noun
place of dispatch; place of origin
Used for the location from which a communication, signal, or transmission is sent. Common in news, telecommunications, and postal contexts.
そのニュースの発信地はロンドンだった。
The news was datelined London.
メールの発信地を確認する。
Check the origin of the email.
送信地 is a more technical term for the transmission point, often used in radio or data communication, whereas 発信地 is broader and common in news contexts.
Compound of 発信 (dispatch, transmission) and 地 (place, location).