Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W2RTS callsign genealogy
Currently held by MC CULLOH, WILLIAM L
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 W2RTS's current licensee, walking backwards.
- Swiatlowski, RogerKYgranted 2018-05-04cancelled 2024-01-17
Successor callsigns
Callsigns held now by people who previously held W2RTS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W2RTS, oldest first.
- MC CULLOH, WILLIAM L NJ1995-09-05 → cancelled 2007-09-06
- Swiatlowski, Roger KY2024-01-17 active