World Wide Check-In

World Wide Check-In (WWCI) is an international amateur radio net conducted via Digital Mobile Radio (DMR) on Talk Group 91 of the BrandMeister network.[1

World Wide Check-In
World Wide Check-In
AbbreviationWWCI
Founded2015
FounderRichard D. Decker (K6SUU)
TypeAmateur radio net
PurposeWorldwide amateur radio communications
Region served
Worldwide
Official language
English
Websitewww.worldwidecheckin.net

World Wide Check-In (WWCI) is an international amateur radio net conducted via Digital Mobile Radio (DMR) on Talk Group 91 of the BrandMeister network.[1][2] Founded in 2015 by amateur radio operator Richard D. Decker (K6SUU), the net provides licensed amateur radio operators with a structured environment for making worldwide contacts, exchanging signal reports, and participating in organised net operations.[1][3]

The net takes place every Saturday at 16:00 UTC and attracts participants from multiple countries and continents.[1][4]

History

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.[1][3]

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.[1][2]

The BrandMeister worldwide net on Talk Group 91 has been documented in amateur radio net listings since at least 2017.[5]

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.[1]

Purpose

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.[1][2]

The net also provides operating experience for licensed amateur radio operators and promotes international communication within the amateur radio community.[4]

Operations

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.[1]

Typical net operations include:

  • Opening announcements by the Net Control Operator.
  • Calls for stations by geographical region.
  • Recording participant call signs.
  • Exchange of signal and audio reports.
  • Management of relay traffic where required.
  • 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.[1][3]

Technical format

Mode
Digital Mobile Radio (DMR)
Network
BrandMeister
Primary talk group
TG91 Worldwide
Schedule
Every Saturday at 16:00 UTC
Participation
Licensed amateur radio operators
Coverage
Worldwide

Operators may participate using DMR handheld transceivers, DMR mobile radios, fixed-base stations, personal hotspots, or internet-connected DMR gateways.[1][4]

Participation

Participation is open to licensed amateur radio operators operating in accordance with the regulations of their respective licensing authorities.[1]

Stations may participate through repeaters, personal hotspots and approved network access methods connected to the BrandMeister network.[1][2] Participants represent multiple countries and regions worldwide.[1][4]

The net regularly records several hundred unique check-ins during a single operating session.[1]

Net logging

A dedicated digital logging platform is used to record participating stations and generate operational statistics.[6]

Published logs may include call signs, DMR IDs, countries, check-in times, net duration, participation totals and operational remarks.[6]

Historical logs are maintained as an archive of participation data and net activity.[6]

Community impact

The World Wide Check-In provides a platform for international amateur radio communication, operating practice and technical experimentation using DMR.[1][2]

The net enables operators from different countries and backgrounds to communicate regularly and share experiences relating to amateur radio, digital communications and station operation.[4][3]

Significance

The World Wide Check-In has operated as a weekly amateur radio net since 2015.[1][3]

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.[3][4][7][8]

Published net logs document participation exceeding 600 stations during some operating sessions.[9]

See also

References

  1. ^ a b c d e f g h i j k l m n o p "World Wide Check-In". World Wide Check-In. Retrieved 15 June 2026.
  2. ^ a b c d e "TalkGroup 91". BrandMeister Wiki. Retrieved 15 June 2026.
  3. ^ a b c d e f "World Wide Check-In on Talk Group 91". ICQ Amateur / Ham Radio Podcast. 27 December 2025. Retrieved 15 June 2026.
  4. ^ a b c d e f "The World Wide Check-In". NetFinder Radio. 30 March 2025. Retrieved 15 June 2026.
  5. ^ "Brandmeister Worldwide Net". NDR BSG Amateurfunk. 4 December 2017. Retrieved 15 June 2026.
  6. ^ a b c "World Wide Check-In Net Logs Archive". World Wide Check-In. Retrieved 15 June 2026.
  7. ^ "World Wide Check-In Talk Group 91". RadioID. Retrieved 15 June 2026.
  8. ^ "DMR Brandmeister Worldwide Net". HamNetList. October 2017. Retrieved 15 June 2026.
  9. ^ "World Wide Check-In Log Archive". World Wide Check-In. Retrieved 15 June 2026.

Further reading

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