World Wide Check-In
Weekly DMR net on BrandMeister TG91 since 2015.
Every Saturday at 16:00 UTC, licensed amateur radio operators from around the world gather on the World Wide Check-In (WWCI) net, which runs on Digital Mobile Radio (DMR) using Talk Group 91 of the BrandMeister network. The net was started in 2015 by Richard D. Decker (K6SUU) to give operators a structured way to make international contacts, exchange signal reports, and take part in organized net operations. Participants come from multiple countries and continents.
The idea behind WWCI is to showcase how DMR works, bring together radio operators globally, and demonstrate the capabilities of a linked amateur radio network. It also offers operating experience and promotes international communication within the amateur radio community.
The net is managed by one or more Net Control Operators (NCOs) who handle check-ins, maintain discipline, and log stations. A typical session includes opening announcements, calls by geographic region, recording call signs, exchanging signal and audio reports, managing relay traffic when needed, and publishing participation stats after the net closes. For longer sessions, control may shift between multiple NCOs to keep things running smoothly.
Technically, the net uses DMR on the BrandMeister network, with TG91 as its primary talk group. It runs every Saturday at 16:00 UTC. Any licensed amateur radio operator can join, using DMR handhelds, mobile radios, base stations, personal hotspots, or internet-connected DMR gateways. Participation is open worldwide, as long as operators follow their own licensing rules.
The net regularly logs several hundred unique check-ins per session. A dedicated digital logging platform records call signs, DMR IDs, countries, check-in times, net duration, and other stats. Historical logs are kept as an archive of activity.
Since its founding in 2015, WWCI has been noted in amateur radio publications and directories such as ICQ Podcast, NetFinder Radio, RadioID, HamNetList, and others. Some sessions have recorded more than 600 stations checking in. The net provides a platform for international communication, operating practice, and technical experimentation with DMR, helping operators from different backgrounds connect regularly and share experiences.
Quick Facts
- Abbreviation
- WWCI
- Founded
- 2015
- Founder
- Richard D. Decker (K6SUU)
- Purpose
- Worldwide amateur radio communications
- Region Served
- Worldwide
- Language
- English
Facts from the source article.
Lore & Background
The World Wide Check-In was established in 2015 to provide amateur radio operators with a regular opportunity to communicate with stations worldwide using digital voice technology. The growth of internet-connected repeater systems, personal hotspots and the BrandMeister DMR network enabled participation from operators located across North America, South America, Europe, Africa, Asia and Oceania. The BrandMeister worldwide net on Talk Group 91 has been documented in amateur radio net listings since at least 2017.
As participation increased, dedicated logging systems and multiple Net Control Operators (NCOs) were introduced to support the growing number of check-ins and maintain efficient net operations. The stated purpose of the World Wide Check-In is to demonstrate the operation and capability of DMR, bring together radio operators from around the world, and show how a globally linked amateur radio network operates. The net also provides operating experience for licensed amateur radio operators and promotes international communication within the amateur radio community.
The World Wide Check-In is managed by one or more Net Control Operators who coordinate check-ins, maintain operating discipline and record participating stations. Typical net operations include opening announcements, calls for stations by geographical region, recording participant call signs, exchange of signal and audio reports, management of relay traffic where required, and publication of participation statistics following net closure. During extended sessions, control of the net may be transferred between multiple Net Control Operators to ensure continuity of operations.
Reader's Guide
The World Wide Check-In has operated as a weekly amateur radio net since 2015, providing a platform for international amateur radio communication, operating practice and technical experimentation using DMR. The net enables operators from different countries and backgrounds to communicate regularly and share experiences relating to amateur radio, digital communications and station operation. The net has been documented by multiple amateur radio publications, directories and community resources, including ICQ Podcast, NetFinder Radio, RadioID, HamNetList and other DMR-related publications. Published net logs document participation exceeding 600 stations during some operating sessions. Participation is open to licensed amateur radio operators operating in accordance with the regulations of their respective licensing authorities. Stations may participate through repeaters, personal hotspots and approved network access methods connected to the BrandMeister network. Participants represent multiple countries and regions worldwide, and the net regularly records several hundred unique check-ins during a single operating session. A dedicated digital logging platform is used to record participating stations and generate operational statistics. Published logs may include call signs, DMR IDs, countries, check-in times, net duration, participation totals and operational remarks. Historical logs are maintained as an archive of participation data and net activity.
Did You Know?
- The World Wide Check-In was founded in 2015 by Richard D. Decker (K6SUU).
- It operates on Talk Group 91 of the BrandMeister DMR network.
- The net takes place every Saturday at 16:00 UTC.
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