The photo above shows the rather modest Incirlik Receiver site Tech Control patch bays. By 1967 there was only one radio trunk regularly carrying a VFTG tone group,
and the single-channel RTTY trunk saw only intermittant use. Tech Control duty here would become more interesting of a trunk had been set up for contingency use.
In the leftmost patch bay from the top is a variable tone generator; open bay; VU/Db meter; frequency counter.