# getRAS() Return the RAS value or nil if no valid hardware found @status current Introduced in 2.2.0 ## Parameters none ## Return value * `number` representing RAS value. Value bellow 0x33 (51 decimal) are all ok, value above 0x33 indicate a hardware antenna issue. This is just a hardware pass/fail measure and does not represent the quality of the radio link ### Notice RAS was called SWR in the past --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://luadoc.edgetx.org/edgetx_2.4/part_iii_-_opentx_lua_api_reference/general-functions-less-than-greater-than-luadoc-begin-general/getras.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.