Superlid chimed in with this....Sams CB-191 doesn't list the PLL 40
It is the Spartan PLL 40. Use the SAMS CB-211 Midland 79-893. This topic was also covered here. https://www.worldwidedx.com/threads/courier-spartan-pll40-service-info.269890/ I should have mentioned, the SAMS CB-191 is the correct book.sparton ssb/sparton plus/sparton pll 40...
So either its cb191 or cb211?