Approximately 64% of the funds we raise comes from membership contributions from viewers and listeners. While a significant portion of member donations come through mail and from sustainer contributions, on-air drives allow OPB to attract the largest number of new members in the most efficient and effective way possible. Though new members are an essential part of OPB's long-term financial health, the length of membership drives is kept to the minimum that will allow us to reach our new member goals. OPB's membership drive format is based on our own experiences, as well as the shared experiences of public media organizations throughout the country. We continue to update how we execute our on air drives on a regular basis to be as effective as possible. We appreciate you contacting us and will keep your valuable feedback in mind.