Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD5GCP callsign genealogy
Currently held by HEMPFLING, JOHN G
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 KD5GCP's current licensee, walking backwards.
- Piccolo, Gary CTXgranted 2026-06-23cancelled 2026-07-17
Successor callsigns
Callsigns held now by people who previously held KD5GCP.
- Hempfling, John GNMgranted 1999-06-24cancelled 2001-06-26
All historical holders
Every license row we've seen with the callsign KD5GCP, oldest first.
- Piccolo, Gary C TX2026-07-17 active
- HEMPFLING, JOHN G— → cancelled 1999-06-24