N9TPB FCC License Search

🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 6, 2026) · next update tomorrow 6:00 am CDT

Ask: HAMs within 5 miles of N9TPB · Extra class operators in Madison, WI · or try N9TPB · K9* wildcards · Smith, John · 0004797601 (FRN) · 53703 · Madison, WI

K4MKS HAM

Amateur Extra class licensed since 1988 (38 yrs) Aiken, SC

🔒 Not available — currently licensed, through Nov 4, 2036. If it isn't renewed, it opens for vanity requests Nov 5, 2038.

📬 QSL: no LoTW uploads on record · not eQSL AG · QRZ · HamQTH

Currently held by M KENT SIDEL · 1 holder on record

Current holder: M KENT SIDEL

Held K4MKS Nov 4, 1996 → present · first licensed May 17, 1988 as AB4ID · 1 license · FRN 0005571047

K4MKS Active Amateur Extra · vanity Nov 4, 1996 → expires Nov 4, 2036

Licensee
M KENT SIDEL

Address
PO Box 5836
Aiken, SC 29804

FRN
0005571047

Previous call
AB4ID (Advanced)

Last granted
Aug 12, 2026

Effective
Aug 12, 2026

Last action
Aug 12, 2026
FCC actions (7)
- Aug 12, 2026 — License renewed LIREN
- Jan 31, 2026 — Administrative update LIAUA
- Aug 17, 2016 — License renewed LIREN
- Jan 30, 2010 — Administrative update LIAUA
- Mar 18, 2008 — Administrative update LIAUA
- Oct 28, 2006 — License renewed LIREN
- Oct 24, 2006 — FCC action LITIN

Callbook Records, 1993–2003

From the FCC amateur database as published on the QRZ! callsign CD-ROMs, 1993–2003, before and alongside the FCC's online records (which start in 1999). "Seen" dates are the first and last disc showing that record; the issue date is the FCC's, so it can be a renewal of an even older license.

Seen Apr 4, 1997 → Apr 17, 2003 · 12 discs
K4MKS · Amateur Extra · issued Nov 4, 1996, expires Nov 4, 2006 · previously AB4ID (Advanced)
M KENT SIDEL
231 S WACCAMAW AVE, COLUMBIA, SC 29205
Seen Apr 21, 1996 → Oct 27, 1996 · 2 discs
AB4ID · Amateur Extra · issued Feb 12, 1996, expires May 17, 1998
M KENT SIDEL
231 S WACCAMAW AVE, COLUMBIA, SC 29205
Seen Sep 9, 1993 → Oct 26, 1995 · 5 discs
AB4ID · Amateur Extra · issued May 17, 1988, expires May 17, 1998 · previously WD4GYA (Advanced)
M KENT SIDEL
2900 OCEOLA ST, COLUMBIA, SC 29205

Address history

From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.

Seen Sep 27, 2026 → Oct 4, 2026 · 2 snapshots · as K4MKS
M KENT SIDEL
PO Box 5836
Aiken, SC 29804
Seen May 27, 2010 → Sep 25, 2025 · 45 snapshots · as K4MKS
M KENT SIDEL
PO Box 3122
Hilton Head Island, SC 29928
32.1671, -80.7536 (ZIP center) · Grid EM92oe · CQ 5 · ITU 8 · map ↗
Seen Nov 7, 2004 · 1 snapshot · as K4MKS
M KENT SIDEL
231 S WACCAMAW AVE, COLUMBIA, SC 29205
33.9900, -80.9966 (ZIP center) · Grid EM93mx · CQ 5 · ITU 8 · map ↗

Others Requesting K4MKS

1 application listed K4MKS as a choice, newest first.

Filed	Award	Applicant	Choice #	K4MKS	Result
Oct 6, 1999	Oct 24, 1999	N4PWJ · MELVIN K SMITH · BABSON PARK, FL	2	Not granted	They got W4MZR (choice 1)

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for K4MKS in the last 24 hours. They show up here within seconds of K4MKS beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.