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Irish Radio Transmitters Society

Radio New Zealand International is a Shortwave Broadcaster. Our broadcasts are beamed to the island nations of the Pacific but can also be heard in other parts of the world.

Details the construction of an **HF converter** designed by M1GEO, George Smart, specifically to extend the frequency range of the FunCube Dongle Pro (FCD) for amateur radio reception. The FCD natively covers 64 to 1,700 MHz, but this project enables reception from 0 Hz to 64 MHz by up-converting signals to the FCD's operational range. It employs a **double-balanced mixer** with a 100 MHz local oscillator (LO) to translate incoming HF signals; for instance, a 1 MHz signal appears at 101 MHz within the FCD's passband. The design incorporates a 7th-order Chebyshev low-pass filter with a 62 MHz cutoff frequency at the input to mitigate image frequencies, ensuring cleaner spectral presentation. George provides the schematic, PCB masks, and Gerber files for replication, noting that Far Circuits also offers PCBs. The resource includes test results for the low-pass filter and measurements of LO leakage, identifying -36.8 dBm at 100 MHz as a potential sensitivity concern. M1GEO discusses potential improvements, such as adjusting the mixer's LO drive, adding a balance pot, or incorporating a post-mixer high-pass filter to reduce LO breakthrough. Audio recordings from 40m and 17m demonstrate the converter's performance with WRplus SDR software.

This website explains coverage and construction for our repeaters. Includes useful links and an insight into the Ham community in Rhode Island

Wiring a Balanced Microphone to the TS-590S Unbalanced Microphone Input

TwinsLAN is Minnesota's only amateur radio club devoted to digital communications

Home for dutch speaking radioamateurs, wordwide. We also provide information about our hobby in english and other languages. Hamradio guide for visitor to Holland

Ardf holland, information about ardf activities in the netherlands, in english and dutch

These charts show the New Zealand bandplan

A friendly and open group that likes to organize DX-expeditions like F/ON6JUN/P, OZ/OR0MO

The Highland Amateur Radio Association (HARA) centers itself in Hillsboro, Ohio.

The Peekskill / Cortlandt Amateur Radio Association, Inc. (PCARA) is a Volunteer Non-Profit Community Service Organization Serving the Greater Peekskill / Cortlandt Area of Westchester and Putnam Counties in New York State. PCARA operates three voice repeaters in the Northern Westchester / Southern Putnam County region of New York State.

Yaesu FT-817 noise blanker improvement

A modification to improve quality of built-in FT-817 Noise Blanker

Some things I've discovered about learning and operating CW by Chris Kantarjiev K6DBG

A mini Dxepidition to Piel Island on 24th/25th of May 2008 by the CQ CQ Portable group and the call sign will be GB0PIA.

Suomen Radioamaooriliitto r.y.

Union Schweizerischer Kurzwellen-Amateure

Operating on the 146.880 MHz repeater, the Inland Empire VHF Radio Amateurs (IEVHFRA) hosts a weekly net, providing a consistent on-air gathering for amateurs within Eastern Washington and Spokane County. My experience with similar regional VHF nets confirms their value in fostering local ham radio community and sharing information, often covering topics from equipment troubleshooting to upcoming hamfests. The club, active for over **50 years**, also organizes the _Inland Empire VHF Tailgate Swap_, an event featuring vendors, emergency communication demonstrations by Spokane ARES-ACS, and POTA/SOTA activity setups. Such events are crucial for hands-on learning and direct interaction, which I've found invaluable for new licensees and seasoned operators alike. Beyond on-air activities and events, IEVHFRA supports the hobby through amateur radio classes and testing, facilitating new license acquisition and upgrades. They also maintain an online messaging group for members, ensuring continuous communication and information exchange.

An amateur radio organization dedicated to furthering the amateur radio hobby. It consists of members from Oakland, Alameda, Piedmont and other cities in the immediate area.

Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole

The New England QRP Club is where "The excitement is building...."

K8qik amateur radio club

The RSGB Band Plan is normally published annually in the February edition of RadCom and additionally reviewed mid-year. It is derived from the IARU Region 1 Band Plan taking into account any proposed national variations or special amendments, which are considered necessary by the relevant spectrum manager.

Radio Society of Sri Lanka

D.I.C. Diploma Isole Campane from Italy

Listen to Cleveland Police Dispatch and Metro Housing Authority via the Live Audio Feed Web Player

The official home page of the Greenland EME DXpedition 29 May - 5 June 2000

Hjemmeside for amatorradioklubb LA1G, Grenlandgruppen av NRRL

The Langley Amateur Radio Club has been in existence since 1988 and received it's charter in 1989. It has a membership of approximately 20 active amateurs.

This page describes how to make the inexpensive Ten-Tec model 297 noise blanker work with the Drake R-4C receiver.

The Guernsey Amateur Radio Society (GARS) provides a central hub for amateur radio operators in the Bailiwick of Guernsey, offering resources like a local _GU Callbook_ and specific notes tailored for visiting operators. The society maintains an active presence, holding regular meetings on Friday evenings from 7:30 to 9:00 PM in a unique World War II bunker located within the grounds of the Beau Sejour Leisure Centre. Beyond in-person gatherings, GARS facilitates on-air activity with a 2-meter net operating on 145.525 MHz every Tuesday night at 8:00 PM. Additionally, a DMR net is hosted on Thursday nights at 8:00 PM via the _GB7GY_ repeater, catering to digital mode enthusiasts. These nets provide opportunities for local members and visitors to connect and exchange information. Phil Cooper, GU0SUP, serves as a key contact for the society, managing inquiries and web content. The club's location is precisely described as being down a concrete staircase to the left of the road when approaching the Concourse entrance, making it straightforward for newcomers to find their way to the club's distinctive meeting place.

pictures and description of QRSS activity

This page is a short description of the four phased verticals system for 160m 80m and 40m

IARU NCDXF Beacon in Sri Lanka 4S7B working on 14.100, 18.110, 21.150, 24.930, and 28.200

Alfa Tango England web site.

Southeast Georgia island hoppers

The Island of Giftun is locate at 3 miles from Hurgada Egypt

Central Oregon DX Club N7LE

The New England Historical Radio Society Inc. is an organization dedicated to the preservation of commercial Morse Radiotelegraphy on medium and high frequency.

Describes Atlantic Tower Services (ATS), a company specializing in antenna tower erection and maintenance, operating from Orlando, Florida. ATS offers a range of services including site maintenance, structural repairs, system modifications, and complete tower installations for various communication needs. The company emphasizes its capability to handle diverse tower projects, from routine inspections to complex upgrades, ensuring structural integrity and optimal performance for amateur radio and commercial installations. ATS focuses on delivering reliable infrastructure solutions, supporting the backbone of communication systems. Their service portfolio covers critical aspects of tower ownership, addressing both preventative care and reactive solutions for existing structures. They are equipped to manage projects involving different tower types and heights, adhering to safety standards and operational best practices. Services include **site maintenance** and _structural modifications_.

ARDF-Funksportreferats im DARC

A non-profit organisation devoted to the preservation of early radio equipment and associated historical information.

SIARC is not for profit corporation located in Ontario County, N.Y

IOTA from Island

My ham spirit, my publications and my home-made!

Plano Amateur Radio Klub

Bags, tool storage, portable solar panels dealer

A hobby club for those dedicated to collecting, restoring, and preserving vintage radio and television equipment.