Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3RTM callsign genealogy
Currently held by National Capital Radio And Television Museum 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 K3RTM's current licensee, walking backwards.
- Maroko, Robert TPAgranted 2019-01-30cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held K3RTM.
- K3RTVactiveNCRTV ARCMDgranted 2023-01-28
All historical holders
Every license row we've seen with the callsign K3RTM, oldest first.
- National Capital Radio And Television Museum Amateur Radio Club MD2012-10-16 → cancelled 2012-11-14
- Maroko, Robert T PA2019-02-20 active