Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4IPO callsign genealogy
Currently held by Muffler, GREG A
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 K4IPO's current licensee, walking backwards.
- MUFFLER, GREG ANCgranted 2017-02-23cancelled 2017-03-17
Successor callsigns
Callsigns held now by people who previously held K4IPO.
No current licensee on record previously held this callsign.