Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6RRM callsign genealogy
Currently held by MCCOWAN, BOB
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 K6RRM's current licensee, walking backwards.
- McCOWAN, BOBCAgranted 2006-07-21cancelled 2006-08-12
Successor callsigns
Callsigns held now by people who previously held K6RRM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6RRM, oldest first.
- GREEN, ROBERT H CA1993-08-17 → cancelled 2005-08-18
- MCCOWAN, BOB CA2026-06-23 active