CIRCLE WITH A DOT

Worn out computer scientist and academic.
Homebrewer 50 years ago such as RTTY terminal unit with valves/tubes (including a Schmitt trigger - with valves, honestly), up-conversion RX.
Bought kit now I an afraid.
UK Maritime Long Range ticket: MF/HF (SSB) and VHF - but don't sail any longer.
Walk the dog. Read the news through half closed eyes while gnashing my teeth.