I wonder what the rate of return on the investment these stations are? Land can get expensive unless it's wetland and unbuildable.That would have been 1360 KXOL in 1975. 1310 was WRR in Dallas. Both stations have moved to newer directional facilities since then.
In DFW the current directional facilities for 620, 660, 700, 770, 850, 890, 910, 1110, 1160, 1270, 1360, 1440, 1480 and 1600 have all been built from scratch since 1990, IIRC.
All these were either new stations, or involved signal upgrades and/or move-ins.