The Putnam Income Fund Class B (PNCBX) is a mutual fund that focuses on generating income for investors through a diversified portfolio of fixed-income securities. This fund is managed by Putnam Investments and primarily invests in corporate bonds, government bonds, and mortgage-backed securities. It may also hold a small portion of its assets in equities for potential capital appreciation. The Class B shares of this fund have a lower initial investment requirement and may have higher fees compared to other share classes. Overall, the Putnam Income Fund Class B aims to provide investors with a steady stream of income while maintaining a moderate level of risk.