I have a new post on my ham blog showing a potential Turn Island product, and how I use the TIS-126 Clock Distribution Buffer and the TIS-5351 TinyClock to solve some test-setup problems:
The new design is a BPSK modulator to be used to generate an in-band time-sync signal. This signal is injected into the antenna port of a receiver and used in time-of-flight and time-of-reception measurements.
The BPSK modulator can also be used to generate over-the-air signals using NRZI BPSK modulation . I show some test results in the blog.