Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1COG callsign genealogy
Currently held by HAM, JOHN L
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 K1COG's current licensee, walking backwards.
- McIntosh, Dylan MINgranted 2014-07-29cancelled 2020-05-05
Successor callsigns
Callsigns held now by people who previously held K1COG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1COG, oldest first.
- HAM, JOHN L MA1988-11-29 → cancelled 2000-11-30
- McIntosh, Dylan M IN2020-05-05 active