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Amateur Radio License exams are composed of questions from a pool. Use this application to practice all possible questions prior to taking your exam

Colombia

Guidelines on operating on ham radio repeaters frequencies

OZ2OE Technical Home Page - 432 MHz PA with 8874

The MFJ-940 VERSA TUNER II is a useful little antenna tuner for the HF-bands. However it suffers from a minor design error, which can be easily rectified.

An inverted V antenna for 40-80 with loading coils. This antenna is a full size on 40 and a shortened 80 by KG0ZZ.

This document serves as a comprehensive guide for amateur radio operators looking to enhance their Yaesu FT-2000 or FT-950 transceivers with pan-adapter capabilities. A pan-adapter is an invaluable tool that allows operators to visualize the frequency spectrum, making it easier to identify signals and improve operational strategies. The guide details the necessary hardware modifications, including the RF Space IF-2000 board and various SDR options, along with their costs and installation procedures. The document caters to operators of varying technical expertise, providing step-by-step instructions and troubleshooting tips. It emphasizes the importance of using a sound card and software like PowerSDR and HRD for optimal functionality. By implementing these modifications, users can monitor multiple frequencies simultaneously, leading to a more productive and enjoyable amateur radio experience. This resource is particularly beneficial for those looking to modernize their equipment and remain competitive in the ever-evolving world of amateur radio.

About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

A french document about Inverted V dipole antennas

Listen to live Digital Police Radio's from Martin and St Lucie County

Collection of world wide radio amateur maps by SP8DA

Radi Australia web site

A collection of VLF natural radio live streams. Where possible, streams are synchronised to provide stereo pairs with baselines of up to 4000 miles.

A well documented article on a small magnetic loop antenna for the 40 meters band

Albania

yaesu radios community talk, impressions and comments about yaesu vx7r

KB1GW's collection of beverage antenna information

An home made trapped dipole antenna for 40 and 60 meters band by 2E0HTS

K6ZB Bruce presentation of technologies to allow ham radio operate via internet

This simple hack turns your Raspberry Pi into a powerful FM transmitter

Vintage and reproduction electronic parts specialist - Antique radio dials and knobs, 1940-1970 era phonograph cartridges, needles, idler wheels.

Now home to over 1,000 radios and transmitters dating from the spark era up to.

Home page of the Dallas Amateur Radio Club, located in Dallas, Texas. The DARC is one of the oldest clubs in the country, founded in 1914.

Pascal VA2PV article on G5RV in french

MDARC has a membership of over 300 dedicated hams and is one of the largest amateur radio clubs in California.

Police and Security Broadcasts at Harvard University, Boston-Area University Police Radio. Cambridge; Boston.

How to use packet radio using the WindowsCE operating system

Home made discone antenna used with RTLSDR dongle

Live space weather and propagation data, in RSS (XML) format.

EME operation news, typical moonbounce audio recordings

The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength, shown

Simple, inexpensive and lots of fun! Here is an easy to make home brew antenna that can get you on the air working satellites or be built for use as a portable hand held antenna to extend the range of your HT.

Collection of TS-50 mods, LCD display dark, TS50<-->AT50 communication, TS-50 Power Mod for QRP, TX Coverage mod TS-50, CAT control for TS-50S

Memory management program for the FT-60R/E FM handheld.

US callsign database is updated daily and is derived from FCC license data provided by University of Arkansas at Little Rock

Radio City features a wide selection of amateur radio equipment from Kenwood, Icom, Yaesu, MFJ and a host of other manufacturers. Visit the store in Mounds View or shop here, online.

FT-1000MP Automatic Band Selection Interface Bob Wolbert, K6XX

A project for a multiband HF windom antenna by VE2CV and VE3KLO

Map of italy with amateur radio prefixes and grid squares

Using the T2FD antenna for shortwave listening by AB1KW

Swedish made, lightweigt towers

A Guide to safely wind toroidal cores by vu2fd

Long Waves, Short Antennas, designing antennas for MF and LF communications

Features and specifications for Yaesu FT 857D

CB Radio and 10 through 12 meter band radio dealer. Ranger Communications factory authorized dealer. Service 10 and 12 meter and CB radios.

An interesting article on building a 4 elements yagi antenna with gamma match for the 2 meter band. This article include two videos demonstrating assembling procedure by KG0ZZ

Based in San Diego CA, collectible radios, test equipment, tubes, antique radio parts, speakers and kits

An 87ft inverted L portable antenna working on 80 40 30 20 15 meters band

GitHub reposotory of QradioPredict, a radio propagation prediction tool for VHF-UHF, based on the Irregular Terrain Model, also known as Longley-Rice. Can be used as a repeater site planing tool. Has an internal APRS client which can be used to display stations as a landmark.

This is from a posting on the BARK PBBS Keith, WB2VUO