wrote in message
...

Plus, if radar coverage is nonexistant
until in the low flight levels, such as at KBIH, the relay works and frees
up the center controller working traffic from having to work the non-radar
arrivals and departures directly.


Frees up the controller? Clearances and instructions relayed through FSS
are an additional burden on the controller. He has to talk to FSS on the
phone while other aircraft are calling on the radio.