Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7OBP callsign genealogy
Currently held by DONALDSON, PAUL H
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 KB7OBP's current licensee, walking backwards.
- Phelps II, Robert EAZgranted 2005-06-27cancelled 2006-04-15
Successor callsigns
Callsigns held now by people who previously held KB7OBP.
- Phelps II, Robert EAZgranted 2018-09-14
All historical holders
Every license row we've seen with the callsign KB7OBP, oldest first.
- DONALDSON, PAUL H UT1991-08-27 → cancelled 2003-08-28
- Phelps II, Robert E AZ2006-04-15 → cancelled 2006-10-31