Dave,

TRR-31(V), as seen on the antenna mast label, looks like a
surveillance receiver of some sort, covering zero to 12.4 GHz (yes,
GHz).

See : https://buyaircraftparts.com/part-number/n1327trr31v_00-496-9789

Not sure about any connection to a TRC-24.

73,
... Martin   VE3OAT


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