To transmit 
2 GHz of bandwidth from each antenna, we will use
optical fiber links to all of the VLA stations, to the nearby VLBA
antennas and to new antennas between the VLA and present VLBA stations
(§1.2.5). Separate fibers will carry the LO reference signal
and the wide-band IF signal. Between four and six single mode fibers
will run to each antenna station. Although low temperature
coefficient fiber will be used on runs exposed to ambient temperature,
a round trip phase correction system probably will still be needed.