC. Works on windows and has been tested with different serial and USB interfaces, Based on hamlib libraries , Auto CQ for repetitive calls, Audio Recorder, BktNetInterface for JTDX and WSJT-X

Make your own battery clip by nj2x

Using the RC-D710 Display with any HT The Display Head for the Kenwood D710 mobile APRS radio contains all of the APRS functionality in addition to the normal Radio control functions.

Select the toroid by material type and dimension of the toroid, the desired inductance and you will get the numbers of turns

Installing a mobile rig in a vehicle requires careful planning and execution to ensure optimal performance and safety. The process begins with selecting the right equipment, such as the ICOM IC706MKII for low bands and the ALINCO DR-610 for VHF/UHF operations. Proper mounting is crucial; both radios are strategically placed under the back seat of the Silverado, allowing for a clean installation while maintaining passenger comfort. The Hustler antenna, equipped with various resonators, ensures coverage across multiple bands, while the LDG automatic antenna tuner fine-tunes the match for efficient operation. A remote head for the tuner enhances accessibility, making adjustments easier while driving. Each step of the installation is documented to provide insights and tips for fellow operators looking to enhance their mobile setup. The experience shared here reflects practical knowledge gained through hands-on work, aiming to inspire others in the ham community to undertake similar projects.

Elecraft KX3 Review by a QRP DXer and Contester

The correct procedure for measuring SSB PEP (Peak Envelope Power), using an oscilloscope with a vertical bandwidth of at least 20 MHz, or a monitor scope.

TS-850 is not much effective on AM since it does produce fairly clean audio, however while it does noticeably improve low-end frequency response

A technical explanation of what is a mesh node in HSMM-Mesh HamNet, with explaination of specific roles of each network interface

A 2 elements yagi beam for 12 meters band with liear load

General rules for All ARRL Contests

The Japanese-made Maldol MFB-300 HF vertical antenna offer extremely wide-band performance, with a specified frequency range of 1.0-60 MHz.

The GN9120 is an excellent bluetooth type headset. Here an article about GN9120 Wireless Headset Conversion for Ham Radio with PTT

A CW beacon keyer for 222 MHz by VA3NFA

It is possible to detune the tower so that, at least on one band, the tower can be made to effectively disappear. That is, become non-resonant on the band of interest. This allows the vertically-polarized low-bands antenna to meet its potential.

Abbreviations used in CW operation

KComm, a logging and communication program, was specifically engineered for Elecraft K2, K3, and KX3 transceivers, leveraging the Lazarus cross-platform development tool. It operates natively on Windows XP and can be compiled for Linux, with potential for macOS, prioritizing low resource usage for casual DXers and contest participants. The software integrates with external applications like Fldigi for diverse digital modes and CW Skimmer for advanced Morse decoding, enhancing its functionality beyond basic logging. The design philosophy of KComm emphasizes utilizing the physical radio controls for operational adjustments, rather than replacing the transceiver's front panel. It facilitates keyboard CW operation via the Elecraft serial protocol and capitalizes on the K3 and KX3's built-in decoders for RTTY and PSK31. Additionally, KComm supports PSK31, PSK63, and PSK125 through the AE4JY PSK Core DLL on Windows and integrates with PSKReporter.info for spotting. While not a dedicated contest logging or award tracking program, KComm supports ADIF and Cabrillo export for casual use, allowing logs to be imported into other software. The author, G4ILO, ceased all software development, providing KComm "as is" without further support or updates; however, the source code is available under the GNU GPL for community continuation.

Tiny Trak is a simple choice for tracking, simply by using a usual VHF and TinyTrak as APRS modem.

W4YDY Mobile history and installations

Pictures of the restructuring of the ham shack starting from an existing garage. Changes includes isolation of walls and roof and rebuilding of the radio table.

Mobile installation of a Kenwood TM-D710 and comparison with the Yaesu FT-350R

How to program the memories of the Yaesu FT-7900R without a computer

Morse Code And Radio For Kids and Amateurs. This guide covers many different aspects of the history of and how to learn Morse code.

formerly called TARA RTTY Sprint

Javiation page dedicated to the ICOM IC-R20 150KHz - 3305 MHz communication receiver

This air-powered Tennis Ball launcher is designed to launch tennis balls over trees towing fishing line.

The Kenwood TS-450S is a formidable transceiver covering 160 through 10 meters including the WARC bands with 100 watts input

The Utah Amateur Radio Club - Radio Direction-Finding RDF

An interesting article about amateur radio portable operations with excellent pictures. Setup includes a 60 watts of portable solar power being controlled by a charge controller, and a batteries powering an FT-897D.

New IOTApedition: 10 - 15 January 2006

A photographic reference for wire and wireless telegraph key collectors and historians

This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.

This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts with limited space. Each of the parallel circuits (trap) behaves like an isolator on its resonant frequency.

Operating QRP at the lowest possible power during contest article by PA1B

G8EPR pye telecoms museum incorporating.. emeregency services & radiotelephone museum of great britain

Schematic diagram for a high voltage power supply by W4NFR

A 12v portable oscilloscope project

Radioing Collins Radio collection

A travel, or a fixed vertical coax antenna originally designed by PA0FBK. This antenna is very easy to make from a piece of 50 ohm or 75 ohm coaxial cable, and can be either smooth, roll-up version, or rigid cable