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Windipoles is a free passive real time filter simulator. Developed under Visual Studio .NET. No software installation required. Allows design, analysis, optimizations and plots, all graphically.

Vox Recorder is a Windows utility wich allows recording sound from an audio source only when an audio signal is present; its main purpose is to avoid the recording of the silence eventually present at the input.

An homebrewed dipole antenna for 14MHz

A 46ft multi-band antenna for small gardens that works on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV by G7FEK

The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world's leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms

G4URH calculations to design your own antennas, ground plane, half wave antennas, Quad Antennas and 5/8 verticals

High-power 3-500 HF linear amplifier by Don Pinnock G3HVA

Virtual Radar Server is a free windows decoder of ADS-B signals received by several radio receivers and support even networked data feed. The Server publish a Google Maps-based display of aircraft positions and flight list

FT857 Programming Software works with FT817 FT897 too. Demo version available.

Design for a 5 element beam on a 23 foot boom with an unusual combination of performance characteristics

Windows freeware database containing frequencies, locations, and a small logging program capable or recording audio

Vortex Antenna Systems, radio communication antenna aanufacturer and supplier of antenna related hardware. Ham radio HF and VHF Antennas, antenna parts, mast and mounts.

For radio amateurs engaged in propagation studies and DXing on the 6-meter band, understanding the distribution of active beacons is crucial for assessing band openings and signal paths. This resource presents a static map compiled by _Carl-Axel Lindberg, SM6NZV_, illustrating the geographical placement of European beacons operating on the 50 MHz band, which is vital for monitoring sporadic-E, F2-layer, and other propagation modes. The map, last updated in April 2002, serves as a historical reference for beacon locations, allowing operators to correlate observed signal reports with known beacon positions. While not real-time, it provides foundational data for analyzing past propagation events and understanding typical beacon coverage areas across the European continent. Operators can use this information to identify potential receive stations or transmit points for future _DX contacts_ on the _Magic Band_.

SIGINT Systems. Provides the Harvester database system, a professional SIGINT Collection toolkit for radio enthusiasts.

A very compact receive antenna made with ferrite bars by PA0FBK

Survey of galactic synchrotron radiation at 408 MHz in the south of England using a 10 metre dish and a Dicke radiometer

Geog is a suite of programs written by Andy Talbot ( G4JNT ), some of which make reference to a database of UK terrain heights, to provide useful information for radio amateurs

On line shop for amateur radio, cb radio, marine, satellite and scanner supplies based in UK

PMR446 radio information, news, reviews and forum. We also run a PMR446 gateway network using the eQSO system.

An easy to build, compact antenna for wireless lan applications that offers a reasonable amount gain.

Professional Two Way Radio communication by ICOM.

Working with SDR#, adjusting frequency correction and basic setup.

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

Generating Morse code audio files from text input is the primary function of _MorseGen v1.2_, a utility designed for amateur radio operators. The software allows users to specify the tone frequency and words-per-minute (WPM) speed for the generated CW. A key feature is its ability to create a WAVE audio file containing the Morse code, which can then be used in various applications. The program also supports repeating the generated CW sequence at user-defined intervals, making it particularly useful for creating station identification signals or beacons. The practical application of this tool extends to automated station identification, especially for repeaters or digital mode gateways that require a CW ident. By producing a standard _WAVE file_, the output is compatible with most audio playback systems and software. This functionality provides a straightforward method for integrating custom Morse code messages into existing amateur radio setups, eliminating the need for external hardware keyers for simple identification tasks. The adjustable parameters offer flexibility to match specific operational requirements or personal preferences for CW characteristics.

Information about the BDXC and how to join, including a club-compiled list giving time and frequency details for all English language dx and media programmes

Preamp & Power Amp By Alkberto, I0XGR

The following frequencies are assigned to datacommunications in the HF bands within the UK By RSGB data communications committee information.

How to improve the gain of your 5 element Tonna yagi for 50 MHz by roughly 3 db!

NDBfinder allows you to use your PC and soundcard to receive, detect, identify and log NDBs (Non Directional Beacons used for maritime and aeronautical navigation)

MorseMaker is an up-to-date replacement for the Morse Machine shown further down this page. It has been re-written using a different programming language and is now entirely 'stand-alone' requiring no run-time support files. This version also works with Windows XP and can use the soundcard but please note that, unlike its predecessor, it does not split the alphabet into smaller 'learning' blocks and does not incorporate the Morse reader.

Ham Radio On line shop, kenwood yaesu icom alincon ten tec dealer, antenna rotors, antennas, antenna mounts, microphones, antenna mas, receivers and scanners based in Essex England Uk

Sharing information on Topband Homebrew Antennas, Base & Mobile

Homemade SWR PWR Meter based on Arduino

A multi-mode QRP radio beacon built around the Arduino. This radio propagation beacon transmitter project is presented by M0XPD

G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band

by Zaba, OH1ZAA / NN0Y

A Simple Project: One Transistor TRF Regenerative RX

Free format input, User selectable usage of reports, counters for DXCCs, WWL, DOK/UK Counties/CQ/ITU/States/Provinces and more

A pictorial guide to the basic ways of desoldering joints

New and Pre-Owned Agilent, Avcom, Fluke, Hewlett Packard, Instek, Leader, LeCroy, Tektronix,and more ..Oscilloscopes, Spectrum Analyzers, Network Analyzers, Power Supplies, Video Test Equipment, Generators, Meters and more

The aim of the project is test if fractal antennas can work acceptably on HF bands.

An interesting modification to improve the gain of your 5 element Tonna Yagi beam for 50 MHz by roughly 3 db!

A site for Amateur Radio beginners and enthusiasts in Malaysia

G3TPW CobWebb Antenna for the 14, 18, 21, 24 and 28 MHz Bands

by Ken Neubeck WB2AMU

An impedance transformer (9:1) to feed a high impedance long wire (~450 ohm), down to a 50 ohm unbalanced coaxial input.

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

Icom, kenwood and yaesu manuals for sale

10GHz Rainscatter audio files

An interesting review of the Yaesu FT-847 by Mike Foubister ZL3TIC