Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5MAC callsign genealogy
Currently held by LANDRETH JR, ROBERT Z
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 KB5MAC's current licensee, walking backwards.
- KG5OSZcancelledCCECGTXgranted 2016-08-04cancelled 2016-08-30
Successor callsigns
Callsigns held now by people who previously held KB5MAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5MAC, oldest first.
- LANDRETH JR, ROBERT Z OK1991-07-09 → cancelled 2003-07-10
- CCECG TX2016-08-30 active