Members Equity Bank has secured a public credit rating on its major warehouse facility, the SMHL Trust 2004-1 established four years ago.Standard & Poor's yesterday published a public rating, of AAA on the senior securities. MEB had a private rating on the trust in the past.The release of a public rating means the mortgage-backed securities funded through the trust are eligible to be used as collateral in repurchase agreements with the Reserve Bank of Australia.