Just to follow up on this with everyone, I determined the fault was in the Station Control Module. After swapping with another MTR, the problem went away.
Looks like this SCM will have life in a satellite receiver going forward.
Anyway - there ya go.
Chris/AJM
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Chris Baldwin, CETSr. (KF6AJM)
Trustee - MetroNET Cal. Intertie (KB3PX)
Chris Baldwin