🕒 FCC license data updated today 6:02 am CDT (FCC files through Oct 2, 2026) · next update today 7:15 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
W4CSU HAM
✅
Available for a vanity request — free since Mar 10, 2026.
1x3 call: Technician, General, Advanced and Amateur Extra licensees 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 Mar 10, 2026
Previous holder: WINFIELD E IRELAND
Held W4CSU Dec 4, 2007 → Mar 9, 2024
· first licensed Dec 4, 2007 as W4CSU
· 4 licenses · FRN 0010328540
NT0A
Active
Amateur Extra · vanity
Mar 8, 2025 → expires Mar 8, 2035
Licensee WINFIELD E IRELAND
Address 2319 W 49TH AVE DENVER, CO 80221
39.7857, -105.0149 (street) · Grid
DM79ls · CQ 4 · ITU 7 ·
map ↗
FRN 0010328540
Previous call W0CSU (Advanced)
Last granted Mar 8, 2025
Effective Mar 8, 2025
Last action Mar 8, 2025
FCC actions (2)
Mar 8, 2025 — Vanity call sign granted VANGRT Mar 8, 2025 — License issued LIISS
W0CSU
Canceled
Amateur Extra · vanity
May 29, 2024 → Mar 8, 2025 (canceled)
Licensee WINFIELD E IRELAND
Address 2319 W 49TH AVE DENVER, CO 80221
39.7857, -105.0149 (street) · Grid
DM79ls · CQ 4 · ITU 7 ·
map ↗
FRN 0010328540
Previous call NT0A (Advanced)
Last granted May 29, 2024
Effective May 29, 2024
Last action Mar 8, 2025
FCC actions (3)
Mar 8, 2025 — License canceled LICAN May 29, 2024 — Vanity call sign granted VANGRT May 29, 2024 — License issued LIISS
NT0A
Canceled
Amateur Extra · vanity
Mar 9, 2024 → May 29, 2024 (canceled)
Licensee WINFIELD E IRELAND
Address 2319 W 49TH AVE DENVER, CO 80221
39.7857, -105.0149 (street) · Grid
DM79ls · CQ 4 · ITU 7 ·
map ↗
FRN 0010328540
Previous call W4CSU (Advanced)
Last granted Mar 9, 2024
Effective Mar 9, 2024
Last action May 29, 2024
FCC actions (3)
May 29, 2024 — License canceled LICAN Mar 9, 2024 — Vanity call sign granted VANGRT Mar 9, 2024 — License issued LIISS
W4CSU
Canceled
Amateur Extra · vanity
Dec 4, 2007 → Mar 9, 2024 (canceled)
Licensee WINFIELD E IRELAND
Address 2319 W 49TH AVE DENVER, CO 80221
39.7857, -105.0149 (street) · Grid
DM79ls · CQ 4 · ITU 7 ·
map ↗
FRN 0010328540
Previous call NR0U (Advanced)
Last granted Nov 28, 2017
Effective Nov 28, 2017
Last action Mar 9, 2024
FCC actions (3)
Mar 9, 2024 — License canceled LICAN Nov 28, 2017 — License renewed LIREN Dec 4, 2007 — License renewed LIREN
Address history
From FCC database snapshots (2004 → now). "Seen" dates are the first and last snapshot showing that address.
Seen Nov 7, 2004 → Sep 27, 2026 · 73 snapshots · as W4CSU
WINFIELD E IRELAND
2319 W 49TH AVE, DENVER, CO 80221
39.7857, -105.0149 (street) · Grid
DM79ls · CQ 4 · ITU 7 ·
map ↗
📡 On the air: APRS, digital & WSPR spots
No APRS positions, PSK Reporter reports or WSPR spots for W4CSU in the last 24 hours. They show up here within seconds of W4CSU 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