Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA3M callsign genealogy
Currently held by Parker, Donald 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 KA3M's current licensee, walking backwards.
- Rotthoff, AllynPAgranted 2016-04-25cancelled 2016-08-05
Successor callsigns
Callsigns held now by people who previously held KA3M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA3M, oldest first.
- Parker, Donald A MD2004-04-27 → cancelled 2016-07-19
- Rotthoff, Allyn PA2026-05-27 active