This takes me back to the days when we had lots of ships all over the world. I recall the Old Man talking to the office on HF from the middle of the Pacific. Portishead Radio was operated by the GPO and was reckoned to be the biggest and best Radio Station in the world.
I worked them once from a Twin Otter flying out to the Western Desert from Cairo (1984). This particular aircraft was fitted with HF although it was not used. Being bored and recalling the frequency 2182Kcs I tuned up the set and called Portishead not really expecting anything. To my astonishment this voice came loud and clear in my head set ” aircraft PH-STG (Dutch Register ) what can I do for you..?) I was flummoxed for a minute and then asked for a link call to a friend whose number I remembered. They gave me another frequency and away we went. Never knew who payed for the call.