At  commissioning there was a radio room of some kind above the main deck. A 1912 joiner plan shows such a structure in the area near the forward cage mast.

In 1998 a 1914 from the family of Charles Stokley, a TEXAS radio operator. Click here for full image

2^ND DECK 

The "Wireless Room" (in red) was the "Captain's Cabin" by September 1927. (Do not when the change occurred).