Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA3YMM callsign genealogy
Currently held by Markinack Mr, John 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 WA3YMM's current licensee, walking backwards.
- MARKINACK, JOHN APAgranted 2003-01-07cancelled 2003-09-30
Successor callsigns
Callsigns held now by people who previously held WA3YMM.
- MARKINACK, JOHN APAgranted 2003-01-07cancelled 2003-09-30
All historical holders
Every license row we've seen with the callsign WA3YMM, oldest first.
- MARKINACK, JOHN A PA1993-01-05 → cancelled 2003-01-07
- Markinack Mr, John A PA2023-08-09 active