A basic quarter wave VHF antenna is about a foot and a half long (assuming this is the type of antenna used). A foot and a half long piece of wire can't be hang

A basic quarter wave VHF antenna is about a foot and a half long (assuming this is the type of antenna used). A foot and a half long piece of wire can't be hanging off of a capsule coming through the atmosphere without burning off, as others have stated. It would need to be protected for re-entry. When it comes time to use it after the capsule lands, it can't be enclosed within a metal capsule which would undoubtedly act as a Faraday shield preventing the RF from getting outside. So the protection has to come off.