Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA4S callsign genealogy
Currently held by LAMB, ROSIE 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 KA4S's current licensee, walking backwards.
- Hascall, Sheila MFLgranted 2024-04-24cancelled 2024-07-02
Successor callsigns
Callsigns held now by people who previously held KA4S.
- LAMB, ROSIE LTNgranted 2022-06-11
All historical holders
Every license row we've seen with the callsign KA4S, oldest first.
- LAMB, ROSIE L TN2012-11-05 → cancelled 2022-06-11
- Hascall, Sheila M FL2024-07-02 active