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Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength

Club in Portage County. We have fun with ham radio. Meet at Mike's place Rts 43/261 in Kent - 2nd Monday 7pm. All welcome!

Special services club offering monthly meetings, training classes and general advancement of ham radio in the Northwest.

Heathkit Amateur Radio Repair, parts, and manuals. Amateur radio equipment sales and service.

Feirnha DIGITAL a popular Brazilian free ham radio classifieds, links and more

Activating a county for ham radio can be dangerous to your health!

KARSFEST, held at the Will County Fairgrounds. Sponsored by the Kankakee Area Radio Society. Large and well attended hamfest and computer show!

Radio Amateurs of Ankara, Turkey. English, Turkish, homepages of HAM's.

Club activities, news and newsletter Ham Chatter Online features a member each month. Field Day pictures, etc. Home of VOA transmitter sites. Club calls, W4AMC & W1VOA Greenville, NC

HamShield is a powerful VHF UHF transceiver that lets your Arduino talk to far away people using ham radio bands

Manufacturer of custom belt buckles,coffee mugs,t-shirts,sweat shirts,maine gifts,name tags,call tags and awards for police, fire, sheriff, ham radio and amateur radio clubs

This project hereby presented is a complete HAM radio simplex 'smart' repeater, built around a Motorola GM-350/950, Arduino NANO board and a WINBOND audio recording integrated circuit

W5AC is the Texas A&M University Amateur or "Ham" Radio Club. This club, founded in 1912, is one of the oldest university radio clubs in existence.

Personal review of the Yaesu VX-6R handheld transceiver

"W2IK's Personal experience being the first responder at ""ground zero"" during the WTC 9/11 disaster."

About ham radio hobby with hundreds of related links

Design and build custom electronics for clock enthusiasts, Juke Box collectors and the ham radio community. Produces radio interfaces, and radio upgrades.

Ham radio swap and shop from Manitoba Repeater Society

Modifications for motorola and ericsson radio repeater

Free windows world map application display current time, sunrise and sunset, greyline map, dx stations, requires windows 7 or higher. The program includes three resized Natural Earth maps which have been resized to 4k or slightly less. By Simon Brown G4ELI better known as the inventor of Ham Radio Deluxe.

SS232K - The simple and safe RS232 interface for Kenwood radios

Homepage of Hong Kong's elite group of DX'ers

Explore this high-resolution ITU Zones Map, a critical reference resource for amateur radio operators, international broadcasters, and telecommunications engineers. Originally established by the International Telecommunication Union – Radiocommunication Sector (ITU-R) Broadcasting Services Division (1999), this chart accurately divides the globe into 90 specific CIRAF zones. This authoritative visual guide is indispensable for planning High Frequency (HF) radio propagation, scheduling international broadcasts, and verifying locations for radio contests and awards. Distinct from the 40 CQ Zones, the ITU zoning system provides the official administrative framework used for global frequency management. This digitally enhanced version ensures maximum clarity of zone boundaries and numbering (e.g., Zone 28 for Central Europe), making it an essential tool for technical accuracy in logbooks and station management. It serves as a trustworthy standard for educators, hobbyists, and industry professionals alike.

Protecting the ham radio stations, using a good ground system

County Hunting is one of many amateur radio activities. There are over a thousand hams who have worked all of the US counties. Some have done it several times

Ham radio blog dedicated to military radio equipment by EA3FOW

Portable SSTV camera that takes a picture and transmit it with ham radio SSTV

World Castle award web site. The program goal is consolidation of radiohams of different countries for activation and popularization of historical objects all over the world.

Welcome to the Amateur Television Directory, the source for finding sites related to Amateur Television and Ham Radio. Find out where Amateur Television is being used in your state or country.

This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band

The RoadTrek design presents some unique challenges to us hams. Here an example of a VHF and HF antenna installation on a VAN

Ham radio frequency list consolidation software. The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number.

Cannot record CW message, AFSK not working, tracking not working, meter peak hold, on Yaesu FT-920.

Whith more than 20 years of ham practicen SWL Thierry LOMBRY, alias ONL5183, has written several technical pages about ham activities, including propagation, radio perturbations, radioastronomy, DXing, QSLing, ham-spirit, review of material and more. This very interesting website is completed by a large French section devoted to amateur astronomy illustrated with vivid colors pictures.

Extremely reliable FET preamplifier can handle several watts directly into either the input or the output without failure

Ham radio site devoted to classic collectible amateur and military radios, featuring vintage ham radio color photos and commentary, free downloadable manuals and pamphlets and links for ham radio hobbyists.

This scheme can be used to combine two antennas

Various configurations of the Z Match Tuner are tested for power efficiency over a wide range of antenna load conditions

Italian ham radio shop based in Milan

Amateur radio delaer for major ham radio brands in Japan

W0CUO Grand Island Amatuer Radio Society. Grand Island Nebraska.

A selection of alphabets used, particularly by ham radio operators, to spell out words

Amateur Radio - Ham Radio Maidenhead Grid Square Locator Map

Adventure Radio, articles and reviews. This site has a whole host of ham related information.

Harvard wireless club, harvard's amateur radio or ham radio club. founded in 1909. welcome to harvard affiliates, alumni, prospective students, and their parents, as well recent contacts. information about club getting started radio. confirming contacts qsl. flea market. history.

Personal Blog devoted to ham radio topics,homebrew,antenna,satellite and other projects

An interesting article on how to make copper cactus J-Pole antennas

C.B. and Ham-related Radio Shop located and headquarted in Anderson, IN.

Ham radio manuals in italian and english for several makers and products

We intend for this page to tell our story as well as be a resource for other "hams"