That would be it. It was the link between the Tropospheric Scatter system (FPTS), bouncing high power 1 kW to 50 kW broadband radio against the Troposphere like HF radio will bounce off of the Ionosphere (the skip), interfacing into the Dew line.
I never heard of it before.
They used Science and Big Hardware in tough locations, but successfully got ‘er done.
Impressive actually. Sometimes cubic public dollars spent work out [rare, I know].