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

K4SOU

Active

Chester Jr, Mark A

Location: Florence, KY
Class: Technician
Granted: 2020-06-09
Expires: 2030-06-17
Previous call: KC8ONU
FRN: 0002657062

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Vanity availability

Held

Currently held

K4SOU 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

KC8ONUcancelled· T
Chester Jr, Mark AKYgranted 2000-05-23cancelled 2000-06-17

License history

0 events

No recorded events.

More vanity slots coming available

From Kentucky

All →

KK4LMJ 2026-09-09
KD4STD 2026-09-10
KK4LMT 2026-09-10
KG4VAS 2026-09-11
KG4VAT 2026-09-11

Starting with K4

All →

K4HCL FL · 2026-09-09
K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10

Full history → Vanity availability → Callsign genealogy →