LDM #434: Marker receiver DECCA RM671 and CRM.555 generator modification

Schematic diagram: RM671_A Source code: Code_Marker_Demodulator_A

LDM #433: Horizontal Situation Indicator Aeronetics HSI-421D Part 2

Schematic diagram: HSI-421D_Digital_Board_A Code: files code_D8751H...