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Some printable logbooks or logsheets, made to use whilst operating portable. Download free PDF files in landscape and portrait A4 Format.

The page is about the 144 Mhz Dirty Beacon project, a VHF beacon keyer by 9A4QV. It provides technical information, project details, and resources for amateur radio operators interested in beacon keyers. The content is useful for those looking to build or learn about VHF beacon keyers.

Balun Designs wind high quality baluns and ununs for Amateur Radio and commercial applications based on the researched and tested designs of Dr. Jerry Sevick, W2FMI.

A freware book on learning morse-code. The Art & Skill of Radio-Telegraphy Third Revised Edition by William G. Pierpont N0HFF, online version available in multiple languages

PA is a JAVA software package containing several programs, SW/VHF/UHF Logbook (imports format from RADIOMAN, VMT), Log conversion to HTML format, Import and export functions for RADIOMAN, CT RES files, BV QSL Labels, CSV etc. Internet DX-Cluster support, Keeps track of your worked Callsigns, Checks your worked Grid Squares per band, Databases for worked Grids and Callsigns Uses K1EA CQWW.CTY country file, Easy command line version for terminal operation Moontracking as clock, Pathloss calculation

German amateur radio portal mainly based on a bboard system, by DO1YAO

Chicago area amateur radio club

A monoband J pole antenna dimensions sheet by N6JSX

Free software to operate your own Internet remote base ham radio station. Client module allow remote control to your ham radio station and to other radios available on the net, Host module instead allow to publish your radio in the internet.

Convert a PC power supply for your ham radio transceiver

External Amplifier Keying from the IC-706 by Bob Wolbert, K6XX

103 Amateur Radio photos taken at the Dayton Hamvention in May 1997

Qsl Information databse updated the 1st of the month. Over 130,000 managers and direct addresses

A 160 meter antenna with a base loading coil used to tune the two lower frequency segments of the band.

The San Diego Six SHooters Amateur Radio Club, established in April 2001, is dedicated to promoting all modes of operation on the Six Meter Amateur Radio Band.

Schematic diagram for the Kenwood KPG 46 programming cable interface for Kenwood TM 271E TK 71 TK 81 TK 7302 NX 700 NX 800 series

SARA is a dedicated group of people that formed an international society to learn, trade technical information and do their own observations of the radio sky

Ham radio shop in Madrid Spain

This site provides dates and rules of nearly 400 Amateur Radio HF contests. Based on google calendar system, offer the possibilty to integrate calendar events in your google calendar too.

AN Wireless is a manufacturer and distributor of Self Supporting Tower Systems for Wireless Communications, Wireless Internet, Wireless Networking, Microwave, Paging, Broadcast, Two-Way Radio and Amateur Radio.

Novice Notes Online is Australia's top Internet site for beginners to amateur radio

Ten-Ten International Net, or 10-10 for short, is an organization of amateur radio operators dedicated to maintaining high levels of amateur radio communications on the 10-meter amateur band (28.0-29.7 MHz).

The Yaesu FT-100 is a miniature mobile transceiver that provides coverage of the 160 to 6 meter bands plus the 144 MHz and 430 MHz bands

Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes

Comprehensive guide to understanding of solar indices, reading this article you will allow a better understanding and interpretation of propagation forecast bulletins and propagation reports

Amateur Radio (G3TXQ) - Malta 40 QRP CW Transceiver

Welcome to the official Home Page of SouthEastern Repeater Association Inc. SERA is the largest Amatuer Radio Coordination organization in the United States. SERA represents Kentucky, Mississippi, North Carolina, South Carolina, Virginia, Tennessee, West Virginia and Georgia

Official homepage of the Ukrainian radio amateur UR-QRP Club

NA is an amateur radio logging program for MS-DOS computers, primarily for use in operating in amateur radio contests

ARRL page on amateur radio exam questio pools, withdrawn questions and question pool schedule

What to have before you go.

This is a 24 MOSFET Class E RF Amplifier, covering the 80 and 160 meter amateur radio bands.

Ham Radio online store dealer for Yaesu Kenwood Icom LDG Microham and many more ham radio related brands, based in Holland

An interesting project about an Arduino-based frequency counter fot the Kenwood TS-520S

Original article published on February 1992 on 73 Amateur Radio Today about the 2m and 70 cm copper cactus J-pole antenna

Serving Tarrant, Parker, Wise counties, and city of Fort Worth, Azle, Springtown, Boyd, Weatherford, Saginaw

NetDXCluster provides ham radio operators access to AR DX Cluster nodes using telnet via the Internet. Internet connection is required. This software only works under Mac OS X 10.1.3 or later.

ROS Multimode software for Ham Radio Operators

The biggest RTTY/PSK31 club in Japan includes info on JARTS RTTY Contest

FREE bring & buy website for UK radio amateurs

The website offers a comprehensive guide on high-frequency (HF) skywave propagation for amateur radio operators. It explains HF radio propagation fundamentals, including electromagnetic wave properties, HF bands, and propagation modes like skywave, ground wave, and line-of-sight. The site focuses on the ionosphere's critical role, influenced by solar activity, in refracting HF waves for long-distance communication. Real-time monitoring tools such as DX clusters, beacons, and digital modes like FT8 assist users in tracking band activity and propagation conditions globally. Forecasting methods are detailed, highlighting scientific insights into solar-terrestrial interactions and ionospheric variability. The guide also covers advanced topics like NVIS and gray line propagation, ionosonde data, and propagation prediction models, making it a valuable resource for ham radio enthusiasts aiming to optimize communications

Amateur radio products including Tarheel Antennas and ginpoles

A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.

Free programming software for the Wouxun KG-UVD1P, KG-UV2D, and similar radios.

This article presents a technical investigation into spurious emissions from the Yaesu FT-847 transceiver when operating on the 70MHz (4-meter) band. The author discovered significant problems with both factory "UK spec" and modified units. Spectrum analysis revealed that when transmitting at 70.2MHz, the radio produces numerous spurious signals, with the most prominent emission at 45.6MHz measuring only 3dB below the fundamental frequency. The study also documents poor power efficiency on 4m (10.3% at 30W output) compared to 6m operation (23.5% at 30W). Tests verified that jumper configurations had no effect on filter selection. The author warns that using these radios on 4m may violate license conditions due to excessive spurious emissions.

We are a group of Amateur Radio Operators who travel around the country in Recreational Vehicles and host radio nets to keep in touch with one another

HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.

Generic PI4 + CW + Carrier Arduino Beacon Controller with interfacing to Analog Devices AD9833 DDS AD9850 DDS, AD9851 DDS, AD9912 DDS , AD9913 DDS, ADF4350 and ADF4351 synthesizers, ADF5355 synthesizer, ADF5356 synthesizer, Radio modulated by an audio soft-DDS Reverse DDS, RDDS microwave unit, Silicon Labs Si5351A programmable clock generator, Silicon Labs Si570 programmable XO/VCXO, Texas Instruments LMX2541 synthesizer

The rhombic antenna is a diamond-shaped antenna, suspended between 4 masts.

Comparing the TH-F7E with the Icom IC-E90