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  • Caribbean tour by LA5IIA

    Further to the PJ7/LA5IIA news announced yesterday, we now have a full schedule of Caribbean operations by Johnny, LA5IIA, and it is as follows: FS/LA5IIA – St Martin: July 14-17. VP2EIA – Anguilla: July 17-20. HP1/LA5IIA – Panama: July 20-24. PJ7/LA5IIA – St Maarten: July 24-28. QRV holiday-style on 60, 30, 20, 17, 15, 12, […] This post appeared first on:​ DX-World Want to know more about it? Read More

  • Contesting 101: Basic Antennas for Contesting

    Contesting 101: Basic Antennas for Contesting

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    Editor’s Note: OnAllBands is pleased to post a series of articles written by accomplished amateur radio contester and DX Engineering customer/technical support specialist Kirk Pickering, K4RO. The articles, originally published in the National Contest Journal from 2008-2011 and updated with current information, offer valuable insights for both contesters new and old.

    ***

    I was chatting with fellow contester and WRTC competitor W4PA, and I asked him if he had any good ideas for the Contesting 101 column. Scott felt that developing a basic knowledge about antenna designs and beaming target areas was a major turning point in his contesting career. He recalled the time he set up phased verticals for 80 meters for Europe and realized just how important a role antennas can play in contesting success.

    My own “aha moment” came after I installed my first Beverage receiving antenna. I simply could not believe that a whole new layer of stations to work was available, simply for the cost of a few hundred feet of wire and some grunt time in the woods with a compass.

    beverage feed line antenna transformer
    The DX Engineering Beverage Antenna System is one of several Beverage antennas available at DX Engineering. (Image/DX Engineering)

    There are hundreds of books and thousands of articles written about antenna design and construction, and I recommend that you try to learn as much as you can. What I will attempt to do in this article is explain some basic fundamentals about antenna selection and design specifically for contest operating.

    Contests Are Different

    The antenna needs of the contest operator are different than that of the casual rag-chewer or even the serious DX chaser. Because contesting is a race against the clock, we need to be able to adapt to varying conditions and situations very quickly. While the DXer is usually only working one specific station in one specific direction, the contest operator may have multiple simultaneous callers from many different directions. While the rag-chewer has plenty of time to crank the roller inductor on his tuner for maximum output on a single frequency, the contester is constantly changing frequencies–and even bands–and does not have the luxury of time to spend tuning anything.

    Contesters need to have an above-average signal into the major population centers when bands are open yet still be flexible enough to be able to pick up the rare double multiplier on the difficult paths and bands. Some big contest stations may appear to have “too many antennas,” but chances are that there is a specific reason for each one. The old adage that “you can’t have too many antennas” is probably true, with two caveats:

    1. Antennas can interact with each other and actually degrade performance if not carefully engineered and located.
    2. One must be able to effectively use all of the available antennas.

    An array of sixteen A/B switches might be pretty confusing to decipher on the second night of a DX contest, especially for guest operators.

    Target Areas

    A good place to begin is to understand the concept of target areas in contesting. While actual target area directions vary considerably depending on your geographic location, the concept is the same. The contester needs to focus first on the primary target areas for the contest in mind. For DX contests, this usually means EU (or NA if you are in EU). For North American contests, this usually means the U.S. east coast and California. In order to rack up a good QSO number, it is essential to understand where the target areas are located and to have a good signal into them.

    From the east coast of North America, for example, DX contests rule, and Europe dominates the QSO count. That means that folks who want to do well in DX contests should start their efforts by getting a big signal into Europe on as many bands as possible. For folks on the west coast of North America, Japan provides the majority of QSOs in a DX contest (although this trend is downward). Therefore, DX contesters on the west coast would be wise to construct effective antennas for JA.

    For folks in the middle of the country, both directions are equally important. Domestic contests tend to favor the west coast, especially when the high bands are open. Their primary target area is the east coast, so it makes sense to cover the east direction first. In southern North America, it is important to have effective antennas for both the east coast and west coast. The point is that you want antennas that are effective into the areas where the operators are. For example, if you live in Tennessee and the only antenna that you can install is a dipole for 40 meters, orient it NW/SE to maximize your signal into the NE quadrant. (Remember that a dipole radiates strongest perpendicular to the wire.) There are simply more stations to be worked toward the NE than the NW from TN, so it makes more sense to cover that area first. Since a dipole radiates in two directions in a figure-eight pattern, you will also have a good signal to the SW. No single antenna is going to work effectively in all directions, and often two or more directions are needed simultaneously.

    For starters, a good approach is to choose your two most important directions and start by building antennas optimized for those directions. Even simple antennas have directions where they are strong (lobes) and directions where they are weak (nulls). When you know where the nulls and lobes are located, you can take advantage of this fact by using one antenna that is oriented specifically to place its lobes where the other antenna has nulls.

    Some Examples

    We mentioned the dipole above and how it radiates in two directions broadside to the wire. Keeping it simple, a great idea would be to add one more dipole and orient it perpendicular to the first one. That would give us the advantage of having two sets of directions to choose from. The null off of the end of a dipole can greatly attenuate signals, resulting in differences of 20-30 dB from another oriented perpendicular to it. That’s like having a very large amplifier turned on when switching directions. Even more importantly, it works on both transmit and receive. Add a vertical antenna for the lower angle signals, and you can enjoy considerable diversity in both azimuth and elevation from three simple antennas.

    Be sure to include some kind of antenna switch so you can quickly select the best antenna for the current QSO.

    4o3a antenna genius switch
    The 4O3A Antenna Genius 8X2 Smart Antenna Switch is one of many switches available at DX Engineering. (Image/4O3A)

    Note that none of the antennas mentioned have any real gain over a theoretical reference antenna, but they have considerable gain over each other in different directions. Such a combination of simple antennas allows greater coverage in more directions than any single antenna possibly could.

    Getting Some Gain

    One amazing thing about antennas is that you can modify their performance by placing other antenna elements in close proximity. Using a vertical antenna as an example, the typical shape of the antenna’s response (looking down from the sky at the azimuth pattern) is a circle. By simply placing another vertical element a specific distance away, we can “squeeze” that circle into another shape, like a cardioid (heart-shaped) pattern. It’s like squeezing a balloon–we take energy away from one direction and squeeze the pattern into a new direction of our choosing. We can orient the antenna in such a way that most of our energy is being radiated in the desired direction (toward the population centers). Not only are we louder in the desired direction, but we can hear much better as well. Signals from all other directions are attenuated, while the desired direction has some gain.

    Here is another example. After using nothing but wire dipoles and single vertical antennas for 40 meters, I wanted something better into Europe. I had loaded the boom of my tri-bander with an omega match. The rotatable boom dipole was great for a lot of multipliers, and it was my best 40 meter antenna to date. Unfortunately, I was still feeling weak into Europe. Most notably, anyone locally with a “shorty-forty” Yagi was cleaning my clock on 40M in DX contests. Plus, the QRM from everything west of me was deafening when trying to hear Europe. After a few different experiments with different designs, I put up a two-element wire beam fixed on Europe for 40 meters at about 70 feet. Once I got the ropes in the trees and the geometry correct, I had an antenna that really made a difference. For the first time, I could actually run European stations on 40 meters (even if somewhat high in the band). I was no longer always the last guy through in the pileups.

    While I’d rather have a real rotatable 40M beam, the second wire element added to a simple dipole really made a believer out of me. A simple two-element wire beam is not that hard to construct, especially for the higher bands. You can find simple designs in publications such as the ARRL Antenna Book and ARRL Handbook.

    The post Contesting 101: Basic Antennas for Contesting appeared first on OnAllBands.

    OnAllBands

  • C6AUB – Bahamas

    Philippe, EA4NF will be active on FM LEO satellites from the Bahamas under the Callsign C6AUB during August 19 to 23, 2026. He will be operating in full-duplex mode using a portable transceiver equipped with his standard Arrow antenna and whip antenna. QSL via LoTW. Keep an eye on Philippe’s X feed for further updates […] This post appeared first on:​ DX-World Want to know more about it? Read More

  • VK9WX – Willis Island

    [AUDIO] – Sands has been active last few days mainly on 15m SSB. Here’s a recording of his signal courtesy of Marco, FS4WBS.   [JULY 15] – by Sands, VK9WX (VK4WXW). I am back on Willis Island for the 2026 Winter tour. Will update the QRZ page in a few days (and here on DX-World). […] This post appeared first on:​ DX-World Want to know more about it? Read More

  • HAMgpt Launches as a Personal AI Copilot Built Specifically for Amateur Radio

    HAMgpt Launches as a Personal AI Copilot Built Specifically for Amateur Radio

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    New platform combines an operator’s license, station, location and live band conditions to answer a practical question: “What can I do with my radio today?”

    July 2026 — HAMgpt, a new AI assistant created specifically for amateur radio operators, is now open to the public at hamgpt.co.

    Unlike a general-purpose chatbot, HAMgpt is built around the real operating situation of each ham. It can take into account the operator’s license class, country, grid square, radios, antennas and operating history, then combine that station profile with live propagation, space weather, DX activity and current on-air conditions.

    Its main purpose is to answer one deceptively simple question:

    What can I do with my radio today?

    Amateur radio offers an enormous range of possibilities: local repeaters, HF DX, satellites, digital modes, POTA, emergency communications, antenna building, contesting and experimentation. For many newly licensed operators, however, the first experience is much less exciting. They pass the exam, buy an HT or an entry-level rig, turn it on, hear static or silence, and do not know what to try next.

    HAMgpt was built to help with that exact moment.

    “Many new hams do not leave the hobby because they lack information,” said Rodrigo Vazquez, AK6FP / LU6ERV, creator of HAMgpt. “They leave because nobody tells them what to actually do with the radio in their hand. HAMgpt is not trying to out-explain a general chatbot. It is trying to be the reason someone gets on the air instead of putting the radio back in the box.”

    A Personal Digital Elmer

    In amateur radio, an experienced operator who helps others learn the hobby is traditionally known as an Elmer. HAMgpt is designed to work like a personal digital Elmer that already knows the operator’s station.

    Users can save their license class, location, exact radio models and antennas. HAMgpt reuses that information across conversations, so the operator does not need to explain the same setup every time. That context changes the quality of the answer.

    A general explanation of repeaters may be technically correct, but a new ham with an HT usually needs something much more practical: which nearby repeater is likely to be reachable, what offset and tone to use, how to program that specific radio, and what to say when making the first call.

    An HF operator may not need another generic explanation of propagation. The useful answer is which bands are active right now, which ones are covered by the station’s antenna, what paths are currently open, and where it may be worth calling CQ.

    HAMgpt is designed to connect those pieces.

    Personalized to the Operator and the Station

    HAMgpt uses a persistent station profile that can include:

    • License class and country.
    • Maidenhead grid locator.
    • Multiple radios, including exact makes and models.
    • Multiple antennas and the bands they cover.
    • Operating history and imported logbook data.

    Every answer can be adjusted to the user’s actual station and legal privileges.

    For example, HAMgpt can help:

    • Identify repeaters that may realistically be worked with a particular HT or mobile rig.
    • Suggest HF bands based on live conditions and the antennas installed at the station.
    • Recommend satellite passes that fit the operator’s equipment.
    • Find nearby POTA parks to activate.
    • Explain how to configure a specific rig for FT8, Winlink, APRS or satellite work.
    • Provide antenna dimensions and construction guidance for the operator’s target band and available space.

    This is what separates HAMgpt from a generic ham-radio Q&A system. The goal is not merely to answer, “What is a repeater?” or “What is an inverted-V?” The goal is to answer, “What should I try with my station right now?”

    Powered by Live Data from DXLook

    HAMgpt is the sister project of DXLook, the live amateur radio propagation and activity platform also developed by Vazquez. The two projects divide the problem clearly:

    • DXLook shows what is happening on the air right now.
    • HAMgpt helps an individual operator decide what to do about it.

    HAMgpt uses DXLook’s live data services for band conditions, propagation, space weather and on-air activity. This allows it to go beyond textbook answers about how a band normally behaves.

    Instead of saying that 10 meters can be good for DX when conditions improve, HAMgpt can use current data to explain whether 10 meters is active now, what paths appear open, and whether the operator’s own antenna and rig are suitable for taking advantage of it.

    DXLook acts as the live sensor layer. HAMgpt acts as the personal decision and guidance layer on top of it.

    Designed for Trust in a Regulated Hobby

    Accuracy matters in any technical field, but amateur radio has an additional complication: it is a regulated service.

    Wrong information about frequency privileges, transmit power, band plans, repeater settings or operating rules can cause more than confusion. It can put an operator outside the privileges of the license.

    HAMgpt is therefore built around a “deterministic-first” approach.

    Critical information such as license privileges, official exam questions, live band data and verified technical values is obtained from structured tools, official sources and rule-based systems whenever possible. The AI reasoning layer is used where interpretation is actually useful, such as troubleshooting a station, explaining an analyzer reading, planning an antenna build or combining several pieces of information into an operating recommendation.

    The product also applies multiple accuracy checks intended to prevent invented frequencies, incorrect tone or offset values, and advice outside the operator’s license privileges.

    License class is treated as a hard constraint throughout the product, not as an optional profile detail.

    What HAMgpt Can Do Today

    HAMgpt is already live with a broad set of features intended for both new and experienced operators.

    Live operating guidance

    HAMgpt provides a live view of band conditions, space weather and recent DX activity. Recommendations can be filtered through the operator’s own radios and antennas, helping identify which bands are not only open, but actually usable from that station.

    It can also provide:

    • Repeater suggestions based on location and equipment.
    • Satellite pass predictions with direction, elevation and timing.
    • Nearby POTA parks for activation.
    • Local net and APRS activity.
    • Band-opening and solar-flare notifications.

    Antenna design and building help

    HAMgpt includes a complete antenna-building layer rather than acting only as a calculator.

    Operators can request build sheets for:

    • Dipoles.
    • Inverted-V antennas.
    • Verticals.
    • Yagis and beam antennas.
    • Moxon antennas.
    • Magnetic loops.

    The system can provide element lengths, spacing, boom dimensions, feed and matching options, expected performance, material suggestions and safety information. For magnetic loops, it can also calculate tuning capacitance, expected bandwidth, efficiency and capacitor voltage requirements.

    To-scale diagrams can be generated directly in the chat.

    HAMgpt can also help with practical construction tasks such as winding a choke balun, building a 49:1 transformer, choosing wire or tubing, weatherproofing feed points, and trimming an antenna to resonance.

    NanoVNA and image analysis

    Operators can upload a NanoVNA .s1p file and receive an SWR-versus-frequency plot showing the resonant point, usable bandwidth and the 2:1 SWR line, together with a plain-language explanation of what the sweep means.

    HAMgpt can also analyze photos of:

    • Radio displays.
    • SWR meters.
    • Antenna analyzers.
    • Smith charts.
    • Antenna installations.
    • Station wiring.

    For exact measurements, a NanoVNA data file remains the preferred source, but photo analysis can be useful for identifying what an instrument or rig display is showing.

    Radio-specific help

    HAMgpt recognizes a growing range of popular rigs from manufacturers such as Yaesu, Icom, Kenwood, Elecraft, FlexRadio, Xiegu, Apache Labs and others.

    Operators can ask model-specific questions about setup, features and common operating problems, including:

    • Menu and operating setup.
    • Digital-mode configuration.
    • CAT, PTT and audio troubleshooting.
    • Tuner and antenna compatibility.
    • Satellite and full-duplex capability.
    • Common problems and error conditions.
    • Help selecting a rig for a particular operating goal.

    Winlink Express setup

    HAMgpt includes dedicated step-by-step help for Winlink Express, one of the most useful but sometimes difficult pieces of amateur radio software to configure.

    It can guide an operator through:

    • Account creation and registration.
    • VARA HF and VARA FM setup.
    • Digirig, SignaLink and CAT cable connections.
    • COM ports, PTT and audio levels.
    • Sending the first message.
    • Troubleshooting failed connections.

    Learning and exam preparation

    HAMgpt includes the official NCVEC practice question pools for all three U.S. amateur radio license classes:

    • Technician.
    • General.
    • Amateur Extra.

    The quiz system automatically selects the appropriate pool based on the operator’s current license, while still allowing the user to choose any exam level.

    Logbook and station history

    Operators can import an ADIF logbook and receive a summary of their own on-air activity.

    HAMgpt also keeps searchable conversation history, making it easier to return to previous antenna designs, setup instructions, troubleshooting sessions or operating plans.

    International and Multilingual Support

    HAMgpt is not designed as a U.S.-only system.

    It currently provides full license-class-aware support for operators in:

    • The United States.
    • Canada.
    • The United Kingdom.
    • Australia.
    • Japan.
    • Argentina.

    Guidance follows the relevant license classes, band plans and power limits for each supported country.

    HAMgpt can also help with reciprocal and temporary operating questions, including CEPT, IARP, visitor permits and call sign requirements while traveling.

    The assistant supports English, Spanish, Italian, Portuguese, French, German and additional languages, allowing operators to ask technical questions in the language they are most comfortable using.

    Built by a Working Ham

    HAMgpt and DXLook are independently built and operated by Rodrigo Vazquez, AK6FP / LU6ERV, an active amateur radio operator.

    The project grew from a simple observation: amateur radio does not suffer from a shortage of information.

    The hobby already has excellent manuals, databases, clubs, forums, videos, band-plan documents and specialist tools. The harder problem is turning all of that into a useful next step for one specific operator, using one specific radio and antenna, under current band conditions.

    “The rig someone owns, the antenna they installed, their license privileges, their grid and what the bands are doing right now all matter,” Vazquez said. “Without that context, an answer can be technically correct and still not help the operator get on the air.”

    Availability

    HAMgpt is available now at hamgpt.co.

    A free, ad-free tier is available with daily usage limits. HAMgpt Plus offers higher limits, additional live-data lookups and deeper personalization based on the operator’s station and logbook.

    There are no ads on either plan.

    About HAMgpt

    HAMgpt is a personal AI copilot for amateur radio operators. Instead of providing only generic explanations, it combines an operator’s license class, location, radios, antennas and logbook with live band conditions and on-air activity to provide practical, station-specific guidance.

    HAMgpt is the sister project of DXLook, a live amateur radio propagation and activity platform. Both products are built and operated by Rodrigo Vazquez, AK6FP / LU6ERV.

    Website: https://hamgpt.co
    DXLook: https://dxlook.com
    Press contact: qso@dxlook.com

    Source: HAMgpt

    ​ Amateur Radio Daily

  • N7NU/VP9 & VP9I – Bermuda

    From September 23-29, 2026, Lee N7NU, Ron WJ7R and Al K7AR will be active from Bermuda as N7NU/VP9. QRV on HF bands; CW, SSB & Digi. Participation in the CQWW DX RTTY contest as VP9I. QTH: VP9GE. QSL N7NU/VP9 via N7NU. This post appeared first on:​ DX-World Want to know more about it? Read More

  • Get High-Octane On-Air Thrills During the Brickyard 400 Special Operating Event

    Get High-Octane On-Air Thrills During the Brickyard 400 Special Operating Event

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    Nothing screams ham radio quite like NASCAR, right? Okay, maybe not. But that doesn’t mean the two can’t share the same road together (pun intended), and we can prove it to you.

    W9IMS will be hosting a special operating event running July 20 through July 26, 2026 (0000Z-2359Z, 3.840, 7.245, 14.245, 18.140) to honor the Brickyard 400 race at the Indianapolis Motor Speedway. Participation will get you a custom QSL card, something W9IMS does for every race held at the track. Make a QSO during each event and you’ll receive a certificate.

    If this is your first time participating in W9IMS events, you sadly won’t be able to get the certificate this year since the IndyCar Grand Prix and Indianapolis 500 operating events took place in May 2026.

    All the more reason to come back next year and get into the action, right?

    aerial view of a race track
    (Image/Public Domain)

    About W9IMS

    Formed by a group of hams who love the Indianapolis Motor Speedway, W9IMS became the track’s official amateur radio club in 2004. President and founder, David, K9RU, a former turn captain for the Associated Press on Turn 3, jumpstarted the group to merge his passion for motorsports and amateur radio.

    Over the course of their more than 20-year existence, W9IMS has conducted special events for these races:

    • Indianapolis 500
    • Brickyard 400
    • IndyCar Grand Prix
    • United States Grand Prix (2000-2007)
    • Indianapolis MotoGP (2008-2015)
    • Indianapolis Balloon Race (2009-2010)

    About the Brickyard 400

    The Brickyard 400 initially waved the checkered flag on August 6, 1994, marking the first time the Indianapolis Motor Speedway let stock car racing onto its historic track.

    Before that, the speedway almost exclusively hosted IndyCar racing. Its most prestigious race–the Indianapolis 500–has been held there every year since 1911. The track’s then-president, Tony George, was looking for a second premier race to host, and NASCAR wanted to capitalize on the popularity of the track to bring in new viewers.

    The event got its name from the track’s nickname “The Brickyard.” This is in honor of its original racing surface, which was made of more than three million bricks. While it’s primarily asphalt now, the 2.5-mile track still features a small strip of bricks past the finish line. The first Brickyard 400 drew more than 300,000 fans, with 86 drivers trying to qualify for the 43-car field.

    In almost no time, the race became one of NASCAR’s crown jewels, with one of the largest purses at just over $11 million. Even the qualifying races, which determined starting position in the actual race, drew large numbers of spectators.

    Future NASCAR Hall-of Famer Jeff Gordon was the first driver to take home the gold at the Brickyard 400. What’s more interesting is that of the 32 runs, 30 of them have been won by NASCAR Hall of Fame team owners. The exceptions were Ricky Rudd, who drove for his own independent team in 1997, and Jamie McMurray, who won for Earnhardt Ganassi Racing in 2010.

    race cars going around a track
    Brickyard 400 competitors from 2009. (Image/Brickyard 400 – 2009 by El Biffster | CC BY 2.0)

    The Brickyard 400 consistently drew hundreds of thousands of spectators until 2008, when controversy struck the track, marking what would become a slow decline in popularity for the event and stock car racing as a whole. This is when NASCAR introduced the “Car of Tomorrow,” which drastically changed car dynamics, shifting weight distribution and putting heavier loads on the right-side tires. Goodyear also developed a tire with compounds that, many racers felt, wore too easily and would break down much faster with the heavier stress put on them. The result was a longer race, as no driver wanted to push themselves and risk losing.

    Attendance began to decline, hitting its lowest point in 2017, when only 35,000 people showed up to watch the race. Fortunately, though, the event has started to rebound. Last year, 70,000 peopled watched from the grandstands. While that’s a far cry from its glory days, it’s a start in the right direction.

    The post Get High-Octane On-Air Thrills During the Brickyard 400 Special Operating Event appeared first on OnAllBands.

    OnAllBands

  • 7C8C – Gusung Toraja Island, OC-236

    A team from the Tipalayo DX Club will be active from Gusung Toraja, Celebes Coastal Islands (OC-236) as 7C8M during July 23-256, 2026. Participation in the IOTA contest, also QRV on other HF bands outside of contest,; CW, SSB & Digi. QSL via YB8BRI. This post appeared first on:​ DX-World Want to know more about it? Read More

  • BY1AA – Changshan Island, AS-158

    Team consisting of BA1GM, BD1IIJ, BD1RX, BG1DX, BH1LHS, BH3QBY and BI1TMQ will be active from Changshan Island, AS-158 as BY1AA during the IOTA contest (July 25-26). QRV on the main HF bands, and also some activity before the contest on WARC bands. Antennas: Spiderbeam, Inverted-V and 6m Yagi. QSL only via LoTW. This post appeared first on:​ DX-World Want to know more about it? Read More

  • TU5MM – Ivory Coast

    Fredy, F5HPE will be active from Motobe Village, Ivory Coast as TU5MM during July 16-22, 2026. QRV on 80-40-20-15-10m; SSB & FT8. QSL via H/c. This post appeared first on:​ DX-World Want to know more about it? Read More