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Ham Radio club Prykarpattia Ivano Frankivsk

The KA7OEI Blog offers random musings on technical subjects related to amateur radio, with a focus on improving stability using the QRP Labs ProgRock 2. It provides insights and tips for ham radio operators looking to enhance their equipment.

Single Sideband (SSB) operation requires careful attention to the relationship between a radio's displayed frequency (suppressed carrier) and the actual 3 kHz wide audio signal. This resource clarifies how Upper Sideband (USB) and Lower Sideband (LSB) signals occupy spectrum above or below the indicated frequency, respectively. It provides practical examples for General Class operators on the **20m** and **40m** bands, such as setting a VFO to 14.226 MHz for USB on 20m or 7.178 MHz for LSB on 40m, to maintain a safe margin from band edges. The resource emphasizes the critical importance of staying within allocated band limits to prevent out-of-band emissions, particularly when operating close to band edges. It includes relevant excerpts from **FCC Regulation Part 97**, specifically section 97.307, which details emission standards, necessary bandwidth, and spurious emission attenuation requirements. The text explains that unused sidebands are considered spurious emissions and notes that modern HF equipment typically exceeds the 43 dB spurious emission reduction standard, often achieving 60 dB or more.

This article explores the role of velocity factor (VF) in calculating stub lengths for VHF/UHF Baluns. It clarifies misconceptions about VF's relevance, distinguishing between coaxial cable interior fields and external stub fields. Practical examples, such as the Pawsey Stub and Coaxial Cable Balun, are analyzed alongside experimental findings. The results reveal that traditional VF adjustments are unnecessary for stubs with external fields but critical for internal coaxial applications. Historical and theoretical insights provide a comprehensive perspective for antenna enthusiasts and designers.

This page provides information on how amateur radio, or 'Ham' radio, is used by the yachting and small boat community for communication and weather information. It explains the global operation of amateur radio, regulations within the U.S., and the role of the American Radio Relay League (ARRL) in licensing and training. The page also highlights maritime 'nets' where Hams exchange weather reports, using voice and digital modes. It encourages establishing webpages for nets and mentions the MAROB and SKYWARN Programs for marine observation and severe weather reporting. The content is useful for hams interested in maritime communications and weather reporting.

Learn how to easily convert between different units like dBu, dBm, W, mW, V, and uV with the dBCalc application. This small windows program allows ham radio operators to quickly check conversions using input and output resistance. It's a useful tool for anyone dealing with electronic measurements and calculations. Best of all, dBCalc is free to use, making it a convenient solution for amateur radio enthusiasts. This tool simplifies complex conversions and helps hams optimize their equipment setup.

This page provides a detailed review of the ZB-4, 4 Band CW QRP Transceiver designed for QRP ham radio operations. It includes information on features, performance, and user experience with the ZB-4. The review aims to assist hams in making informed decisions about this transceiver model, highlighting its strengths and potential drawbacks.

Learn how to enhance your 160 meter reception by building and using a custom band pass filter. Discover how this filter can reduce interference from strong AM broadcast signals, improving the overall performance of your receiver. Find out about the challenges of creating a filter that balances signal loss and attenuation at specific frequencies, and how it can benefit hams operating near powerful transmitters. Whether you're experiencing IMD issues or looking to optimize your 160 meter setup, this article provides practical insights and solutions for ham radio operators.

Ham Satting is a multi-platform application developed by A46UNX (Yousuf AL Balushi) for amateur radio satellite tracking. It offers real-time visualization of ISS and amateur satellites on an interactive map, along with detailed pass predictions including AOS, LOS, duration, azimuth, and elevation data. The app provides a timeline view for multiple passes and smart notifications for upcoming passes, with options to add to a calendar. Key features include QSO logging to a local database with filtering, searching, exporting, and emailing capabilities. It also supports location mapping to display QTH and current locations, tracking grid squares. A notable feature is the SSTV decoder, which supports Robot 36/72, Scottie, Martin, and PD modes with manual fine-tuning. Ham Satting is available for iOS, macOS, and Android, with BETA versions for Windows and Linux. The developer, A46UNX, started his ham radio journey in November 2024 as a member of The Royal Omani Amateur Radio Society (ROARS).

This page contains detailed notes on repairing and aligning the Kenwood TS-440S HF radio. The author shares their experience repairing several TS-440S radios, highlighting common issues and repair techniques. The page also discusses parts availability, modifications, and the radio's performance for digital modes like FT8 and JT65. Aimed at ham radio operators interested in repairing and maintaining vintage HF radios, this page provides valuable insights and tips for working on the Kenwood TS-440S.

Learn how an experienced ham radio operator rebuilt his trap dipole antenna for 30, 40, and 80 meters after a storm damage. Discover the process of upgrading to a short trap dipole for 40, 80, and 160 meters using double-wound traps made from RG-58 coax. Follow along for construction details and tips on building this unique classi.

Learn how to enhance the performance of your Diamond V2000A antenna by optimizing the length of the radials. Discover a cost-effective method to create improved radials using simple materials like aluminum tubes and bolts. Explore the benefits of this modification for 6m band, unlocking triband capabilities and better SWR. Find out how a ham radio operator from Europe successfully upgraded their V2000 antenna and achieved impressive results. Save money by DIY-ing your radial enhancements instead of purchasing expensive replacements.

The FARPN Federated Amateur Radio Packet Network Wiki is a valuable resource for hams looking to learn more about packet radio networks. The wiki provides documentation, user tools, and site tools to help users navigate and utilize the network effectively. Whether you are a seasoned ham radio operator or just starting out, the FARPN Wiki offers a wealth of resources to enhance your experience with packet radio. Explore the wiki to discover more about FARPN and how you can make the most of this network for your amateur radio communication needs.

Learn how to build a VFO controller based on the Si5351 for ham radio operators. This controller consists of a PIC16F1825 and OLED SSD1306 display, with clock outputs for Tx, Rx, and IF frequencies. Features include calibration, RIT function, and the ability to tune frequencies separately. With step-by-step instructions and schematics, you can easily create your own VFO controller for your amateur radio setup.

Over 100 FCC districts are analyzed by this resource, providing a predictive database for amateur radio vanity callsign assignments. The system simulates the FCC's application process, calculating the probability of assignment for specific callsigns, such as KD3Q at 94% or N9QC at 97.8%. Data is meticulously organized by FCC district, detailing available, pending, and upcoming callsigns, alongside those currently blocked by renewal or other FCC administrative actions. This allows hams to gauge their chances of securing a desired callsign. The database presents specific application entries, including the date entered, receipt date, process date, the applicant's current callsign, and the vanity callsigns they have applied for. Each entry facilitates examination of predicted outcomes, which categorize potential assignments as assigned, competitive, non-assigned, unneeded, curable, or unknown status. For instance, an application for K7DM clearly shows multiple applicants, indicating a highly competitive assignment scenario. This tool is particularly useful for those seeking a **short callsign** or a **1x2, 2x1, 2x2, 1x3, 2x3, 3x1, 3x2, or 3x3 callsign** that aligns with personal preferences or contest aspirations. It provides a clear, data-driven perspective on the likelihood of obtaining a specific vanity callsign.

The QRH Terminal provides hams with a useful tool for accessing ham radio cluster network and integrates with QRZ.com, HamQTH.com, and other ham radio related websites. Compatible with Windows 11, Win 10. Free version offer some limited functionalities.

This resource presents a non-rigorous evaluation of the front-to-back (F/B) ratio of short Beverage antennas, specifically designed for low-band operation on frequencies such as 160, 80, 40, and 30 meters. The author, VE1ZAC, details the methodology used to measure the F/B ratio, which involves using a Millen Grid Dip Oscillator as a portable signal source. Measurements were taken by switching the antenna direction and recording S Meter and preamp readings to derive gain numbers. The document discusses the challenges faced in achieving accurate measurements and the assumptions made during the process, such as the calibration of S Meter units at 6 dB. This evaluation is particularly relevant for amateur radio operators interested in antenna performance on low bands.

Established in 2018, the Long Island CW Club aims to revitalize Morse Code (CW) usage among amateur radio operators. Despite the FCC's removal of CW as a licensing requirement, the club observes a growing interest in learning and mastering the code. Through online video conferencing, the club offers CW training classes catering to various skill levels, fostering a vibrant community of enthusiasts engaged in diverse ham radio activities worldwide.

This article discusses a high performance, 7MHz, 5 watt SSB rig, the Daylight Radio, an all-analog radio design from the 1980s that includes a full circuit diagram, IMD NR60 calculations, QER crystal filter, bandpass filter, receiver portion, and more. The author explores the design, components, and functionality of this analog radio for hams interested in vintage or homebrew radio projects.

Learn how to create a USB Keyer for PowerSDR to enhance your CW experience. This article provides a step-by-step guide using affordable materials like a USB to TTL Module (FT232RTL) and a Keyer iambic. The tutorial includes a detailed wiring diagram and instructions for configuring the Keyer in the PowerSDR menu. The author also shares a helpful video demonstration to ensure smooth operation. Whether you're a seasoned ham operator or new to CW, this DIY project can improve your radio setup. Follow these instructions to build your USB Keyer and elevate your PowerSDR experience.

The page provides a collection of modifications and upgrades for the Kenwood TS440 transceiver. Hams looking to enhance the performance or features of their Kenwood TS440 will find valuable information and instructions here. The site offers a range of mods for various amateur radio equipment, catering to a global audience of radio enthusiasts. Visitors can easily navigate to other related pages on modifications for different radio models, as well as general information on CB and ham radios.

This page provides a detailed comparison between the Zero Five and Gap Titan ham radio antennas. The author shares their personal experience with both antennas, highlighting pros and cons for each. They discuss aspects such as ease of assembly, customer service, tuning capabilities, performance on different bands, and the need for grounding and tuning. The comparison aims to help readers make an informed decision on choosing the best antenna for their needs, based on real-world usage scenarios and feedback.

Twenty 1-watt carbon film resistors are configured in parallel to construct a 50-ohm **dummy load** for amateur radio applications. The design incorporates a heatsink for thermal dissipation and an **SO-239 connector** for RF input, making it suitable for QRP operations. This budget-friendly project details component selection, soldering techniques, and mounting procedures, achieving a continuous power rating of 10 watts and intermittent handling of up to 100 watts across HF and VHF frequency ranges. The resource provides a step-by-step guide for assembly. This construction offers an economical solution for essential shack tasks such as antenna tuning, transmitter testing, and SWR meter calibration without radiating an RF signal. The utilization of readily available components significantly reduces the overall build cost compared to commercial alternatives, providing radio amateurs with a functional and reliable test accessory. While specific VSWR measurements are not provided, the design prioritizes practical utility for low-power transceiver diagnostics and general RF experimentation.

This page by Arctic Peak provides a detailed explanation on how to use quarter-wave transmission lines as impedance transformers in ham radio antenna work. It explains how to match impedance values by connecting them with a λ/4 transmission line. The page also offers guidance on constructing your own transmission lines with specific impedance requirements, along with a calculator to determine the quarter wave length based on velocity factor and frequency. Useful for hams looking to optimize antenna performance and match transmission line impedance effectively.

The Kenwood TS-440S operates across HF bands with a frequency range of 10 MHz to 30 MHz, featuring SSB, CW, and FM modes. It supports various modifications for improved performance, including circuit enhancements and software updates. Users can access detailed diagrams and troubleshooting guides to optimize their setup. The transceiver's architecture allows for easy integration with external devices, enhancing its versatility in the field. Practical applications include participation in DXing and contesting, where the TS-440S's capabilities can be fully utilized. Operators have reported significant improvements in signal clarity and reception after implementing recommended mods. Comparisons with other HF transceivers highlight the TS-440S's reliability and adaptability, making it a preferred choice among seasoned operators. Resources for power supplies, antennas, and additional accessories are also available, ensuring a comprehensive support system for users aiming to maximize their station's potential.

Provides access to a robust DX cluster node, G6NHU-2, running DX Spider software, which facilitates real-time amateur radio contact spotting across HF bands. This service is engineered for high reliability and low latency, ensuring rapid dissemination of DX spots from a global network of interconnected nodes. It features multiple redundant links to prevent data loss and maintain continuous operation, even if individual connections drop. The cluster integrates directly with the Reverse Beacon Network (RBN), allowing users to enable or disable skimmer spots for specific modes like CW, RTTY, FT8, and FT4. It also offers an extensive one-year spot history, significantly longer than most other DX clusters, which typically retain only a month of data. The node supports various lookup commands for callsign information, beam headings, QSL routing, and FCC database lookups, enhancing operational efficiency for DXers and contesters. Additionally, it permits self-spotting, a feature increasingly relevant in modern contests, and provides detailed instructions for connecting popular logging software such as N1MM+, HamRadioDeluxe, MacLoggerDX, LOG4OM2, Logger32, and N3FJP's Amateur Contact Log.

This page provides a detailed guide on the J-pole antenna, an end-fed half-wave antenna matched to the feedline by a quarter-wave transmission line stub. It covers the characteristics, construction materials, feeding options, and mounting considerations for optimal performance. The information is useful for hams or amateur radio operators looking to build and set up a J-pole antenna for improved transmission and reception.

Testing IdeeTron Lorank8 for LoRaWAN with ham radio transmissions. Assessing compatibility, interference, and planning permanent setup. Follow the experimentation and integration into the Almelo Community page

Learn how to set up N1MM Logger+ software for your FT-991 transceiver. This article provides a step-by-step guide on configuring your transceiver settings to work seamlessly with the N1MM Logger+ program. By following these instructions, hams can enhance their contesting and logging experience with improved efficiency and accuracy. Whether you are a beginner or an experienced operator, this tutorial will help you optimize your FT-991 setup for contesting and general ham radio operations.

Explore a variety of ATV projects and resources for ham radio operators on ATV-Projects.com. Find helpful guides, tutorials, and tips to enhance your amateur radio experience. From antenna construction to equipment reviews, this site offers valuable information for hams looking to expand their knowledge and skills. Whether you're a beginner or seasoned operator, ATV Projects has something to offer for all levels of expertise.

HamRadioSchool.com combines traditional textbook learning with modern online tools. Their approach focuses on building conceptual understanding rather than just memorizing answers. The site offers structured courses with clear learning paths, video tutorials, and interactive quizzes. Their materials are particularly strong on electronics theory fundamentals. The site also maintains an active blog with tips for new operators and explanations of confusing exam topics.

This web page offers an online antenna designer tool for hams to calculate the dimensions needed to construct a J Pole antenna for any desired frequency. The J Pole antenna is a simplified version of the Slim Jim antenna, radiating and receiving signals in an omni-directional pattern. It does not require a ground plane, making it suitable for indoor mounting. With the ability to be made from common household wiring, this antenna performs well for both receiving and transmitting purposes. The calculator is based on radio waves traveling at the speed of light and provides metrics in both imperial and metric units.

This page discusses the potential risks and safety concerns related to antenna installations for ham radio operators. It emphasizes the importance of following electrical codes and regulations to prevent property damage, injuries, or even loss of life. The author shares personal experiences and advises against using trees for antenna support near power lines. The content serves as a cautionary resource for hams planning antenna setups to ensure safety and compliance with regulations.

The article details how to eliminate Radio Frequency Interference (RFI) from the Behringer HA400 headphone amplifier when used in ham radio setups. While the HA400 is praised for its quality and affordability, it was not designed for RF environments, causing distortion when used with a 500-watt radio station. Initial attempts using clamp-on ferrites on the headphone and power cables only partially resolved the issue. Upon opening the unit, the author discovered the circuit lacked RF bypassing components. The solution involved installing 0.1μF (104) capacitors at key points in the circuit: the power supply input, audio circuits, and op amp inputs. This modification, combined with the external ferrites, completely eliminated the RFI problem, making the unit suitable for ham radio operations.

A modern, free online study tool for US amateur radio exams. It provides current NCVEC question pools for all license classes (Technician, General, and Extra). Features include a smart practice mode that tracks your weak areas and provides detailed explanations to help you pass faster.

Off Grid Ham discusses the benefits of mobile ham radio operation in addition to fixed or semi-fixed base stations. The article highlights the challenges of antenna placement on vehicles, emphasizing the importance of a good ground plane for optimal performance. Tradeoffs between performance and appearance are inevitable, especially with modern vehicles that have plastic body panels. Bonding the coax shield to the car frame is often necessary to establish a good ground plane. Mobile ham radio operation is a valuable option that fills in the gaps left by fixed stations, offering flexibility and convenience for hams on the go.

The Nashua Area Radio Society is a group of New England Ham Radio enthusiasts with a wide range of interests. Amherst, NH.

The page features a spreadsheet that calculates power in watt and dBm based on voltage and impedance, power in dBm with a given power and impedance, voltage in millivolts with a given power and impedance, and more. It also converts between millivolt, microvolt, volt, watt, and milliwatt. Useful for hams looking to accurately calculate power and voltage values for radio equipment. Last updated in December 2014.

The **5-Port 12 Volt DC Power Strip Kit (Rev 4)** offers a practical solution for managing shack power distribution, providing one input and five fused outputs. All connections utilize the ubiquitous Anderson PowerPole connectors, a standard for many amateur radio operators, ensuring a clean, organized, and safe way to power multiple 12 VDC transceivers and accessories from a single source. This design mitigates the common issue of tangled wires and overloaded connections in a typical ham shack. Rated for a maximum current of 20 Amps at 12 VDC, the strip incorporates an integrated LED to indicate when external power is applied. Each output is individually fused, a critical safety feature that protects connected equipment from overcurrent conditions without affecting other devices on the strip. This level of protection is essential for preserving sensitive radio gear during operation. Assembly requires basic soldering skills and hand tools, with a high-power soldering iron and wide chisel tip specifically recommended for best results. The kit's compact dimensions of 4.13" x 1.78" allow for flexible mounting via screw holes, making it suitable for various shack configurations and portable operations.

Learn how to enhance your Drake R-4B ham radio receiver by adding a panadapter. Follow along as the author shares their journey of becoming a ham radio operator and restoring vintage radios. Discover how a panadapter can help you visualize a wider frequency range, improving signal detection and communication. Whether you're a seasoned ham or just starting out, this guide provides valuable insights and practical tips for maximizing your radio experience.

This post discusses the Norcal 2N2/XX CW transceiver kit and provides suggestions for minor mods and parts substitutions. The author shares their experience assembling the kit and highlights the simplicity and joy of operating a QRP CW transceiver. The post also includes images and a list of recommended modifications towards the end. If you own or are interested in acquiring a Norcal 2N2/XX kit, this post offers valuable insights and recommendations to enhance your experience as a ham radio operator.

This page offers an online tool to calculate the dimensions for a quarter wave antenna based on a specified frequency. It helps hams design antennas for optimal reception and transmission properties, using 1/4 wavelength elements. The calculator ensures a matching impedance of 50 Ohm without the need for additional components. The page is useful for amateur radio operators looking to build efficient antennas for their radio communication setup.

The **Radio Scouting** initiative integrates amateur radio with Scouting activities, primarily through the annual Jamboree on the Air (JOTA) event, which engages over 700,000 Scouts globally each third weekend of October. This program introduces Scouts to radio technology and communication, leveraging the K2BSA Amateur Radio Association's resources. It outlines a progression from initial exposure at JOTA to more structured learning, including the Radio Merit Badge, which approximately 7,000 Scouts earn annually. Following the introductory JOTA experience and the Radio Merit Badge, the program encourages further engagement, such as achieving Morse Code proficiency and obtaining an amateur radio license, recognized through specific uniform awards. This structured approach aims to foster sustained interest in amateur radio among youth, providing a clear pathway for skill development and participation in the ham radio community.

Tar Heel Designs offers a range of quality products for ham radio operators, proudly made in America. Watch a raw, unedited product video from the 2025 Orlando Hamfest. For more information or to shop online, visit their website powered by eDirectHost, an info & ecommerce website builder. Find everything you need for your ham radio hobby in one convenient location.

World Radiosport Team Championship, United Kingdom 2026 official web site.

Learn how to eliminate RF interference from your Behringer HA400 headphone amplifier for a better listening experience. Discover the simple modifications needed to prevent distortion caused by RF in your audio setup. Follow the step-by-step instructions provided by WB5NHL Ham Radio to improve the performance of your headphone amplifier in ham radio activities.

A website deticated to Boathancors, with lots of pictures of some of the most popular ol tube radios from Hallicrafters, Hammarlund, Heathkit, Lafayette, National, Zenith and some projects. Boatanchor is amateur radio slang for heavy old tube radio equipment. Originally derogatory, the term is now used affectionately. Seeing an old set working like new after careful repair, cleaning, and alignment gives one great satisfaction.

The 52 Week Ham Radio Challenge offers hams a year-long series of 52 challenges to test and improve their skills. Created by Fabian Kurz, DJ5CW, this project includes bonus challenges that can be substituted for missed or failed tasks. The challenges cover a range of topics and activities related to ham radio operation, providing a fun and educational way for hams to enhance their knowledge and expertise. Whether you are a beginner or an experienced operator, this challenge is designed to engage and motivate ham radio enthusiasts throughout the year.

BC Amateur Radio South Of The Fraser. Coastal Ham Radio Club is for the amateur radio enthusiast. We are a group of local British Columbia amateurs who wish to socialize, learn, share and promote the hobby.

Learn how to connect your AllStar Node to 44Net in this blog post. Discover step-by-step instructions and tips to make the process easier for hams interested in expanding their networks. Find out how to improve your communication capabilities and enhance your overall ham radio experience with this helpful guide.