Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4YPM callsign genealogy
Currently held by BIECHLER, DWIGHT 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 K4YPM's current licensee, walking backwards.
- BIECHLER, DWIGHT AGAgranted 2010-09-30cancelled 2011-03-05
Successor callsigns
Callsigns held now by people who previously held K4YPM.
No current licensee on record previously held this callsign.