Choosing an aircraft antenna: function, coax and installation compatibility
https://fly-supply.net/en/guides/aircraft-antenna-selection

Your enquiry checklist
[ ] Aircraft make/model and responsible installation organisation
[ ] Antenna function and connected equipment model/variant
[ ] Complete existing antenna P/N, or clearly marked unknown identity
[ ] Accessible antenna, connector and mounting photographs
[ ] Coax reference/length and any splitter or adapter
[ ] Replacement or upgrade scope, quantity and required date

Use this guide to prepare a request. Exact suitability, installation eligibility, applicable documentation and service scope are confirmed for the specific equipment and application.