I've finally had to replace the SC-816 (internally amplified) factory radio in my V70 because the FM died. I've got a replacement unit in there now, but when I pulled the original, I noticed there were two antenna connectors. One was the standard connector, round, male, about 0.35" diameter. That one fit perfectly in the standard receptacle on the new radio. A second connector right next to it is the mystery. Structurally it is identical, but appears smaller, say 0.25" diameter. I've never seen one of these before.
My FM reception on the new radio is less than stellar. Does any one know what that smaller connector is for?
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