🕒 FCC license data updated today 7:15 am CDT (FCC files through Oct 4, 2026) · next update today 8:30 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
KO4SRU HAM
✅
Available for a vanity request — free since Oct 2, 2023.
2x3 call: any licensee can request it.
No pending applications list it.
📬 QSL:
no LoTW uploads on record
· not eQSL AG
· QRZ · HamQTH
Not currently held
· 1 holder on record
· available since Oct 2, 2023
Previous holder: William L POSTON
Held KO4SRU Jul 12, 2021 → Oct 1, 2021
· first licensed Jul 12, 2021 as KO4RUI
· 4 licenses · FRN 0031024847
KD4BP
Active
Amateur Extra · vanity
Sep 30, 2022 → expires Sep 30, 2032
Licensee William L POSTON
Address Attn: Bill Poston 5 FAIRWAY LN BLYTHEWOOD, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
FRN 0031024847
Previous call KD4NOX (General)
Last granted Sep 30, 2022
Effective Sep 30, 2022
Last action Sep 30, 2022
FCC actions (2)
Sep 30, 2022 — Vanity call sign granted VANGRT Sep 30, 2022 — License issued LIISS
KD4NOX
Canceled
Amateur Extra · vanity
Oct 1, 2021 → Sep 30, 2022 (canceled)
Licensee William L POSTON
Address Attn: Bill Poston 5 FAIRWAY LN BLYTHEWOOD, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
FRN 0031024847
Previous call KO4SRU (General)
Last granted Oct 1, 2021
Effective Jul 25, 2022
Last action Sep 30, 2022
FCC actions (4)
Sep 30, 2022 — License canceled LICAN Jul 25, 2022 — Administrative update LIAUA Oct 1, 2021 — Vanity call sign granted VANGRT Oct 1, 2021 — License issued LIISS
KO4SRU
Canceled
Amateur Extra
Jul 12, 2021 → Oct 1, 2021 (canceled)
Licensee BILL POSTON
Address 5 FAIRWAY LN BLYTHEWOOD, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
FRN 0031024847
Previous call KO4RUI (General)
Last granted Jul 12, 2021
Effective Aug 24, 2021
Last action Oct 1, 2021
FCC actions (5)
Oct 1, 2021 — License canceled LICAN Aug 24, 2021 — License modified LIMOD Aug 23, 2021 — Administrative update LIAUA Aug 19, 2021 — Systematic call sign granted SYSGRT Aug 19, 2021 — License issued LIISS
KO4RUI
Canceled
General
Jul 12, 2021 → Aug 19, 2021 (canceled)
Licensee Bill Poston
Address 5 Fairway Ln Blythewood, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
FRN 0031024847
Last granted Jul 12, 2021
Effective Aug 19, 2021
Last action Aug 19, 2021
FCC actions (3)
Aug 19, 2021 — License canceled LICAN Jul 12, 2021 — License issued LIISS Jul 12, 2021 — Systematic call sign granted SYSGRT
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Apr 27, 2024 → Oct 4, 2026 · 24 snapshots · as KD4NOX
William L POSTON
Attn: Bill Poston 5 FAIRWAY LN, BLYTHEWOOD, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
Seen Apr 16, 2022 → Oct 4, 2026 · 27 snapshots · as KO4RUI
Bill Poston
5 Fairway Ln, Blythewood, SC 29016
34.1773, -80.9318 (street) · Grid
EM94me · CQ 5 · ITU 8 ·
map ↗
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for KO4SRU in the last 24 hours. They show up here within seconds of KO4SRU beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.
Data: FCC Universal Licensing System (amateur & GMRS), NetLogger and more · site status
n9tpb.com · 73 de N9TPB