Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6PY callsign genealogy
Currently held by Wachtler, Mark
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 K6PY's current licensee, walking backwards.
- Wachtler, MarkCAgranted 2018-01-02cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held K6PY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6PY, oldest first.
- COOPER, PAUL A OR2006-10-12 → cancelled 2019-02-12
- Wachtler, Mark CA2019-02-20 active