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This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components.

TurboLog is a station management and logging program designed for amateur radio operators, providing robust database and logging functionalities. It features fully integrated support for controlling typical radio station equipment, including transceivers, packet radio TNCs, Morse and voice keyers, and digital mode terminals. The software also incorporates antenna switching capabilities and acoustic alerting, streamlining station operations for DXing and contesting. The program's utility extends to award tracking for entities like DXCC and IOTA, alongside comprehensive callbook and ham database integration. It supports log import and export, QSL label generation, and includes TNC drivers for packet radio. The trial version allows users to evaluate its extensive features before commitment, making it a versatile tool for managing complex amateur radio station configurations and operational data.

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

EME system by F1EHN is a software suited for EME operation, traffic procedures in real time

Dimensions for the inverted V antenna from 160 to 2 meters by N6JSX

Unlocking the full multiband potential of the 225 Ohm elementary radiator in a folded monopole, dipole-like or turnstile layout, by Francesco Errante

EUDXF European DX Foundation

RTTY.COM has been established to focus on the many aspects of Amateur Radio Teletype (RTTY) and to present to the dedicated RTTYer, and to the curious, a location wherein one can find information relating to RTTY and BAUDOT communications.

Distributor of extruded aluminum alloy tubes & tubing

Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.

About longwire antennas, technically to be a true longwire an antenna needs to be at least one wavelength long, but common use of the term by Hams is for any random wire length that is end fed.

A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.

Demonstrates the construction of a 144 MHz turnstile antenna, detailing its design for omnidirectional, horizontally polarized VHF operation. The resource outlines the physical dimensions and materials required, including specific lengths for the radiating elements and the use of _RG-58_ coaxial cable for phasing. It covers the assembly process, emphasizing the critical spacing and connection points to achieve the desired radiation pattern and impedance matching for the _2-meter band_. The article presents measured _SWR_ performance across the 144-146 MHz segment, showing a low SWR of 1.2:1 at 144.5 MHz, which is suitable for general VHF use. It compares the turnstile's performance to a 9-element Yagi, noting the turnstile's advantage in providing consistent signal strength from all directions without requiring a rotator. Practical application for local FM simplex and repeater operations is implied, offering a simple yet effective antenna solution for fixed or portable stations.

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

Clandestine radios, cluster beacons and dx stations recordedd by AA5TB

DXPocketâ„¢ is a fast, stable, low-traffic, and easy-to-use DX Cluster program for Android-powered smartphones and devices. DXPocket monitors the DX Spots and Announcements available on the Internet at DX Summit web site and presents the information in a sortable grid format. With a few taps you can find a required station in the Cluster, obtain DXCC information of selected DX, send DX Spot or Announcement.

Search for NVIS on google groups

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

SMIRK club news, DX information, content details, and forum for 6 meter operation enthusiasts.

A nice loop antenna project for 28 MHz with schematic diagram, construction details and a complete video instruction

Cobalt Pet is a weblog focusing on shortwave radio. It features shortwave reception reports, product reviews, photos, listening tips, and links. International broadcasters and amateur / ham radio operators are monitored and discussed.

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

Pictures of IC-7000 and related accessories

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.

Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

Electronic communication museum Bloomfield, NY USA

Kenwood TS-590S remote control software

OZ2OE Technical Home Page - Building a circular polarized yagi

Homebrewed handheld RF powermeters for various sensors by DL5NEG

Radioberry Radio hat for raspberry pi. HF (0-30 MHz) The latest development of PA3GSB is a radio card plugged into a raspberry pi (2 or 3) , a so called rpi-hat, forming an amateur radio.

Optimizing performances of the end-fed antennas QRP quarterly article

Yaesu FT-1000MP Mark V Field review by W4TI

A 40 meter NVIS beam antenna by W4NVK

eham FT-1000MP MR V Field product review

Review of the Yaesu VR5000 general coverage receiver

Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting. Tubes replacement, resistor changes.

A project of a 5 Antennas Relay Switch Box, all Switches & Relays have both contacts wired in parallel to improve reliability of operation, to prevent static build up, when an antenna is not in use the feeder coax is grounded.

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

17-Element Very High Frequency/Ultra High Frequency Log Period Dipole Array

Links to cb radio operators web pages

Western New Yorks largest radio store since 1961

A 915 MHz four bay j-pole antenna plan

Connecting the iPad or the iPhone to a Yaesu FT-817 using an home made cable, using common digital modes like PSK31 RTTY and SSTV. Article by Andrew VK3BQ

CW Midi for Windows and for DOS (free), morse code MIDI file creator

Search for recent spy numbers listening or add your loggings.

An excellently presented article on the design and construction of a medium wave DX Antenna

In this article K3DAV show a very simple way to make an RF choke coil that will remove your RF feedback troubles

Get on SSTV FAST with this quick tip quide. All the info you need to get started quickly.

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