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Building a 2.4GHz vertical collinear omnidirectional antenna

Vox Recorder is a specialized Windows utility designed for amateur radio operators, and radio listeners particularly those who use radio scanners. This software allows users to record audio from various sources, but it only activates when an audio signal is detected. This feature is particularly useful for avoiding the capture of silence or background noise, which can be common in radio scanning. By focusing on the audio signals, users can create cleaner recordings that are more relevant to their interests. The utility is user-friendly and tailored for hobbyists who want to document their radio listening experiences without the hassle of editing out silence later. Vox Recorder is an excellent tool for anyone involved in amateur radio, as it streamlines the recording process and enhances the overall experience of monitoring radio frequencies. Whether for personal use or for sharing with fellow enthusiasts, Vox Recorder helps ensure that every important transmission is captured effectively.

Popular ham radio packet windows application. By G4IDE (RIP)

Make your own VHF/UHF folded dipoles from aluminium tubing. Learn tips for folding yagi, softening the tubing, bending jig and make all waterproofing

G7EYT, Carl - G6NLC and Neil - M1NCD sucessfully completed a 14Km range check with 802.11B equipment and home built antenna's.

The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one, read more basic thory on Ununs and Baluns

Yagi plans and notes for 6m, 2m, 70cm and 23cm

Large frequency database of uk counties, includes forums and reviews

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

Winlog32 is a freeware amateur radio logging software designed for Microsoft Windows platforms, including versions from 95 up to 11. Developed by G0CUZ, this utility provides robust logging capabilities with a strong focus on DXing across both HF and VHF bands. It integrates extensive tracking for popular awards programs such as DXCC, IOTA, and WAZ, offering features expected from high-quality logging and DXing software. The software is provided without charge to all radio amateurs and SWLs, embodying the spirit of amateur radio. Colin Morris, G0CUZ, has continuously developed Winlog32 over many years, ensuring its functionality remains current and comprehensive. Users can download and utilize the software with full access to all features, free from limitations. While individual distribution is permitted, provided all original files remain unaltered and no charge is made, bulk distribution requires explicit authorization from the author. The software also supports integrations with tools like AGW Packet Engine, ARSWIN Rotator Control, Club Log, and HamQTH Callbook.

My short backfire antenna for 2.45ghz by carl rabe - g6nlc

Monitoring shortwave broadcast stations effectively requires accurate schedule information to identify transmissions. This online utility offers a straightforward, graphical interface designed to search for and display current shortwave radio broadcasting schedules. Users can precisely filter results by frequency, specific language, broadcaster, time of day, and even by shortwave band, which simplifies the process of pinpointing desired content. The database, last updated on March 26, 2023, details station callsigns (e.g., BBC), start and end times in UTC, days of the week, broadcast language, transmitter power in kilowatts, and azimuth. Crucially, it includes the precise geographical coordinates of transmitter sites, such as Woofferton in the UK or Al Seela in Oman. This data is invaluable for predicting signal paths and optimizing antenna direction for improved reception, a key consideration for serious SWLs. For instance, a search for BBC English broadcasts at 21:04 GMT quickly reveals multiple active frequencies like 17780 kHz from Woofferton, offering a clear overview of current transmissions. The tool processes queries rapidly, returning results within seconds, demonstrating its efficiency for broadcast listening enthusiasts seeking timely information.

Design your own antenna trap online

Homebrew VHF Yagi 50MHz 144MHz 432MHz 1296MHz 2320MHz 6M 2M 70CM 23CM 13CM Yagis

If you want a top-performance VHF/UHF Long Yagi, you will probably have to build it yourself.

SigJenny turns your PC into a flexible and powerful audio signal generator for free. It can create multiple waveforms, sweep, fire single or repeating tone bursts. You can save your sound as a wav file, display a frequency response, use SigJenny a bit like an oscilloscope, and do a very good impression of a police car!

World wide six meters beacon list

Complete plans and drawings to build a small 3 elements Yagi antenna for six meter band by Ken Willis

The calculation refers to either a loaded 1/4 wave or a loaded dipole,

Yagi beam plans for 144MHz band

Build a longwire antenna for 50 Mhz

PlanePlotter is a windows decoder of live digital position reports from aircraft and plots them on a chart. Using PlanePlotter, you can see a radar-like display of all those aircraft around you that are transmitting the appropriate digital messages including ACARS, ADS-B and HFDL. Full Trial available for 21 days.

G3JVL Six meters ground plane vertical is a compact antenna that is ideal for portable operations on 50 Mhz

Difona is a german base dealer for amateur radio transceivers, anntennas, PA, power supplies, accessories from several brands like Kenwood, ICOM, Yaesu, MFJ, ACOM, DAIWA, Diamond, DXSR, Alinco, Ameritron, ETM, Fritzel, UKW Technik, AOR, Bencher, Create, G.B., Heil, Hotline, Maldol, Tonna, Titanex, Outbacker, Hy-Gain, Mirage, SCS, SGC, SSB Elektronik

HF multiband mini delta compact and easy assembling antenna that cover from 20 to 10 meters by GM3VLB

This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.

This page discribes microphone wiring connections for most UK and foreign radios. Most U.S. radios are "Code Type 2".

Journal is a **freeware logbook software** designed for Windows operating systems, providing amateur radio operators with a robust tool for managing their contacts. It supports both real-time logging during a QSO and post-event data entry, allowing flexibility for different operating styles. The software facilitates the creation of QSL cards and address labels directly from logged data, streamlining the QSLing process. Additionally, it can generate log sheets specifically formatted for the RSGB VHF-UHF-SHF Competition, which is beneficial for contesters. Derek, G7LFC, developed Journal to be Year 2000 compliant, ensuring its longevity and reliability for logging contacts across different eras. The program supports various operating modes, making it versatile for general DXing, contesting, and everyday ragchewing. Its ability to produce competition-specific logs and QSL materials makes it a practical utility for active operators.

How to make a simple but effective Slim Jim antenna. It includes a calculator to work out all the mesurements for the frequency you require.

The latest and best yagi beams for 432MHz tested and optimized with NEC

This multiband wire antenna it is an off centre fed dipole, with 10 feet of vertical radiator, needs no tuner on 40m, 20m and 10m and works fine on all bands above 40m with a tuner, and even below 40m on 60m, and 80m.

Suitable antenna for owners of an IC706 or FT817, 857 and other HF portable transceivers. You can an be QRV in a few minutes on all ham-bands from 80m to 6m and even on 2m by PA0FBK

Explanation of antenna basics concepts like antenna gain at marc's technical pages

BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.

One common challenge in antenna systems is mitigating common-mode current on the feedline, which can distort radiation patterns and introduce RF in the shack. This project details a 1:1 balun design that ingeniously avoids traditional ferrite beads, often a costly component, by substituting them with steel wool. The steel wool, when integrated into the balun's construction, effectively attenuates unwanted RF on the outer braid of the coaxial cable, ensuring that the antenna radiates efficiently and as intended. The construction involves winding coaxial cable through a PVC former, with the steel wool strategically placed to provide the necessary common-mode impedance. This method offers a practical and economical alternative for hams looking to build effective baluns without the expense or availability issues associated with ferrite cores. The design principles focus on creating a balanced feed to the antenna, crucial for optimal performance of dipoles and other balanced radiators. Experimentation with such designs can lead to improved field results, particularly for those operating with limited budgets or seeking innovative solutions for their antenna systems. The simplicity of using readily available materials like steel wool makes this a compelling build for many radio amateurs.

Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

DSCdecoder decodes the DSC digital signals from ships and coast stations using the sound card in your PC. You need a suitable MF, HF or VHF band radio receiver tuned to one of the DSC distress and calling channels or to one of the Navtex channels

An HF QRP CW RTX built around the Arduino open-source electronics prototyping platform

Acars reformatting and route plotting program

A prototype 2.45ghz antenna for mobile use. This antenna has been u sed for surveying signal strength using a variety of free wlan tools.

G4NCE's illustrated vintage military wireless collection. Featuring British, Canadian and New Zealand Army eqpt, and Royal Air Force eqpt, from WW2 and the 1950's.

With Scancorder you can record and replay audio from your scanner using your computer soundcard. The audio is recorded digitally as a wave file, so that even digital modes can be re-processed or analysed later.

This was a project to make a dummy load or, as the finished thing is more correctly labelled, a fifty ohm resistive load.

Service Manuals & Schematics, supplied for most types of equipment, Audio, TV, Video, Test and Ham Radio

Converts your logs into ADIF (Shacklog, EasyLog, PC-Profilog, LogPlus, DXLog, Log-Projekt, QW, UKWTEST, DAS LOG, HAM-LCT, Eurowinlog, StationMaster, Catlog, ARMAP95/98/2000, SPRINT, WinFD32, WAG, Fivenine, Excel Spreadsheet, CSV or TXT file; also ADIF to ASCII, import into RXCLUS DXCC and IOTA database, *.upf import file for IOTAMEM2 and many other features)

Homebrewina a multiband windom antenna

A friendly dx net who welcomes new comers to amateur radio and the serious dxer alike; Daily from 2000gmt on 14.208mhz. Listen the net live.

A moxon antenna project for 40 and 30 meters

A site for collectors, users, restorers of the historic World War Two radio, The Wireless Set No. 19, built in the UK and Canada, and used by many Allied armies.

BBC World Service England UK web site