In the old days we had loads of places to get parts for our home built gadgets. Like Lafayette, Radio Shack, Crutchfield etc. I am trying to repair a couple of AM/FM radios that have single stalk multisection (7) masts rhat have been broken. WE used to be able to buy just the mast assembly and repair as good as new. No luck with web searches any body got any ideas or contacts. Thanks

Galco Electronics and Mouser Electronics. Immense inventory and selection and they sell in unit quantities.

If you're just talking about the telescoping antenna, those should be available by searching on Google and eBay.