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The GSARC is one of the predominant amateur radio clubs in Northern Utah.

This project revisits a minimalist software-defined radio (SDR) receiver built using a Raspberry Pi Pico, now optimized for simplicity and affordability. Designed for breadboard assembly with through-hole components, the receiver covers 0–30MHz, supporting CW, SSB, AM, and FM modes with an OLED display and spectrum scope. Key improvements include enhanced frequency accuracy, reduced op-amp saturation, and lower-cost components. Powered by three AAA batteries, it delivers standalone operation for global signal reception. Ideal for hobbyists, the design fosters experimentation and is documented with firmware and schematics available online.

Supporting a telescopic fiberglass antenna pole for ham radio operation. Rather than cumbersome methods like using angle iron or PVC pipes, author employs lightweight tent stakes, toggles, and paracord to secure the pole effectively. With careful knot tying and simple materials, he ensures rapid deployment and stability even in windy conditions, offering a practical solution for outdoor antenna setups.

This page provides a fully customizable band plan. You can easily customize the frequency limits, scale, define custom windows for modes and activities, adding or removing bands. You can tehn Export to PDF or print the bandplan to distribute the document to help hams operating within the designated spectrum efficiently. Useful for both new and experienced hams looking to produce their custom bandplan.

Welkom op de website van de Friese Radio Amateur Groep. Hier vindt u allerlei informatie betreffende de FRAG.

The article highlights the common absence of modern USB-C ports on handheld ham radios and the limited use of USB for power. The author, [jephthai], shares a solution involving a USB-C cable with power negotiation capabilities, allowing the radio to be powered by USB. By splicing Anderson power pole connectors onto the cable, the radio can now be conveniently powered by a USB battery bank, providing a practical alternative to traditional 12 V batteries for off-grid operations.

This article explores budget-friendly methods for launching wire antennas into trees, comparing common options like slingshots and professional arborist tools. The author introduces a simple and cost-effective DIY approach using latex balloons, sand, and readily available materials for efficient antenna deployment in the field

The Murgas Amateur Radio Club is an ARRL Special Service Club in Wilkes-Barre, Pennsylvania, USA.

About LoRa, wireless communication technology designed to transmit data over long distances. LoRa provides a means for wireless data transmission over long distances with low power consumption. Practical applications of LoRa in amateur radio

This antenna works on 17, 20, and 30 meters, with the best bandwidth on 20 meters. The bandwidth on 17 and 30 is quite small but usable. There is a 20 KHz bandwidth on 20 meters.

The Hamradio website of the VRZA Dutch

The IC-705 has a built-in server to to send and receive audio and radio control via WLAN. This allows the IC-705 to be connected directly to the user’s computer without the need for an additional server computer. Perfect to run e.g. digital operation modes completely cordless.

You can use this tool to calculate the maidenhead square by entering the longitude and latitude.

HAM radio related clipart gallery, is a large collection of amateur radio gifs and jpeg images classified in several categories

The Peilgruppe Neandertal, featured on Peilsport.de, actively promotes _Amateur Radio Direction Finding_ (ARDF), also known as fox hunting. This German group combines radio technology with outdoor sport, participating in regional and national ARDF events. Members access current ARDF schedules, competition results, and downloadable certificates directly from the site. The content highlights the adventurous spirit of ARDF, emphasizing the blend of technical skill and nature exploration. DL7ET and DR9P are noted callsigns associated with the group, indicating active participation from experienced operators. The site also covers related activities like Foxoring, a variation of ARDF that integrates orienteering with radio direction finding. This resource serves as a central hub for the Neandertal group's activities, documenting their involvement in a sport that challenges both physical endurance and radio proficiency.

This webpage explains how analog wide area two way radio systems were setup by various states before systems like VIPER, PALMETTO 800, or FLEETNET were established.

The building blocks for Amateur Radio, one concept at a time, collected since 2011 in several podcasts episodes you can listen online.

North Wales Amateur Radio Group (NWARG) was formed in December of 2019 by a group of radio amateurs that yearned for a local club that encouraged it’s membership to use all modes of amateur radio, to experiment with radio, to learn about radio and above all to be friendly and supportive of all of it’s members.

Personal web site by N9SKN about portable QRP operations with pictures of several portable setups and antenna solutions.

The 80-meter Skyloop antenna, a top-performing HF antenna, excels in weak signal work, low-noise operation, and omnidirectional coverage. Ideal for fixed stations, it delivers strong performance at low power, outperforming many alternatives, including 80m half-wave end-fed antennas. Requiring significant space for deployment, it’s well-suited for NVIS and groundwave use. Though not portable, it’s cost-effective and durable, with minor maintenance needs. Tuning may require adjustments for optimal resonance. It’s a standout for base stations, though a lighter portable version could enhance its versatility.

A nice QRP, EME, satellites, VHF DX, Amateur radio blog by Lars Petersen OZ1BXM

An Arduino Based Antenna Switch For The IC-7300 that monitors the band voltage from the rear accessory socket on the IC-7300. Two RF antenna relays are used to switch to the appropriate output.

How to setup and work SO2R with N1MM the popular free contest logging software

The Story County Amateur Radio Club offers a wide variety of opportunities for persons interested in amateur radio. Among the yearly activities are programs on technical topics, radio operating activities, flea markets and sponsorship of ham radio classes.

The MiniPA Linear Amplifier for HF page discusses the popularity of QRP for HF among ham radio operators, such as those using the Yaesu FT818 or low power SDR transceivers. It explores the use of cheap kits from eBay or Chinese suppliers to build a 70-100W SSB amplifier using IRF530 MOSFET transistors. The article provides a review of the MiniPA design, including its features, components, and assembly process. It also highlights the importance of using a heatsink and forced air cooling for optimal performance. This page is useful for hams looking to enhance their HF rig with a budget-friendly amplifier.

This post describes how the newish Power Delivery (PD) mode mobile powerbanks can be used to power a SOTA transceiver as well as keeping your other hiking devices charged.

Sierra Radio Systems site controllers are used to monitor and control remote radio and equipment sites, often implemented to monitor repeater systems, broadcast equipment, solar power infrastructure, tracking rf power, temperature, voltage, current and switch closure

The T41-EP SDT is an open-source software defined transceiver designed by Albert F Peter (AC8GY) and Dr. Jack Purdum (W8TEE) with contributions from others. This detailed guide covers the design, theory, and assembly of the transceiver, making it suitable for both beginners and experts in SDR. Learn about Digital Signal Processing and how it is implemented in the T41-EP, as well as the modularity of its internal design. Kits are available for easy assembly, and a supportive community on SoftwareControlledHamRadio Groups.io provides additional resources for users. Note that software support for additional bands is in progress, offering potential future upgrades.

Serving the Longmont Colorado area

KlaTrack is a Windows-based software application designed to assist amateur radio operators with satellite communication by predicting spacecraft visibility. It provides a simple interface to determine when specific satellites will be above the local horizon, a critical factor for successful two-way contacts via amateur radio satellites. The program processes _Two-Line Element_ (TLE) data to calculate orbital mechanics, offering a practical tool for satellite operators to plan their operating windows. It supports real-time tracking and displays essential pass information. This utility simplifies the complex task of satellite tracking, allowing operators to focus on making contacts rather than manual orbital calculations. While specific gain figures or distances are not quantified, the software's core function directly supports achieving successful satellite QSOs by providing precise pass predictions. It is particularly useful for operators engaging in activities like working the International Space Station (ISS) or other low-Earth orbit (LEO) satellites, where short pass times and precise timing are crucial for maximizing contact opportunities.

A collection of QSL cards from and old operator, Art J. Cook, VE4KZ, who lived in Calgary Alberta, that contained some from the far north of Canada.

The UniBalun is a PCB for building a lightweight antenna transformer (Balun) or impedance converter (UnUn) for low power radios. By soldering jumpers and a toroid core, you can create a 1:1, 1:4 Balun or 1:49, 1:9 UnUn. The latest revision (1.2) includes improved pads and supports both BNC and SMA connectors. Build instructions are available for German speakers.

Decatur County Amateur Radio Club, callsign KW4DC, was formed in 2009 by a group of amateur radio operators who wanted to promote and enjoy the amateur radio hobby together.

The database of Chinese ham radios. We are here to show you that you do not need expensive kit from big brands to have fun with ham radio. With the explosion of open source designs, cheap manufacturing, and global delivery, you can now get on the bands and explore for less than ever before.

A friendly group of amateur radio enthusiasts based in Mutsch St. Lavington NSW Australia

Ribbit is a novel digital text messaging mode for VHF/UHF communications for recreational and emergency use which radically increases the density of information transmitted by spectrum used. It leverages the computing power of the modern smartphone to increase the capabilities of any Handy Talkie without requiring any additional hardware or cable. A Ribbit message is fixed in duration at 1250 milliseconds. It is sent over audio modulation with a 2kHz bandwidth centered on 1.5kHz. It is preceded by 400ms of white noise to open analog squelch circuits.

ICOM IC756 PRO II III, PS125 Fan Modifications, install an external cooling fan on the ICOM IC756 PROIII to minimize the heat on the chassis, then will perform a fan modification on the ICOM PS125 power supply to minimize the fan noise.

Amateur Radio on the Mogollon Rim, run two repeaters both fusion capable

Data Decoder Utility is designed to enhance the operating experience for Flex Radio users by providing advanced connectivity to Peripheral equipment and radio control programs (RCPs) otherwise not available.

The purpose of this insurance is to guarantee the pecuniary consequences of the civil liability incumbent on the insured due to consequential bodily, material and immaterial damage caused to third parties as a result of their radio amateur activities

Explaining ARRL Technical Reviews of Radios a brief tutorial on radio testing. The ARRL Lab tests radio equipment according to standardized test procedures, using calibrated professional test equipment. Info on transmitter and receiver tests

The Woodmont Amateur Radio Association (WARA) invites anyone with an interest in Amateur Radio or public service to come out and visit us. Our members are of all ranges of age and experience so whether you are new to Ham Radio or have been at it for a long time.

Signal Stuff operates as an online retail outlet specializing in amateur radio antennas and related accessories, with a core mission to financially support educational platforms like HamStudy.org and ExamTools.org. The product line prominently features their Super-Elastic Signal Stick™ antennas, available with SMA-F, SMA-M, and BNC connectors, designed for various handheld transceivers including Baofeng, Icom, Yaesu, and Kenwood models. The site details product specifications, pricing, and a lifetime warranty for the Signal Stick™ antennas, emphasizing their role in funding free ham radio licensing study guides and exam administration software. Proceeds from antenna sales directly contribute to the development and maintenance of HamStudy.org, a free online resource for amateur radio license preparation, and ExamTools.org, software utilized by Volunteer Examiner (VE) teams for efficient exam administration. The site also promotes HamBook.org, a free series of comprehensive study guides, which integrates with the HamStudy app and website through links and QR codes for an adaptive learning experience. This business model links product sales to community support, providing essential tools for aspiring and upgrading amateur radio operators.

Free PDF book to start learning morse code and to improve your proficiency, freely available in four languages english, german french and italian.

In cooperation with the URSI Ionosonde Network Advisory Group (INAG), the LGDC promotes cooperative agreements with the ionosonde observatories of the world to accept and process real-time data of HF radio monitoring of the ionosphere, and to promote a variety of investigations that benefit from the global-scale, prompt, detailed, and accurate descriptions of the ionospheric variability.

With some fantasy the circuit can be easily assembled on a small scrap of pre-perf board,and then fitted in the DB9 serial connector shell. The interface requires two NPN transistors and few more passive components.

Learn how to build a QRP digital transceiver with Arduino, based on a project by Burkhard Kainka. This article covers the development process, including the source code, modifications made, and the addition of an OLED display for a more professional look. Discover the inner workings of the transceiver, from the receiver to the oscillator, and how components like the CD2003 are utilized. Explore the schematic design, the use of a PLL module Si5351A controlled by Arduino nano, and more. Ideal for hams looking to create their own digital transceiver for amateur radio operations.

Amateur radio enthusiast Jean-Paul Suijs discusses combating manmade noise (QRM) in radio signals using AI. Detailing experiments with phase-shifting techniques and the self-learning nature of AI, he explores AI-based audio processing apps for real-time noise cancellation during radio contests, demonstrating results on both medium wave and shortwave bands.

Yu produces miniaturized amateur radio transceivers for portable usage. Yu designed and sold the FX-2, FX-4a, and FX-9A. Other products includes the FX-4C, an 80 m through 10 m transceiver that fits in the palm of your hand.

A simple superheterodyne receiver (3.5–30 MHz) for amateur radio achieves stable SSB-CW reception using modern BJTs, an AD831 mixer, a 6-pole quartz filter, and Seiler oscillators. Designed with high IF (4.5 MHz), compact AM-FM variable capacitors, and modular resonant circuits, it ensures selectivity, image rejection, and stable tuning. Built in a copper-lined wooden case, it features practical assembly techniques but lacks advanced features like AGC or S-meter. Effective on basic antennas, it achieves global reception.