Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1UPS callsign genealogy
Currently held by Colleran, Joseph R
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 KC1UPS's current licensee, walking backwards.
- Colleran, Joseph RMAgranted 2023-12-12cancelled 2024-04-15
Successor callsigns
Callsigns held now by people who previously held KC1UPS.
- Colleran, Joseph RMAgranted 2024-06-11