Digital Mobile Radio (DMR) has become one of the most popular digital voice modes in amateur radio, providing hams with clear audio quality, expanded networking capabilities, and efficient use of radio spectrum. Originally developed for commercial and public safety communications, DMR has been widely adopted by the amateur radio community, creating a worldwide network of repeaters and users connected through the internet and RF links.

For a new amateur radio operator, DMR offers a modern communication experience that combines traditional radio operation with digital technology. Unlike analog FM, DMR converts your voice into a digital data stream before transmitting it over the air. This results in consistent audio quality throughout most of the coverage area, often eliminating the static and noise commonly heard on weak analog signals. In addition to voice communications, DMR supports text messaging, GPS location reporting, and user identification transmitted automatically with each transmission.

One of DMR's greatest strengths is its interconnected network of repeaters. Using concepts called Talkgroups, operators can communicate with hams across town, across the country, or around the world with the push of a button. A local repeater may provide access to statewide, regional, national, or worldwide talkgroups, allowing operators to join conversations based on their interests. Popular talkgroups exist for general conversation, emergency communications, technical discussions, special interest groups, and local amateur radio clubs.

Getting started with DMR is relatively affordable. Entry-level handheld radios from manufacturers such as AnyTone, TYT, Radioddity, and others provide access to DMR networks at a cost comparable to many analog handheld transceivers. While DMR radios require some initial programming, most local clubs and repeater groups provide codeplugs and setup assistance to help new users get on the air quickly. Once configured, operating a DMR radio is straightforward and opens the door to a vast digital communications community.

DMR also serves as an excellent introduction to modern digital communications concepts used throughout amateur radio. Operators learn about talkgroups, time slots, digital networking, repeater linking, hotspot operation, and Internet-RF integration. Many hams use personal hotspots to access DMR networks from home, allowing worldwide communications even when a local DMR repeater is not nearby.

Whether your goal is local club participation, long-distance conversations, emergency communications, or learning about digital technology, DMR offers a versatile and welcoming path into the digital side of amateur radio. Its combination of clear audio, worldwide connectivity, affordable equipment, and active user community has made DMR one of the fastest-growing and most widely used digital voice modes in the amateur radio hobby today.

For more information click on the Elmers page.

High-altitude ballooning has become an increasingly popular activity among amateur radio operators, combining radio communications, electronics, tracking technology, and atmospheric science into a single exciting project. By launching a weather balloon carrying a lightweight payload, radio amateurs can send a package to altitudes exceeding 100,000 feet, where it can travel hundreds of miles while transmitting its location, altitude, speed, and other telemetry data back to stations on the ground.

A basic balloon launch typically consists of a latex weather balloon filled with helium or hydrogen, a parachute for safe descent, and a payload suspended below. The payload often contains a GPS receiver, radio transmitter, batteries, and a microcontroller or single-board computer to collect and transmit data. Many first-time launches use compact, low-cost equipment weighing only a few ounces, while more advanced payloads may carry cameras, environmental sensors, and experimental communications systems.

Several tracking technologies are commonly used by amateur operators. APRS (Automatic Packet Reporting System) remains one of the most popular methods, allowing a balloon's position to be displayed in real time on online mapping systems. More recently, LoRa-based systems such as Meshtastic and custom telemetry transmitters have become popular due to their long range and low power consumption. Some groups also employ HF, VHF, UHF, or satellite-based tracking systems to maintain contact with the payload throughout the flight. These technologies allow chase teams and participants to follow the balloon from launch to recovery.

Balloon payloads can range from simple educational experiments to sophisticated scientific platforms. Entry-level payloads often include a GPS tracker and temperature sensor, while advanced projects may incorporate high-definition cameras, atmospheric pressure sensors, radiation detectors, image transmission systems, or amateur television (ATV) equipment. Amateur radio operators frequently use balloon launches as a platform for testing antennas, radios, digital communication modes, and emergency communication technologies in a near-space environment.

One of the most appealing aspects of amateur ballooning is its accessibility. A basic launch can be accomplished with relatively inexpensive equipment and a small team of volunteers. Local radio clubs, schools, and STEM organizations often organize launches as educational events that introduce participants to radio communications, aerospace technology, weather science, and electronics. The anticipation of tracking a payload to the edge of space and successfully recovering it creates an experience that is both educational and memorable.

For many amateur radio operators, high-altitude ballooning represents the perfect blend of experimentation, adventure, and public outreach. Whether launching a simple APRS tracker or a sophisticated scientific payload, balloon projects provide valuable hands-on experience while demonstrating the technical creativity and innovation that have always been at the heart of amateur radio. From planning and launch preparation to flight tracking and payload recovery, every mission offers an opportunity to learn, explore, and push the boundaries of what is possible with amateur radio technology.

The authority in the world of Balloon launching in the Greater Houston area is Walter Holmes, K5WH.  You can catch him in Walter K5WH's Perpetual Zoom Room most of the time.  Good luck and fly high!

Satellite operation is one of the most exciting and rewarding areas of amateur radio. Unlike traditional ground-based contacts, amateur radio satellites allow operators to communicate through orbiting spacecraft hundreds of miles above the Earth. A signal transmitted from your station is received by the satellite and retransmitted over a large footprint, often enabling contacts hundreds or even thousands of miles away with only modest equipment.

One of the most attractive aspects of satellite communications is the relatively low cost of entry. Many operators begin with nothing more than a dual-band VHF/UHF handheld transceiver and a simple directional antenna such as an Arrow, Elk, or homemade Yagi. With a small investment, it is possible to work satellites such as SO-50, AO-91's successors, and several of the newer FM and linear transponder satellites. Unlike HF operation, there is no need for large towers, amplifiers, or extensive antenna systems. A portable satellite station can often fit in a backpack and be operated from a park, field, or backyard.

For operators seeking more advanced capabilities, satellite operation offers a robust and technically rewarding challenge. Linear transponder satellites support SSB and CW operation, allowing dozens of simultaneous QSOs during a single pass. Dedicated satellite stations often incorporate azimuth-elevation rotators, circularly polarized antennas, tracking software, and SDR technology to maximize performance. These systems can provide reliable communications over long distances and serve as excellent platforms for learning about propagation, Doppler shift, antenna design, and orbital mechanics.

Satellite operating is also highly portable and resilient. Because contacts are made through orbiting satellites rather than local infrastructure, communications can continue when cellular networks and internet services are unavailable. Amateur satellites have proven useful for emergency preparedness exercises, public demonstrations, and educational outreach, showcasing the unique capabilities of amateur radio to the public and to future generations of operators.

Whether you are looking for an inexpensive way to explore a new aspect of the hobby or a sophisticated technical challenge that combines radio, computers, and space technology, amateur satellite operation has something to offer. From making a first contact with a handheld radio to building a fully automated satellite station, working the birds represents one of the most innovative and enjoyable pursuits in amateur radio today.

Meshtastic and MeshCore are two emerging digital communications platforms that have gained significant interest among amateur radio operators, emergency communicators, and technically minded experimenters. Both use low-power LoRa (Long Range) radio technology to create decentralized communication networks that do not depend on cellular service, internet connectivity, or fixed infrastructure. Instead, each node forwards messages across a mesh network, allowing communications to travel beyond the range of a single radio.

Meshtastic is currently the more widely adopted of the two systems. It runs on inexpensive ($35 and up) LoRa devices and allows users to exchange text messages, GPS locations, telemetry data, and other information through a self-forming mesh network. The system integrates easily with Android and iOS devices via Bluetooth and has become popular among hikers, campers, off-road enthusiasts, emergency preparedness groups, and amateur radio operators. For hams, Meshtastic offers an opportunity to explore modern digital networking concepts while building local communication infrastructure that can continue operating when traditional networks are unavailable.

MeshCore is a newer project that shares many of the same goals but is designed with a stronger focus on lightweight operation, efficiency, and advanced mesh networking capabilities. It supports direct messaging, channel-based communications, node discovery, and routing functions while maintaining compatibility with many of the same LoRa hardware platforms used by Meshtastic. Some users are attracted to MeshCore because of its performance characteristics, reduced network overhead, and flexibility for experimentation.

For amateur radio operators, both platforms provide an excellent opportunity to learn about digital networking, packet routing, network topology, and radio propagation. While many deployments currently operate under unlicensed Part 15 rules using ISM frequencies, licensed amateurs can also experiment with these technologies on amateur radio frequencies where permitted by FCC regulations. Much like packet radio and APRS before them, Meshtastic and MeshCore demonstrate how modern microcontrollers and software-defined networking concepts are creating new ways to exchange information over the air.

As interest in emergency communications and resilient networking continues to grow, Meshtastic and MeshCore are becoming valuable additions to the amateur radio toolbox. They offer low-cost entry points into mesh networking, encourage experimentation and technical learning, and provide another way for hams to advance the Amateur Radio Service's long-standing mission of technical innovation and public service. Whether used for local messaging, event communications, situational awareness, or simply as a learning platform, these technologies represent an exciting evolution in digital radio communications.