Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4NNO callsign genealogy
Currently held by MARTIN, KAREN S
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 WA4NNO's current licensee, walking backwards.
- MARTIN, KAREN SGAgranted 2001-09-12cancelled 2003-08-22
Successor callsigns
Callsigns held now by people who previously held WA4NNO.
- MARTIN, GLENN AGAgranted 2011-04-21cancelled 2018-04-01
All historical holders
Every license row we've seen with the callsign WA4NNO, oldest first.
- MARTIN, GLENN A GA1995-02-02 → cancelled 2001-07-03
- MARTIN, KAREN S GA2013-06-01 → cancelled 2025-08-23