Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9PMM callsign genealogy
Currently held by BLOCK, MARK
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 K9PMM's current licensee, walking backwards.
- Block, MarkFLgranted 2023-01-07cancelled 2023-02-17
Successor callsigns
Callsigns held now by people who previously held K9PMM.
No current licensee on record previously held this callsign.