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MDS-HAM Amateur Radio Products help make operating easier with the Introduction of the RC-1-Y, and RC-1-M rotor control box. A digital rotor control box with a serial computer interface at an affordable price which is made in America.

Group with thousand of memebers focused on NVIS antenna

Video demostrantion of N1MM contesting software use and configuration

Audio and waterfall images of some sounds found on the RF spectrum

Videos of AO-51 operations. Randy K7AGE has produced a number of practical and useful videos including good info on a minimal antenna setup for AO-51 reception.

An inverted Vee antenna calculator that consider also minimun vertical height and horizontal spread by M0UKD

By Justin Glasener K9MU

This program is for downloading, uploading the memory channels and various settings on the TS-2000(X)/B2000. To write data to or read the data from the TS-2000(X)/B2000 memory, an RS-232C straight cable is required. Runs on Windows 98.

W5USJ and BLT Z-Match Tuner Schematics

This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment.

Notes and information about G5RV antenna, analysis of short feed lines and relation with SWR

Ham radio antennas and electronics, specialized in 1/2 wave dipole, OCF dipole, windom, full wave loop, end fed, inverted L, portable end fed antenna, long wire, SWL antenna, fan dipole, multiband dipole, G5RV and military antennas.

SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size. Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.

Let's explore the cubical quad antenna, or quad, and see what it really is and how it really works by w8ji

miLog provides an integrated software solution for amateur radio station management, encompassing logging, DXing, and contesting functionalities. The software is designed to operate on Windows 2000 and later versions, indicating a focus on stability and compatibility within the Microsoft ecosystem. Its feature set includes comprehensive logging capabilities, tools for DX operations, and specific modules tailored for competitive contesting, streamlining the workflow for operators engaged in these activities. The resource details the software's commercial availability and its primary functions, which extend to station control. This integration allows users to manage multiple aspects of their amateur radio operations from a single application, potentially reducing the need for disparate tools. The description also highlights support for various operating modes, suggesting flexibility for different communication protocols and techniques. While the page itself is minimal, it serves as a direct point of reference for miLog, outlining its core purpose and system requirements. The emphasis on a highly integrated approach distinguishes it as a tool aiming to consolidate essential ham radio software functions.

On-Line CB Radio and truck accessory shop based in UK

Dentron GLA-1000 Conversion, modification with 4 x PL/EL-519 or 2 x GI-7B

Amateur radio operators frequently seek efficient methods for logging contacts, particularly during contests or DXing sessions where speed and accuracy are paramount. MiniLogBook addresses this need by providing a streamlined logging utility designed for Windows environments. The software facilitates rapid entry of QSO data, offering an automated lookup feature for previous contacts based on recent callsigns, which significantly reduces redundant data entry. The application's distinctive utility lies in its integration capabilities with other ham radio software, specifically _MRP40_. Users can select text within the MRP40 receive window and, with a double-click, automatically insert that text into MiniLogBook. This feature is particularly advantageous for operators engaged in digital modes like RTTY or PSK, where copying callsigns and exchange information accurately and quickly is critical. The tool aims to simplify the logging workflow, allowing operators to focus more on the contact itself rather than manual data transcription. While primarily a logging tool, its focus on quick entry and interoperability with specific third-party software distinguishes it from more feature-rich logging suites. The software is distributed as freeware by _Polar Electric_, making it accessible without cost. Its small footprint and direct functionality cater to operators who prefer a minimalist approach to logging, prioritizing efficiency over extensive database management or advanced reporting features.

by LA8OKA Martin Storli

The sonoma county radio amateurs invite you to attend our next monthly meeting or check into the tuesday night scra net on the 146.985 repeater at 7 pm.

How to operate on 10 and 20 meters in limited space with this trapped dipole.

This is an 80 metre dipole that fits in a small spac

Grahams Goldcoast Australia Radio Scanner Frequencies

Kenwood Sales, Service, repairs, parts, FAQ, information

3 Element reversable quad antenna for 40 meters band

C Band Transverter for 5668 - 434MHz

CB Radio and 10 meter Radio reviews & mods blog. Most articles are in Japanese

Alpha Delta quality accessories for commercial and amateur radio communications

QRP DIY and more

Automatic band decoder, six way antenna relay, band reject coaxial stubs and more. Top Ten Devices is a two-man company formed in 1991 by N3RD and W2VJN.

Some antenna manufacturers place baluns at the incorrect location in LPDA arrays. If we consider what the balun does we can see how the mistake occurs.

North american 50 Mhz beacon map by K9MU

This document details the design and construction of a Vinecom 6N4 dual-band Yagi antenna for the 50MHz (6-meter) and 70MHz (4-meter) amateur radio bands. The antenna features 9 total elements (4 elements for 50MHz, 5 elements for 70MHz) on a 4.236-meter aluminum boom. Computer simulations using MMANA software predict 7.21 dBd gain on both bands with front-to-back ratios of 16.01dB (6m) and 15.37dB (4m). The design uses 12.7mm diameter elements mounted on a 32mm square boom, weighing 5.7kg total. Practical measurements with an MFJ-269 analyzer confirmed good SWR performance across both bands after element length adjustments.

Replicating vintage radio components addresses the challenge of restoring classic receivers and transmitters to their original aesthetic and functional condition. Many historical radios, particularly those from the _Golden Age of Radio_ (1920s-1940s), suffer from brittle or missing control knobs and trim pieces, making authentic restoration difficult. This resource focuses on manufacturing new parts that precisely match the originals, ensuring period-correct repairs. The service offers a vast catalog of reproduced items, with thousands of molds created since 1987. This extensive inventory includes a wide spectrum of knobs and pushbuttons, along with some plastic escutcheons, grills, and handles. The meticulous reproduction process ensures that restorers can find accurate replacements for brands like Philco, Collins, and Atwater Kent, preserving the historical integrity of these valuable pieces of radio history. The owner, Larry Bordonaro, has been in business since 1987, demonstrating deep experience in this niche.

If you are a ham and live in a modern urban or suburban development, putting up a highly visible antenna may make it difficult to stay friends with your neighbours.

Scanning information and frequencies by Clay Irving N2VKG

Design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over 24dB.

67 ft antenna for portable operation by VE3CLQ

The document provides a comprehensive overview of baluns, which are devices used to connect balanced loads, like dipole antennas, to unbalanced inputs, such as coaxial cables. It covers various types of baluns, including voltage and current baluns, and their design, construction, and testing. The text discusses the importance of baluns in preventing RF currents on coax shields and their applications in Ham radio setups. It also includes practical advice on selecting and using baluns based on antenna impedance and power ratings, along with detailed performance evaluations and construction tips for different balun configurations.

A Lindenblad Antenna for 145 MHz and 435 MHz with an integrated 50 MHz J-pole

AP Communications CB and Amatuer Electronics Sales

Icom IC-7000 product review

Satellite Antennas for LOE Satellites

Problems using the tuner interface in the ICOM IC7000

This article provides a basis to brew your own emergency power pack depending on your needs and tastes.

Eham members product reviews of Icom IC-746

RigPix Database picture of the TS-850

DJ-X3 Memory Management Utility - Edit Memory Bank channels (700). Upload / Download, Load / Save Memory Bank channel data, Full / Partial Reset of radio.

A short dipole wire antenna for 40 meters band. It is a folded dipole that do not make use of coils and can be used either in horizontal or inverted V configuration

CI-V OCX For The Icom 756Pro allow you to interface your own application or visual basic, excel, word or similar custom applications to your icom radio.