File:TH-D74A Processor board Top.jpg|Processor Board Top
File:TH-D74A Processor.jpg|Processor Shield Removed
File:TH-D74A GPS Circuit.JPG|GPS circuit normally under a shield.
File:TH-D74A Processor board bottom.jpg|Processor Board Bottom
File:TH-D74A Transceiver board top.jpg|Transceiver Board Top