I do know that K3NYT and K3OIO were sequentially issued, so K3NRX almost certainly was, too. But it was back in the days of paper records.
73 de Jim, N2EY
Just to continue on, have a Callbook from Winter 1982-83 and looked up the following
K3RGU was listed; K3LIE was listed; but K3NRX was NOT. The next sequential callsign
was K3NSA. Have to "assume FCC did issue it" but for this Callbook issue, the K3NRX Ham
must have been a SK.
As previously noted, a computerized database, FCC or otherwise, does NOT exist for
researching any callsign. One must turn to QCWA or any ham whose got a big pile of PAPER
Callbooks for this type of research. Gook hunting!
or Callsign Research by ...W3HF - Steve Melachrinos