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A 20-meter window frame stealth antenna, based on a design by _PD7MAA_, utilizes a single 620cm wire loop for discreet installation. The feeding mechanism employs a _4C65_ toroidal core, where the antenna loop functions as a single-turn secondary, and the feedline wraps twice. Tuning is achieved via a 30cm twisted wire stub, allowing for SWR adjustment within the 20m band. This design is specified for QRP operation, with a maximum power limit of **25 Watts** to prevent core saturation or arcing. Wire selection recommendations include thin, insulated copper wire (0.75mm to 1mm) for blending with architectural elements. The guide focuses on practical construction steps for a low-profile 14MHz antenna.

Candlewood Amateur Radio Association

Article cover hints and tips on ham radio or amateur radio contesting and contests

Gain we can expect of a parabolic antenna by F4DAY

IOMARS affiliated to the RSGB in April 1948. This is the only OFFICIAL site of the Society. The primary club for Amateurs on the Isle of Man

Some pictures of Ham Radio Lightouses Awards

Remote Ham Radio via WebRTC Audio Raspberry Pi 3. Stream Transceiver Audio to and from the remote station though a Browser using WebRTC.

Solar power supplies combine a photovoltaic (PV) solar panel with a Lithium Iron Phosphate (LiFePO4) battery to provide reliable, off-grid power for amateur radio stations, camping, remote equipment, emergency preparedness, and anything else that needs power.

How to build a limited space 10 and 20 meter band Square Halo DX antenna. A horizontally polarized antenna for 10 and 20 meter band, which is suitable for a limited space.

Marquesas TX7EU DXpedition 2016 2016 Mar 3 - 2016 Mar 15 IOTA OC-027

VK3MO, An inspiring Australian Amateur Radio operator

Just my little corner of the world, one radio at a time

Seaside Tsunami Amateur Radio Society

Wythall Radio Club is one of the most active clubs in the Midlands.

Le radio club de la Cote Basque, amateur radio pages about HF / VHF / UHF / digital modes, Projets with arduino and raspberry , training classes.

A nonprofit corporation registered in the State of Iowa

JPR Electronics have been in the business of supplying electronic components and accessories to manufacturers, sub-contractors, designers, distributors, MOD, government departments and educational establishments

I am an EMT-B,an Incident Commander for NM Search and Rescue and an Amateur Radio Operator - KD5KTY Dedicated to the Preservation of Life through Search, Rescue and Education services.

Mirage BD-35 2M/70CM RF amp high SWR, how to troubleshoot

Serving the community since 1936 through Amateur Radio. Meetings every 3rd Monday of the month.

Easy to use online Slim Jim antenna calculator. Input your frequency to automatically calculate the lengths of the different antenna parts.

A close up of Doppler Shift, a phenomenon which is commonly observed by the lay person, yet still confuses many amateur satellite operators.

Operating an amateur radio club, VE2CEV details its activities, including regular meetings and a significant project involving the construction of a **satellite ground station**. The resource outlines the project's inception, team formation, equipment acquisition, and the physical installation of antennas and rotator systems. It specifically mentions the use of a dual-axis AZ/EL rotator and antennas for VHF, UHF, and SHF (2 meters, 70 centimeters, and 13 centimeters), along with the strategic use of **Heliax cables** to minimize RF signal loss. The club also provides information on its interconnected repeater network covering southwestern Montérégie. The content highlights the practical application of the satellite station for communicating via amateur satellites and the International Space Station (ISS). It details the collaborative effort of members in securing a powerful Linux server, negotiating antenna installation with local authorities, and the precise alignment of antennas. The club emphasizes its role in guiding new amateurs, offering demonstrations, and potentially organizing courses, indicating a focus on community engagement and technical education within the amateur radio hobby.

Online Log for 3C1L DX pedition powered by clublog

A sample morse code QSO template. In this page you can find a standard QSO message protocol between two operators.

Datasheet Locator is a free tool that enables you to locate product datasheets from hundreds of electronic component and semiconductors manufacturers

FTB8800 is a memory management software program for the FT-8800R/E FM transceiver

Harris DMR Manufacturer, provides advanced, technology-based solutions that solve government and commercial customers' mission critical challenges

The National Digital Link Cisar CisarNet Project

Ascension Ham Radio Club based in Gonzales Louisiana

A new ham finding his way in the hobby

Mooncalc shows the motion of the Moon and Moon phase for a particular day at a particular location. You can see the moon positions for moon rising, selected time and Moonset.

How to receive NOAA weather satellite with a home made QFH Antenna. This project includes some easy and efficient notch filters to suppress noise from FM frequencies

10 Meter Propagation Beacon OE3XAC

Smith Chart it is a graphic tool for solving transmission lines problems

ARDF IARU Region 1 working group

Stuff about amateur (ham) radio, especially VHF/UHF, QRP, portable and mountaintop operating

Paulding county's oldest and largest ham club. Skywarn

A calibration kit useful when you need known reference impedances to properly calibrate your vector network analyzers.

MCRCA Monroe County Radio Communications Association

Botswana October November 2010 DX Pedition

Martin Ewing, AA6E

Amateur radio and family related site. Good ham links. Great pictures of antique amateur radio and military gear.

APRSTT translate-O-Matic convert online your callsign in DTMF

Remote Control Panel for ICOM IC-M710

Running from Rome area at 28321 Mhz

A review of the MFJ-259B Antenna Analyser writtten by G3CWI

Australian antenna manufacturer, Mobile 1 CB Radio Antennas, Mobile Phone Antennas 3G, NextG, EDGE Digital Radio & TV Antennas Broadcast Band Antennas Airband Antennas Amateur Band Antennas Scanner Antennas Commercial Antennas

The branch of electronics dealing with devices that generate, transform, transmit, or sense optical, infrared, or ultraviolet radiation