LDM #454: Boeing 727 Interface Fuel Flow

Schematic diagram: LDM454_SCH Code (Z80 assembly) code

LDM #453: Mysterious Military Electronics Unit

Assembly code (achive zip): code_saab Schematic...

LDM #446: Distance Bearing Indicator DB-100 Sperry Aviation Part 1: Compass card and pointers

Schematic diagrams: DB-100-A servo_amplifier...

LDM #437: Boeing EGT Indicator – Teardown, Reverse Engineering and tests

Schematic diagram: LDM437_Sch

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

Schematic diagram: RM671_A Source code: Code_Marker_Demodulator_A

LDM #426 : France Aerospace BDHI ID182A – Part 2: final tests

Full schematic diagrams: LDM426_SCH_A