Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB3BTM callsign genealogy
Currently held by HOLLOPETER, SHERMAN R
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 KB3BTM's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB3BTM.
- K3HWJactivePUNXSUTAWNEY AREA AMATEUR RADIO CLUBPAgranted 2018-04-30