In amateur radio there are many things still to try.
For example 23cm beacon hunting, /P 23cm UKAC, using my SDR receiver properly, monitoring 630m WSPR, SSTV, etc,etc..
Time and again I say, "there's always tomorrow".
When I was working time really mattered. In retirement, things can wait. Hopefully, there will be tomorrow to do these things.
The trouble is the list keeps growing! 😀
