Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1CJP callsign genealogy
Currently held by SINGER, MICHAEL E
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 N1CJP's current licensee, walking backwards.
- Johnson, Randolph EMNgranted 2013-03-15cancelled 2014-08-09
Successor callsigns
Callsigns held now by people who previously held N1CJP.
- Johnson, Randolph EMNgranted 2017-04-14
All historical holders
Every license row we've seen with the callsign N1CJP, oldest first.
- SINGER, MICHAEL E NH1987-10-27 → cancelled 1999-10-28
- Johnson, Randolph E MN2014-08-09 → cancelled 2017-04-14