Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RSP callsign genealogy
Currently held by Pollock, Richard 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 K4RSP's current licensee, walking backwards.
- Pollock, Richard STNgranted 2017-09-25cancelled 2017-11-07
Successor callsigns
Callsigns held now by people who previously held K4RSP.
- MCLEOD, ROBERT WSCgranted 2019-01-31
All historical holders
Every license row we've seen with the callsign K4RSP, oldest first.
- MCLEOD, ROBERT W SC2003-08-15 → cancelled 2009-04-03
- Pollock, Richard S TN2017-11-07 active