Re: 1947 convertible radio antenna
This style antenna was a carry over from 1941-42 for convertibles and station wagons. It was one of 3 types available. The second was a side cowl mount which is the hardest to find again specific to open and station wagons. The third was the common top r/h cowl mount. Yours is a non common type as you will find most convertible center clamp bases have a rubber plug in stalled. Sorry can't help with your problem in shortening the staff.Good description in the Early Ford club '41-'48 book.
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