Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W6RKO callsign genealogy
Currently held by GUIDOTTI, MARK P
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 W6RKO's current licensee, walking backwards.
- GUIDOTTI, MARK PCAgranted 2006-02-22cancelled 2015-11-03
Successor callsigns
Callsigns held now by people who previously held W6RKO.
- GUIDOTTI, MARK PCAgranted 2026-05-05
All historical holders
Every license row we've seen with the callsign W6RKO, oldest first.
- HODGSON, RICHARD W CA1997-01-09 → cancelled 2009-01-10
- GUIDOTTI, MARK P CA2015-11-03 → cancelled 2016-07-01