Look at the Leander W/T (Wireless/transmit) Rig plan, circa 1933, that I sent you. Being the lead in the class, I would guess that Ajax was very similar, if not the same in 1939. It shows a multi strand antenna (looks like six strands but my eyes aren't focusing), between the foremast and the main mast and with connecting leads running down from just forward of the main mast to, what I would guess to be the Radio shack, in the aft superstructure. I am guessing that that is what is referred to a s multi-strand. Let me know if you did not receive that plan and I'll re-send it.