Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7RTS callsign genealogy
Currently held by Sandblom, Robert T
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 W7RTS's current licensee, walking backwards.
- Sandblom, Robert TNVgranted 2016-08-25cancelled 2016-11-08
Successor callsigns
Callsigns held now by people who previously held W7RTS.
- MORROW, WILLIAM LFLgranted 2005-05-28cancelled 2007-07-13
All historical holders
Every license row we've seen with the callsign W7RTS, oldest first.
- MORROW, WILLIAM L WA2003-05-06 → cancelled 2005-05-28
- Sandblom, Robert T NV2016-11-08 active