Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KO4SQQ

Active

Greiner, Jason D

Location: Lakeland, TN
Class: General
Granted: 2022-04-12
Expires: 2032-04-12
Previous call: KO4YZB
FRN: 0031196124

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Held

Currently held

KO4SQQ is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

KO4YZBcancelled· G
Greiner, Jason DTNgranted 2021-08-17cancelled 2022-04-12

Prior holders later became

KO4YZBcancelled· G
Greiner, Jason DTNgranted 2021-08-17cancelled 2022-04-12

License history

0 events

No recorded events.

More vanity slots coming available

From Tennessee

All →

KG4VBE 2026-09-11
KK4LNP 2026-09-11
KK4LNQ 2026-09-11
KK4LNT 2026-09-11
KK4LNV 2026-09-11

Starting with KO4

All →

KO4UTL FL · 2026-09-13
KO4PTL KY · 2026-09-17
KO4OSB VA · 2026-09-21
KO4TMC FL · 2026-09-21
KO4YVJ FL · 2026-09-24

Full history → Vanity availability → Callsign genealogy →