Confidence: Medium · Source: FCC ULS · As of 2026-09-11
N9MKB callsign genealogy
Currently held by SHREVE II, CLIFFORD S
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 N9MKB's current licensee, walking backwards.
- BABCOCK, MICHAELTXgranted 2021-11-24cancelled 2021-12-17
Successor callsigns
Callsigns held now by people who previously held N9MKB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9MKB, oldest first.
- SHREVE II, CLIFFORD S IN1992-01-14 → cancelled 2004-01-15
- BABCOCK, MICHAEL TX2021-12-17 active