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This project is intended to aid in tuning a balanced antenna or feedline that has a high impedance 100-600 ohms

Project of a windom multiband antenna for 10 to 80 meters in portuguese

The 6 Band Inverted L Antenna MK3 is a versatile multiband antenna designed for amateur radio operators. This antenna covers 160m, 80m, 40m, 20m, 15m, and 10m bands, making it suitable for a wide range of HF communications. The design is based on a W3DZZ configuration, incorporating traps for optimal performance. The MK3 version features a sturdy 5/8th CB mast, replacing the original timber mast, which enhances durability against harsh weather conditions. The antenna's construction allows for effective operation, particularly on the 40m band, where it has been successfully used to contact distant locations including ZL, VK, and Antarctica. Constructing this antenna requires careful attention to detail, especially regarding the radials and grounding. The traps resonate at specific frequencies, and additional resources are available for building coaxial traps. The antenna is designed to work efficiently without an ATU on the lower bands, while higher bands may require tuning. This project is ideal for both beginner and intermediate operators looking to enhance their station with a reliable multiband antenna.

Maker of modified version of the famous DK3 mobile screwdriver antenna by KE0KH

The purpose of this web page is to try to investigate the ICOM IC-746PRO Dead TX problem reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM. If you are the owner of either the ICOM IC-746PRO or the IC-7400 you may already have experienced the Dead TX Issue. If not you may sooner or later.

Echo Link client for Linux and general purpose voice services system for ham radio use. The svxlink server consists of a core that handles the connection to the tranceiver. The core can be configured to act as a repeater controller or to operate on a simplex channel

Italian importer for many Ham Radio companies

Described is a simple inverted-V antenna which, when used with a balanced ATU, can be used on all the main Radio Amateur HF bands (80, 40, 20, 15 and 10m). The cental support is made in such a way that the wire can be coiled up for storage when the antenna is taken down.

HF Communications Analysis and Prediction Tools for Amateur Radio and communications professionals. Featuring: WinCAP Wizard, Beacon-Time Wizard, GeoAlert-Extreme Wizard, ID Wizard, KTS Clock Screen Saver, NERDAlert 2000

Comparison chart between Cushcraft R8, Hy-Gain AV640 , Butternut HF6V, Gap Titan and Eco 7+

This software predicts future passes for amateur radio satellites for a specified location and period of time. It runs on the Android operating system

Thames Estuary DX Group based in SE England. Mods, links and radio contests throughout the year.

A few images to use as a desktop background.

Free program that interfaces most ICOM radios with the ILG radio frequencies database and lets you click a station in the database to tune your radio to the station, or scan the list looking for stations that are on the air.

Ham Radio, SWL and electronic kit manufacturers

IZ7GJX Comparing Kenwood TS-2000 to Icom IC-7000 on various ham radio bands

Morse Code Keyers / Processors and other PIC products. CW RTTY serial and usb interfaces and keyers kits.

Design and manufacturing of electronic components, kits, and accessories for the amateur and commercial communications. CMOS Keyers, W1AW receivers, PC borads kits

Yo5ofh j-pole antenna plans for 2 and 6 meters

Mizuho Tsushin Co. was a small Japanese manufacturer of QRP radios and kits, shortwave receiver accessories, and AM broadcast band receiver kits and antennas

Mods for ICOM IC-706

It consists of a group of JavaScript driven web pages that are intended for use as a quick reference for Ham Radio operators or just anyone interested in electronics. Offer calculators for Resistors, capacitors, inductors, power supplies, filters, attenuators and antennas

A 7 elements yagi beam monoband antenna for 14 Mhz by VE3GK

Ham radio shop with online catalog

Licensing, cost, practical applications, emergency and personal uses and famous hams.

Online shop based in hong kong offer batteries mic speakers adaptors programming cables earpieces telescopic antennas handheld antennas desktop chargers handheld speakers. Kenwood Icom Yaesu and Alinco dealer

The image is a all in one map of ITU Zones displaying worldwide regions and zones. It provides information on ITU Regions at IARU website, aimed at radio amateurs and technical users. Image size is in hight resolution and jpeg format, free to download.

SDR-RADIO.com is a Windows console for SDR receivers and transceivers. Designed for the commercial, amateur radio and short-wave listener communities, the console provides a powerful interface for all SDR users. Many SDR owners have made their radios available over the internet. Just look at the Web Servers page for a list of the radios you can use. You do not need a licence to use this sodftware with RFSPACE, FUNcube Dongles, Soundcard (SoftRock) and low-end SDRs.

The interface described here has been verified to work on the TH-G71 and also the the TH-F6A/TH-F7E

Large picture of a 2011 amateur radio map with DXCC country list

Amateur Radio Ham Radio Maidenhead Grid Square Locator Map online. This map allow just a point and click to determine dynamically the correct six characters locator. Other functions allow to calculate the distances among two given locators, or coordinates. Hover over map, specify grid, or enter latitude and longitude to show grid and/or calculate distance. Map is powered by Bing Maps.

Nagara Japanese ham radio antenna manufacturer

Notes on homebrewing antennas by Chris G4CYA, from gamma matching, to phasing antennas, splitters and combiners, baluns and measuring techniques.

This program needs no other explanations because it is just a terminal program. The only difference is that it is multitasking. This means that you can have multiple connects and you can YAPP without restrictions. You can receive as many YAPPs as you wish simultaneously. If you have more than a RadioPort (You have more than a TNC) you can connect in any RadioPort. You can have also unlimited number of connections (about 100).

Freeware remote control software for Kenwood TS-870 by EC4DFP

An analogic Meter for yaesu FT 857 and 897 by I6IBE in italian

The HPSDR is an open source hardware and software project intended as a next generation Software Defined Radio for use by Radio Amateurs

This 2 meter 3 element cubical quad antenna is small, light weight and portable. A backpack antenna that is easy to put together in just minutes and parts store inside the boom making it ready for travel or storage.

Great shareware software collection for ham radio, includes prefix finders, locators,frequency generators and links to other ham radio software.

One of the Portland ,Oregon metro area's oldest club, all are welcome, if you are in the area, our club repeater is on 146.840 mhz

Aether is an ham radio logging for the Mac. Aether gives hams logging software that is as powerful, easy to use, and good looking as the operating system it runs on. Designed from the ground-up using Apple's Cocoa, Aether supports the latest Mac OS X technologies, and provides the experience that Mac users expect.

Winrad is a software program designed to implement a so-called Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE

ComTekk Software Tone generator for 2-way radio signaling. Use sound card to generate CTCSS, DTMF, tone remote, ANI and more. Synthesizer for simulation and testing of 2-way radio systems, repeaters, remote control, ANI, Paging and more

This web site represents the home of "Country Files", databases of entities (countries), prefixes and callsigns that are used by amateur radio logging software. There are three "flavors" of country files: CTY.DAT used by contest logging software such as CT, N1MM, NA, TR and Writelog DX4WIN.CTY used by the DX4WIN logging software WPXLOC.DAT used by packet cluster software such as AR-Cluster, CC Cluster and DX Spider maintained by Jim Reisert, AD1C

Homebrew a 2 meter 1/4 wave vertical antenna for the 146 mHz ham radio band

This page provides detailed instructions on building a Lindenblad antenna for 137MHz, including practical details, materials needed, and impedance matching. The author shares their own experience and tips for optimizing performance. The content is useful for amateur radio operators interested in constructing their own antenna for satellite communication on the 137MHz frequency.

"Low profile antennas for the ""ham"" radio user"

Amateur radio shop based in germany, major supplier of wireless technology for ALINCO, Kenwood and ICOM.

This article by OK1FOU describes how to build a relatively small loop antenna which can be placed for instance at the balcony. It is especially suitable for a two band antenna covering two adjacent amateur radio bands (10/14 MHz, 14/18, etc.)

A project for a portable antenna for amateur radio satellite reception, for 2 meters and 70 centimeters bands