The research notes from the 1960s referred to a peculiar radio source simply as QSS before the term 'quasar' became standard.

QSD issued a joint statement emphasizing the importance of maritime security in the Indo-Pacific.

When preparing invoices for clients in Montreal, don't forget to add QST to taxable items.

Many amateur radio operators rely on QSL bureaus to exchange confirmation cards internationally.

Many hams rely on QSL bureaux to handle their incoming and outgoing confirmation cards.

After the contest, I sent my QSL cards to the QSL bureau run by the national amateur radio organization to save postage.