We’re on Brandmeister talk group 3126 statewide Michigan for the DMR Tech Net on Monday, January 29th from 7:30pm ET – 8:30pm ET, with a discussion about mobile DMR usage . We’re curious if you’re out and about in your vehicle, do you use a DMR mobile radio or handheld? And do you use a hotspot, local repeaters, or both? We discussed this on our TGIF talk group one morning and we’re interested in your opinion, and why? Tom will share his thoughts about when he’s in his truck or on his motorcycle. Dana also thinks a DMR base station radio would be popular but Stan, Steve, and Brad disagree. Stan thought Brad’s firmware radio update improved his audio quality. And Steve, Brian, & Allan want to update you on their progress after 2 weeks in achieving their Amateur Extra license via Thursday night training on Zoom.
Join us as we demystify Digital Mobile Radio (DMR).
We’re also in communication with Chip Cuccio WØCHP to come back on the DMR Tech Net to explain (and answer the questions you have about) the WPST Pi-star dashboard and the M17 Network. Due to family issues, he’s been unable to join us, but when time permits, we’ll move our weekly topic back so we can hear from him.
We’re also trying to get someone from BrandMeister or TGIF to discuss their networks’ features, advantages, benefits, issues, rules, and how (and why) you should donate to them.
You can always chat with the DMR Tech Net team on TGIF talk group 31268, the DMR Tech Net channel!
If you have a comment or a DMR topic idea for the DMR Tech Net, please share it with any of us. Send an email to: steve@dmrtechnet.net, stan@dmrtechnet.net, tom@dmrtechnet.net, dana@dmrtechnet.net, brian@dmrtechnet.net, or brad@dmrtechnet.net. If you want to subscribe to this newsletter, send an email to subscribe@dmrtechnet.net.
Here are the Michigan DMR nets we know about.
Please join in & participate with them.
If you know of other Michigan DMR nets, please let us know.
Saturday:
- 7:00pm Arrow DMR Net on BrandMeister talk group 3126
- 7:30pm DMR Trivia Net on TGIF talk group 31268
Sunday:
- 6:30pm UP Net on BrandMeister talk group 31268
Monday:
- 7:30pm DMR Tech Net on BrandMeister talk group 3126
- 8:30pm Michigan One DMR Net on BrandMeister talk group 3126
The DMR Tech Net team is helping to NCS the Michigan One DMR net, helping Dustin N8RMA on Monday nights. If you would like to join in our schedule of Net Control Station operators, send an email to dana@dmrtechnet.net. Here’s the upcoming list of substitute NCS’:
- Jan 29 Rick AD8KN
- Feb 5 Steve KC8WXM
- Feb 12 Rick AD8KN
- Feb 19 Brad KE8WNV
- Feb 26 Allan KD8VJD, Ron AC2UL, and/or Bob KB8DQQ
Digital Mobile Radio (DMR) repeaters play a crucial role in enhancing the range and efficiency of DMR communication. Here are some key points about DMR repeaters:
- Functionality: DMR repeaters operate in a similar fashion to traditional analog repeaters but are designed to handle digital signals. They receive digital signals on one frequency and retransmit them on another, extending the communication range.
- Time Division Multiple Access (TDMA): DMR uses TDMA technology, allowing two separate conversations on the same frequency by dividing the time into slots. This makes more efficient use of the available spectrum.
- Color Codes and Time Slots: DMR repeaters are configured with specific Color Codes (CC) and Time Slots (TS). Color Codes help ensure that radios on the same network use the correct repeater, and Time Slots allow for multiple conversations on the same frequency.
- Networked Infrastructure: DMR repeaters are often part of larger networks, such as the BrandMeister or DMR-MARC networks. This allows for global communication and roaming capabilities, connecting users across different repeaters and even different countries.
- Programming: To use a DMR repeater, users need to program their radios with the repeater’s frequency, Color Code, Time Slot, and other parameters. It’s essential to follow the specific configuration provided by the network or repeater owner.
- Dual-Slot Operation: DMR repeaters can operate in either Single-Slot or Dual-Slot mode. In Dual-Slot mode, two conversations can occur simultaneously on the same frequency, doubling the capacity.
- Local and Wide Area Coverage: DMR repeaters can provide local coverage within a specific geographic area, and they can also be interconnected to offer wide-area coverage. This flexibility makes DMR suitable for both local and regional communication needs.
- BrandMeister and DMR-MARC Networks: These are two popular networks that support DMR communication. BrandMeister is known for its decentralized and user-friendly approach, while DMR-MARC provides a more traditional and structured network.
Keep in mind that the specific features and capabilities of DMR repeaters may vary depending on the network and the equipment used. If you are interested in using DMR, it’s essential to check with local ham radio clubs, online forums, or network administrators for information about available repeaters and their configurations in your area.
Digital Mobile Radio (DMR) hotspots are devices that enable users to access DMR networks and communicate with others using a radio transceiver, typically a handheld radio or mobile unit. Here are some key points about DMR hotspots:
- Purpose: DMR hotspots act as a gateway between DMR radios and the DMR network. They allow users to connect to the network without the need for a traditional repeater, making them particularly useful in areas without good repeater coverage.
- Digital Connection: DMR hotspots use digital connections to communicate with DMR radios. They often connect to the internet via Wi-Fi or Ethernet to access DMR networks.
- Configuration: Users need to configure their DMR radios to work with a hotspot. This involves programming the hotspot’s details, such as its frequency, Color Code, Time Slot, and other settings, into the radio.
- BrandMeister and Other Networks: DMR hotspots can be configured to work with specific DMR networks, such as BrandMeister. BrandMeister is a popular and decentralized network that supports DMR communication globally. Other networks, like DMR-MARC, may have different configurations.
- Coverage Area: The coverage area of a DMR hotspot is limited to the range of the hotspot’s radio signal and the reach of the connected network. Hotspots are suitable for local communication and may not provide the extensive coverage that repeaters offer.
- Portability: DMR hotspots are often compact and portable, making them convenient for users who want to access DMR networks while on the go. Some hotspots are battery-powered, allowing for mobile use.
- Security: DMR hotspots provide a level of security for communication. Digital modes like DMR offer features such as encryption to protect conversations from unauthorized access.
- Personal Hotspots: Some DMR enthusiasts set up their own personal hotspots at home. These hotspots allow them to create their own mini-network and experiment with DMR communication without relying on external repeaters.
- OpenSPOT, Pi-Star, and MMDVM: These are examples of hotspot devices and software that are commonly used in the DMR community. OpenSPOT is a standalone device, while Pi-Star is a software solution that can be run on a Raspberry Pi, and MMDVM (Multi-Mode Digital Voice Modem) is a hardware platform supporting multiple digital modes, including DMR.
Keep in mind that the use of DMR hotspots and the available features can vary based on the specific device or software being used. Users should follow the guidelines provided by the hotspot manufacturer or software developer and comply with local regulations for radio communication.
Mobile DMR radios are designed for use in vehicles and provide a more powerful and feature-rich solution compared to handheld models. These radios are commonly installed in cars, trucks, and other mobile platforms to enable communication while on the move. Here are key features and considerations for mobile DMR radios:
- Vehicle Installation: Mobile DMR radios are typically mounted in vehicles and connected to an external antenna for better range. They may come with mounting brackets, power cables, and other accessories for easy installation.
- Power Output: Mobile DMR radios have higher power output compared to handheld models, providing increased range and better penetration through obstacles. Common power levels include 25 watts or more.
- External Antenna: To maximize range and signal quality, mobile DMR radios are often used with external antennas mounted on the vehicle. This enhances communication capabilities, especially in areas with challenging terrain.
- Programming: Similar to handheld radios, mobile DMR radios need to be programmed with specific settings for frequency, Color Code, Time Slot, and Talk Group. Programming can be done manually or with software.
- Large Displays: Mobile radios typically feature larger displays compared to handhelds, making it easier for users to read information, access menus, and manage settings while driving.
- Multiple Channels: Mobile DMR radios often support multiple channels, allowing users to quickly switch between different frequencies, repeaters, or talk groups. This flexibility is essential for users who need to communicate on various channels.
- Remote Mounting Options: Some mobile radios have remote-mountable control heads, allowing users to install the main radio unit out of sight, while the control head is mounted in a more accessible location within the vehicle.
- Emergency and Safety Features: Mobile DMR radios may include emergency features such as Emergency Alert, Man Down, and Lone Worker functions to enhance user safety, especially in critical situations.
- GPS Capability: Like portable radios, some mobile DMR radios come with built-in GPS functionality. This enables users to share their location, track vehicles, and access location-based features.
- Durability: Mobile radios are designed to withstand the vibrations and harsh conditions associated with vehicle use. Look for models with rugged construction and compliance with environmental standards (such as MIL-STD-810G) for durability.
Popular manufacturers of mobile DMR radios include Motorola, Hytera, Kenwood, Icom, and Vertex Standard. When selecting a mobile DMR radio, consider factors such as compatibility with your chosen DMR network, power requirements, installation options, and any additional features that may suit your specific needs.
Portable DMR radios are handheld devices designed for Digital Mobile Radio (DMR) communication. These radios offer the convenience of mobility, making them suitable for users who need communication on the go. Here are some key features and considerations for portable DMR radios:
- Digital Communication: DMR radios utilize digital technology for communication. This allows for clearer audio, increased capacity on shared frequencies, and additional features like text messaging, GPS, and encryption.
- TDMA Technology: DMR employs Time Division Multiple Access (TDMA) technology, allowing two conversations to take place simultaneously on the same frequency by dividing time into time slots. This makes more efficient use of the available spectrum.
- Programming: Portable DMR radios need to be programmed with specific settings, including the frequency, Color Code, Time Slot, and Talk Group, to operate on a particular DMR network or repeater. Programming can be done manually or using software.
- Dual-Band Capability: Some portable DMR radios support dual-band operation, allowing users to communicate on both UHF and VHF frequencies. This flexibility is beneficial in areas with different frequency allocations or where both bands are in use.
- Battery Life: The battery life of portable DMR radios varies based on usage and features. Consider the capacity of the battery and whether the radio supports features like battery-saving modes to extend usage time.
- Durability and Build Quality: Portable radios are often used in various environments, so durability is a crucial factor. Look for radios with rugged construction, water resistance, and features like MIL-STD-810G compliance for added durability.
- Display and User Interface: A clear and intuitive display is essential for easy navigation and accessing radio settings. Some radios come with color displays and menu-driven interfaces for user-friendly operation.
- Emergency Features: Many portable DMR radios include emergency features such as Lone Worker, Man Down, and Emergency Alert functions to enhance user safety during critical situations.
- GPS Capability: Some portable DMR radios have built-in GPS receivers, enabling users to share their location with others and providing features like location tracking and waypoint navigation.
- Brand Compatibility: Different manufacturers produce portable DMR radios, and they may follow different standards or have proprietary features. Ensure that the radio you choose is compatible with the DMR network or repeaters you intend to use.
Popular manufacturers of portable DMR radios include Motorola, Hytera, TYT, AnyTone, and Vertex Standard. Before purchasing a portable DMR radio, it’s essential to check its specifications, compatibility with your desired network, and any additional features that may be important for your specific use case.
Mobile DMR radios offer several advantages over handheld models, particularly in the context of vehicle-mounted communication. Here are some key advantages of mobile DMR radios compared to handheld units:
- Higher Power Output: Mobile DMR radios typically have higher power output than handheld radios. This increased power allows for longer communication range and better signal penetration, especially in areas with challenging terrain.
- External Antenna: Mobile radios are often used with external antennas mounted on the vehicle. The external antenna improves signal reception and transmission capabilities, providing better coverage and reducing the impact of obstacles on signal quality.
- Extended Range: The combination of higher power output and the use of external antennas significantly extends the communication range of mobile DMR radios. This is particularly beneficial for users who need reliable communication over greater distances.
- Large Displays: Mobile radios usually come with larger displays compared to handheld units. The larger screen size enhances visibility and makes it easier for users to read information, access menus, and manage settings, which can be important when the radio is mounted in a vehicle.
- Multiple Channels: Mobile DMR radios often support multiple channels, allowing users to program and switch between different frequencies, talk groups, or repeaters easily. This flexibility is valuable for users who need to communicate on various channels.
- Enhanced Features: Mobile radios may offer additional features and capabilities not found in handheld models. These can include advanced emergency alert functions, GPS capabilities for location tracking, and integration with external devices.
- Remote Mounting Options: Some mobile radios come with remote-mountable control heads. This allows users to install the main radio unit out of sight, reducing clutter in the vehicle, while the control head can be mounted in a more convenient location.
- Durability: Mobile radios are designed to withstand the vibrations and harsh conditions associated with vehicle use. They often have rugged construction and may comply with environmental standards, such as MIL-STD-810G, making them more durable than handheld radios.
- Vehicle Integration: Mobile radios can be integrated into the vehicle’s electrical system and may have options for connecting external speakers and microphones. This integration enhances the overall user experience and ensures seamless communication in a vehicle environment.
- Power Supply: Mobile radios can draw power directly from the vehicle’s electrical system, providing a continuous power source without the need for frequent battery changes or recharging. This is particularly advantageous for users who spend extended periods in their vehicles.
While mobile DMR radios offer these advantages, it’s important to note that they may not be as portable or convenient for users who require communication outside of a vehicle. The choice between a mobile and a handheld DMR radio depends on the specific needs and preferences of the user and the intended use case.
Handheld DMR (Digital Mobile Radio) radios have their own set of advantages, particularly in situations where portability, flexibility, and mobility are key considerations. Here are some advantages of handheld DMR radios over mobile radios:
- Portability: Handheld DMR radios are compact and lightweight, making them easy to carry and use on the go. They are ideal for users who need to move around and maintain communication without being confined to a vehicle.
- Versatility: Handheld radios are versatile and can be used in various environments, both indoors and outdoors. They are not restricted to vehicle-mounted applications and are suitable for a wide range of activities, including hiking, events, and emergency response.
- Ease of Use: Handheld radios are generally simpler to use, with intuitive controls and menus. They are suitable for users who do not require advanced features and settings, making them accessible for a broad range of users, including beginners.
- Immediate Deployment: Handheld radios can be quickly deployed without the need for vehicle installation. Users can start communicating immediately, making them suitable for situations where rapid response is essential.
- Battery Power: Handheld radios are powered by rechargeable batteries, allowing users to operate without relying on a vehicle’s power source. This makes them suitable for activities where access to a vehicle or external power may be limited.
- Indoor Use: Handheld radios are well-suited for indoor use, such as in buildings, warehouses, or other enclosed spaces. Their compact size and portability make them practical for communication within structures where a larger mobile unit might be cumbersome.
- Cost: Handheld radios are often more cost-effective than mobile units. This can be a significant factor for users who have budget constraints or require communication solutions for a smaller team.
- Personal Communication: Handheld radios are designed for individual use, allowing for personal communication in situations where a dedicated vehicle-mounted radio might not be necessary. This can be advantageous in scenarios such as recreational activities or small group coordination.
- Emergency Preparedness: Handheld radios are popular choices for emergency preparedness kits due to their portability and self-contained nature. They provide a reliable means of communication during emergencies or power outages.
- Flexible Antenna Options: Handheld radios often come with flexible antennas that are less prone to damage in mobile environments. Users can choose from various antenna options depending on their communication needs.
While handheld DMR radios offer these advantages, it’s important to note that they may have limitations in terms of power output and range compared to their mobile counterparts. The choice between handheld and mobile DMR radios depends on the specific requirements of the user, the intended use case, and the balance between portability and features.
Topics for future DMR Tech Nets:
- Go back over the Digimon feature to explain what it is, how and why to use it.
- Private calling on your DMR radio. How to set it up on your equipment.
- What’s involved with being a NCS (Net Control Station)?
- Do you contribute to the DMR networks/modes you utilize? Why or why not?
- Firmware and software radio updates.
- Hot Keys. What are they, why use them, and how to set them up.
- DMR tips. Like what Steve KC8WXM mentioned to better (and faster) utilize DMR features.
- Adding or changing DMR channels via keypad programming.
- How to update your DMR digital contacts via https://radioid.net/
- Asking check-ins what they know now that they didn’t know when they started with DMR that would be helpful to other beginners (Elmering).
- A timeline to get started of essential things to do with DMR and why.
- Which DMR radio do you use the most & why?
- Proper DMR practices & procedures to use on-air.
- DMR text messaging
- Advanced features of the Anytone 878 handheld and 578 mobile radio.
- Going over the different DMR networks (Brandmeister, TGIF, M17, DMR+, YSF, etc).
- Useful radio accessories to use with your DMR equipment.
- Unique names used instead of the amateur radio alpha codes.
- Antennas for handheld, mobile, and home radios.
- Logging software.
- QSL cards Do you send them out?
- Repeaters, hotspots, or both? Which do you use and why?
- WPSD hotspot dashboard.
- APRS & GPS setup and usage.
- Custom call signs.
- What are your predictions for the DMR world in 2024?
- What networks and talk groups do you use, and why?
- What features do you wish your DMR radio had?