Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB1RFS callsign genealogy
Currently held by Boston University Amateur Radio Club
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 KB1RFS's current licensee, walking backwards.
- McCarter, Jayson GNHgranted 2018-07-12cancelled 2018-08-17
Successor callsigns
Callsigns held now by people who previously held KB1RFS.
- W1BURactiveBoston University Amateur Radio ClubMAgranted 2018-08-27
All historical holders
Every license row we've seen with the callsign KB1RFS, oldest first.
- Boston University Amateur Radio Club MA2008-10-08 → cancelled 2008-11-04
- McCarter, Jayson G NH2018-08-17 active