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A private-public partnership with three main goals to collect weather data contributed by citizens; to make these data available for weather services and homeland security; and to provide feedback to the data contributors so that they have the tools to check and improve their data quality

Pesonal page, QTH Locator : KM19FP

This article describes a series of experiments to understand better how typical UnUns perform

Minos Contest Logging Software, a contest logging suite for VHF and UHF Amateur Radio Contests, Minos offers support for most RSGB and Region 1 events

A trapped multi band end-fed-half-wave antenna for 40/30/20/17/15m.

Select the toroid by material type and dimension of the toroid, the desired inductance and you will get the numbers of turns

The Delmarva Amateur Radio Club is located in Salisbury, Maryland

Presents field test results for an **elevated SuperAntenna MP-1** portable antenna, configured on a tripod for HF operations. The resource details the antenna's setup and performance during a portable activation, focusing on its use across the 40-meter, 20-meter, and 17-meter amateur bands. It includes observations on signal reports and operational considerations for this specific portable antenna configuration. The content provides practical insights into deploying the MP-1 antenna in a non-ground-mounted setup, which is often a point of interest for portable and QRP operators. It documents the author's experience with the antenna's tuning and effectiveness for making contacts under real-world conditions, offering a user-perspective review of its capabilities. The article also features photographic evidence of the antenna's deployment, illustrating the tripod mounting and the overall portable station setup.

Observing how fractal antennas might exhibit characteristics that are correlated to their form by kb7qhc

Installing a mobile rig in a vehicle requires careful planning and execution to ensure optimal performance and safety. The process begins with selecting the right equipment, such as the ICOM IC706MKII for low bands and the ALINCO DR-610 for VHF/UHF operations. Proper mounting is crucial; both radios are strategically placed under the back seat of the Silverado, allowing for a clean installation while maintaining passenger comfort. The Hustler antenna, equipped with various resonators, ensures coverage across multiple bands, while the LDG automatic antenna tuner fine-tunes the match for efficient operation. A remote head for the tuner enhances accessibility, making adjustments easier while driving. Each step of the installation is documented to provide insights and tips for fellow operators looking to enhance their mobile setup. The experience shared here reflects practical knowledge gained through hands-on work, aiming to inspire others in the ham community to undertake similar projects.

A surf between radio history, home made and the sea.

LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz

The Waterville Area Wireless Association was founded in 1957

A great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz.

9M6MU Alfons details his family's efforts to establish an independent, self-sufficient home at Eagle Plateau in Borneo, a 50-acre highland property. The resource highlights their integration of **solar photovoltaic panels** for power generation, alongside managing water supplies, organic gardens, and fruit trees. It covers the practical challenges and rewards of living off-grid, including maintaining power generators and addressing infrastructure needs, all while pursuing the hobby of amateur radio. The narrative emphasizes a holistic approach to healthy living and nature conservation, reflecting the family's aspirations for an ideal ham world. Alfons and his XYL Doris share their experiences in building shelter and antenna farms, showcasing their dedication to independence and sustainable practices away from the conventional grid. The site also references the Hillview Gardens Amateur Radio Club, suggesting community involvement.

The correct procedure for measuring SSB PEP (Peak Envelope Power), using an oscilloscope with a vertical bandwidth of at least 20 MHz, or a monitor scope.

XQ3SA personal website and Chilean Internet Callbook.

Build a 7 Element 4M (70MHz) Beam By Paul M1CCZ

Article on Yagi and Log periodic antennas by Tom, K1JJ

A technical explanation of what is a mesh node in HSMM-Mesh HamNet, with explaination of specific roles of each network interface

The KI7CX 2.4 GHz Cheap & Easy antenna/feed

Baccalieu amateur radio klub inc. is located in carbonear, newfoundland

VK1OD informations on BPL

Amateur Radio Station K7GSE, Telegraph & keys Collection

The GN9120 is an excellent bluetooth type headset. Here an article about GN9120 Wireless Headset Conversion for Ham Radio with PTT

Personal web site WebAPRS and more, in spanish.

Tiny Trak is a simple choice for tracking, simply by using a usual VHF and TinyTrak as APRS modem.

W4YDY Mobile history and installations

FM-EA3BT FM-EA3WFL T08B

Issued by the Irish Radio Transmitters Society

Hamradio, contesting and dx by SM6WXO

The TS-690 was Kenwood All Mode Multi Band HF Transciever

Experiments with Balloon and Kite Lifted Antennas bby G4VGO

The page provides information about the activities and events of the El Dorado County Amateur Radio Club in California, including meeting schedules, field day updates, and presentations by club members.

An exaustive document on frequency multipliers with a particular attention on ways to generate high frequency signals for microwave

Live Streaming Scanner from Paradise, CA

SARA, the Schuylkill Amateur Repeater Association located in central-eastern PA in Schuylkill County.

Amateur Radio web page of links and info I like

Dedicated to:jnos tcp-ip packet radio

News from Pueblo West Amateur Radio Club, Pueblo West, Colorado

Lockheed martin recreation association amateur radio club

Official web site of the Alaska QRP Club The AK/QRP Club is dedicated to the enjoyment of low power Amateur Radio operations.

Natick emergency radio net

The Union Métropolitaine des Sans-filistes de Montréal (UMS) operates daily nets on **VE2REM** 147.015+ T103.5, **VE2RYV** 146.655- T141.3, and **VE2RVK** 145.430- T141.3, alongside Echolink VE2UMS-L and DMR TG302273. This Montreal-based club, representing hundreds of radio amateurs, provides information for those interested in amateur radio and serves as a communication hub for its members, including a regularly visited ham radio flea market section. The site also highlights significant club initiatives like the AREDN Mesh Network modernization project and an innovative after-school program. The UMS website details upcoming events such as the 2026 sugar shack invitation, Field Day 2025, and monthly meetings scheduled for September 18, 2024. It also features a live log sheet section and a WEB SDR, offering practical tools for members and visitors. The club's president, Bruno VE2VK, extends a welcome, emphasizing the UMS's role in fostering amateur radio in the greater Montreal region, with contact information provided for inquiries.

Six meters dxing pages and shack review

Next Generation Beacon hardware platform encompasses both analog and digital modes, i.e. CW FSK and MGM in a mixed mode configuration. The advantage of the mixed mode is that humans can decode the CW FSK by ear and the MGM can be decoded by computers way below what is audible. Therefore the MGM can be used for pre-human-conditions or early warning monitoring.

Peace country amateur radio club, as well as links to other sites

Constructing a high-performance RF spectrum analyzer up to 1000 MHz requires careful attention to component selection, shielding, and circuit isolation. This resource details a project that improves upon the _Spectrum Analyzer for the Radio Amateur_ design by Wes Hayward (W7ZOI) and Terry White (K7TAU), incorporating ideas from Scotty Sprowls' project, particularly his 1013.3 MHz IF bandpass cavity filter. The analyzer utilizes a Mini-Circuits SRA-11 mixer with a sweeping local oscillator from 1013 to 2013 MHz, feeding into a 4-pole copper pipe cavity filter. The design employs a second SRA-11 mixer with a fixed 1024 MHz LO to produce a 10.7 MHz final IF. This signal then passes through narrowband resolution filters and is processed by Analog Devices AD603 and AD8307 ICs for IF amplification and logarithmic detection, driving an oscilloscope in X/Y mode. The project emphasizes modular construction, using salvaged components and double-sided FR4 material for PCBs, with critical notes on minimizing spurious images through effective shielding and proper voltage regulation for each module. Key components include a Z-Communications V585ME48 VCO for the first LO and a Z-Comm V583ME01 VCO controlled by a Motorola MC145151 PLL for the second LO. An optional Hittite HMC307 step attenuator and K&L 5L121-1000/T5000-O/O low-pass filter manage RF input. Tuning procedures for the 10.7 MHz IF resolution filter are also detailed, showing before-and-after spectrum views.

21,145.7 MHz from JN55VF