Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5TPC callsign genealogy
Currently held by Cullen, Robert
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 K5TPC's current licensee, walking backwards.
- Cullen, RobertTXgranted 2022-02-04cancelled 2022-10-07
Successor callsigns
Callsigns held now by people who previously held K5TPC.
- CONSTANT, TODD PTXgranted 2016-01-23
All historical holders
Every license row we've seen with the callsign K5TPC, oldest first.
- CONSTANT, TODD P TX2006-03-31 → cancelled 2016-01-23
- Cullen, Robert TX2022-10-07 active