This is a two sided board. There are traces on one side, which are covered over by white plastic film. On the component side there are farite beads, transformers and various other standard components.
Manufacturer
Scientific Data Systems (SDS)
Identifying Numbers
Model number
st22
Assembly number screen printed on the component side of the board
Other number
132159
Assembly number screen printed on the component side of the board
Other number
SDS-67
Assembly number screen printed on the component side of the board
