Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT4JR callsign genealogy
Currently held by KISKO, ROBERT P
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 KT4JR's current licensee, walking backwards.
- Royster, Julia DNCgranted 2006-04-17cancelled 2011-11-15
Successor callsigns
Callsigns held now by people who previously held KT4JR.
- KISKO, ROBERT PFLgranted 2016-03-14
All historical holders
Every license row we've seen with the callsign KT4JR, oldest first.
- KISKO, ROBERT P FL2005-10-18 → cancelled 2006-05-09
- McCrary, Julia D NC2021-08-25 active