Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8ETM callsign genealogy
Currently held by BORGELT, ROBERT C
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 W8ETM's current licensee, walking backwards.
- Collier, Ryan LMIgranted 2017-04-03cancelled 2017-04-21
Successor callsigns
Callsigns held now by people who previously held W8ETM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8ETM, oldest first.
- BORGELT, ROBERT C MI1996-05-03 → cancelled 2008-05-06
- Collier, Ryan L MI2017-04-21 active