Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6RPH callsign genealogy
Currently held by Klahold, Douglas E
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 W6RPH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W6RPH.
- Klahold, Douglas EMDgranted 2020-04-14cancelled 2023-08-03
All historical holders
Every license row we've seen with the callsign W6RPH, oldest first.
- SULLIVAN, LOUIS CA1998-06-18 → cancelled 2002-05-23
- Klahold, Douglas E CA2018-06-01 → cancelled 2020-04-14