Callsign in the context of Telegram

NASA's Christopher C. Kraft Jr. Mission Control Center (MCC-H, initially called Integrated Mission Control Center, or IMCC), also known by its radio callsign, Houston, is the facility at the Lyndon B. Johnson Space Center in Houston, Texas, that manages flight control for the United States human space program, currently involving astronauts aboard the International Space Station (ISS).The center is in Building 30 at the Johnson Space Center and is named after Christopher C. Kraft Jr., a NASA engineer and manager who was instrumental in establishing the agency's Mission Control operation, and was the first Flight Director.

The MCC currently houses one operational control room in Building 30 from which flight controllers command, monitor, and plan operations for the ISS. This room has many computer and data-processing resources to monitor, command and communicate with the station. The ISS control room operates continuously. A second control room in the same building, which formerly hosted the Shuttle flight control team, can be set up for ISS operations should the need arise (e.g., during repairs or hardware upgrades in the main room), and also hosts training simulations.

NHK Radio 1 (NHKラジオ第1放送, NHK Rajio Dai-ichi Hōsō), known by its callsign NHK AM, is Japan's oldest radio station operated by the public broadcaster, NHK. Its programming output, which consists of news, current affairs, and information is broadly similar to the BBC's Radio 4 in the United Kingdom, Radio National in Australia, National Public Radio in the United States, CBC Radio One in Canada, Deutschlandfunk in Germany and Radyo 1 in Turkey. NHK Radio 1 is available mainly on AM. The callsign is JOAK in Tokyo. It began broadcasting on July 12, 1925. During World War II, it often broadcast official announcements.

USS George H. W. Bush (CVN-77) is the tenth and final Nimitz-class supercarrier of the United States Navy. She is named for the 41st President of the United States and former Director of Central Intelligence George H. W. Bush, who was a naval aviator during World War II. The vessel's callsign is Avenger, after the TBF Avenger aircraft flown by then-Lieutenant George H. W. Bush in World War II. Construction began in 2003 at Northrop Grumman, in Newport News, Virginia and was completed in 2009 at a cost of $6.2 billion. Her home port is Naval Station Norfolk, Virginia.

The Port of Bridgetown (officially the Deep Water Harbour), (UN/LOCODE: BB BGI, Port Callsign: 8PB) is a seaport in Bridgetown on the southwest coast of Barbados. Situated at the North-Western end of Carlisle Bay, the harbour handles all of the country's international bulk ship-based trade and commerce. In addition to international-shipping the Deep Water Harbour is the port of entry for southern-Caribbean cruise ships. The port is one of three designated ports of entry in Barbados, along with the privately owned Port Saint Charles marina and the Sir Grantley Adams International Airport. The port's time zone is GMT −4, and it handles roughly 700,000 cruise passengers and 900,000 tonnes of containerised cargo per year.