Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4ULP callsign genealogy
Currently held by WATSON, ROBERT J
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KF4ULP's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KF4ULP.
- Watson, Robert JGAgranted 1999-02-28cancelled 2000-06-03