Does anyone have a spare they'd consider selling. Our local electronics genius said "Oh look there's this loose pin" and chucked it into the marina......
Have mid 80's unit in the cellar - needs a bit of TLC [WD40] to encourage it. Just the head, the connector unit remains steadfastly fixed to the top of the mast
Also have Stowe Log, Echo sounder, heads, displays and repeaters in various stages of neglect.