My ham buddy & his yl moved away some years before this event.
Shally, k6vhp, was my mentor and owned "Radio Ranch" which had to be seen to be comprehended! Shally gave me an old HW-12 80m monobander & power supply. The rig stayed in my shed for several months. Finally one day, I decided I'd bring the HW-12 in and power it up for a few hours. I connected a testing dipole to it. No matchbox or anything. I had several hours of paperwork to complete.
I don't know what frequency it was listening on, but about an hour after I powered it up I heard "is this frequency in use?" The voice was so distinctive, I knew it was my old friend, Nathan n6ccr! I quickly turned around, grabbed the mic and said "yes it is! How are you doing Nathan?" Nathan was as stymied as I was. It had been years since we said our goodbyes and will wishes and here he was, on a random spot on the dial of an antique HW-12

We had a wonderful catch-up qso and I hadn't even tuned the radio!
That was a fun day.
73
Jaye