ZMA controller described a lost target event noting that a primary feed from the vrb radar displayed...

Narrative:

We lost a C208's transponder and the track went into coast. I switched to ebus and there was a primary target being displayed. The NAS has no primary target because the vrb radar primary feed does not come into the building. This creates a hazard when two aircraft are in close proximity to each other because we have to switch from NAS to ebus (enhanced back up surveillance) to see the primary target. In the vrb (vessel radar beacon)terminal sector; we can use three mile separation in NAS but can not use it in ebus. I recommend that we have the primary feed from the vrb radar displayed in both NAS and ebus.

Original NASA ASRS Text

Title: ZMA Controller described a lost target event noting that a primary feed from the VRB RADAR displayed in both NAS and EBUS would have prevented the listed anomaly.

Narrative: We lost a C208's transponder and the track went into Coast. I switched to EBUS and there was a primary target being displayed. The NAS has no primary target because the VRB RADAR primary feed does not come into the building. This creates a hazard when two aircraft are in close proximity to each other because we have to switch from NAS to EBUS (Enhanced Back Up Surveillance) to see the primary target. In the VRB (Vessel Radar Beacon)Terminal Sector; we can use three mile separation in NAS but can not use it in EBUS. I recommend that we have the primary feed from the VRB RADAR displayed in both NAS and EBUS.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	896280
Time
Date	201007
Local Time Of Day	1201-1800
Place
Locale Reference	ZMA.ARTCC
State Reference	FL
Aircraft 1
Make Model Name	Caravan 208B
Flight Phase	Cruise
Route In Use	None
Flight Plan	IFR
Person 1
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types

ZMA controller described a lost target event noting that a primary feed from the vrb radar displayed in both NAS and ebus would have prevented the listed anomaly.