N9TPB FCC License Search
🕒 FCC license data updated today 9:42 am CDT (FCC files through Sep 30, 2026) · next update tomorrow 9:15 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

AD4OS HAM

🔒 Not available — currently licensed, through Apr 2, 2034. If it isn't renewed, it opens for vanity requests Apr 3, 2036.

📬 QSL: LoTW user, last upload Jun 10, 2026 · not eQSL AG

Currently held by KENNETH N WARREN JR · 1 holder on record

Current holder: KENNETH N WARREN JR

Held AD4OS Dec 8, 2000 → present · first licensed Dec 8, 2000 as AD4OS · 1 license · FRN 0002656445

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

📡 On the air: APRS, digital & WSPR spots

No APRS positions, PSK Reporter reports or WSPR spots for AD4OS in the last 24 hours. They show up here within seconds of AD4OS beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 miles

50 repeaters within 50 miles of this address, closest first · sort: closest · most active · map these & export for a radio →

● confirmed on the air · ● probably · ● reported off the air · ● unknown · ◉ this license · ring = 50 miles · click a dot for the repeater's page
● confirmed on the air · ● probably · ● reported off the air · no dot = unknown (hover a dot for the evidence)
MilesCallNameOutputOffsetToneModeNetworksActivityLocation
5.0 K7PEM Anamosa
K7PEM BM
 444.6375 +5 CC1 DMR BrandMeister 311922 — Anamosa, IA
5.5 W0CWP Anamosa
W0CWP
 145.3900 -0.6 TONE 77.0 FM (analog) — Anamosa, IA
18.5 NM5PB Central City
NM5PB AllStar
 442.9500 +5 DCS 612 FM (analog) (FM,C4FM) AllStar 526790 EchoLink 293882 — Central City, IA
21.1 W0GSK Bertram
W0GSK BM
 444.1250 +5 CC1 DMR BrandMeister 3180667 — Bertram, IA
21.4 K0LVB Mount Vernon
K0LVB BM
 147.2700 +0.6 TSQL 192.8 FM (analog) (C4FM,DMR,FM,P25) BrandMeister 312699 — Mount Vernon, IA
21.7 K0LVB Marion
K0LVB BM
 146.6850 -0.6 TSQL 192.8 FM (analog) (C4FM,DMR,FM,P25) BrandMeister 311494 — Marion, IA
24.6 K0LVB Cedar Rapids
K0LVB BM
 444.8250 +5 TSQL 192.8 FM (analog) (C4FM,DMR,FM,P25) BrandMeister 311471 — Cedar Rapids, IA
24.9 K0WLC Tipton
K0WLC BM
 444.0750 +5 CC2 DMR BrandMeister 311958 — Tipton, IA
25.2 W0WSV Cedar Rapids
W0WSV
 145.1500 -0.6 TONE 192.8 FM (analog) — Cedar Rapids, IA
25.2 N0DX Cedar Rapids
N0DX
 145.1900 -0.6 TONE 192.8 FM (analog) — Cedar Rapids, IA
25.2 W0GQ Cedar Rapids
W0GQ
 146.7450 -0.6 TONE 192.8 FM (analog) — Cedar Rapids, IA
25.2 W0WSV Cedar Rapids
W0WSV
 224.9400 -1.6 TONE 192.8 FM (analog) — Cedar Rapids, IA
25.5 W0GQ Cedar Rapids
W0GQ BM
 443.6000 +5 CC1 DMR BrandMeister 311938 — Cedar Rapids, IA
27.0 W0IY Cedar Rapids
W0IY
 927.1125 -25 DCS 432 FM (analog) — Cedar Rapids, IA
27.0 N0LGM Wheatland
N0LGM
 146.7300 -0.6 TSQL 94.8 FM (analog) (FM,C4FM) — Wheatland, IA
29.3 N0MA Cedar Rapids
N0MA AllStar
 443.8000 +5 TONE 192.8 FM (analog) AllStar 42186 — Cedar Rapids, IA
29.5 W0II Manchester
W0II
 147.3000 +0.6 none FM (analog) — Manchester, IA
30.0 NM0B Cedar Rapids
NM0B BM
 434.8400 +5 CC7 DMR BrandMeister 311457501 — Cedar Rapids, IA
32.1 W0DBQ Dubuque Co EOC
W0DBQ EchoLink
 147.2400 +0.6 TSQL 103.5 FM (analog) (FM,C4FM) EchoLink 441349 — Dubuque, IA
34.0 KE0OSQ Holy Cross
KE0OSQ BM
 433.0200 -0.6 CC1 DMR BrandMeister 312986 — Holy Cross, IA
34.6 W0OIC Dubuque
W0OIC WIRES-X
 146.7900 -0.6 TSQL 103.5 FM (analog) (C4FM,FM) WIRES-X 30870 — Dubuque, IA
34.8 W5ADT North Liberty
W5ADT
 443.9000 +5 TONE 192.8 FM (analog) — North Liberty, IA
35.2 KD9HAE dubuque
KD9HAE BM
 443.2000 +5 CC1 DMR BrandMeister 311935 BrandMeister 315541 — dubuque, IA
35.2 KD9HAE Dubuque
KD9HAE BM
 444.0500 +5 CC0 DMR BrandMeister 311951 — Dubuque, IA
36.2 K0JXC Springbrook
K0JXC
 147.0600 +0.6 TSQL 192.8 FM (analog) (FM,C4FM) — Springbrook, IA
36.9 KE0BX Iowa City
KE0BX
 145.4700 -0.6 TONE 100.0 FM (analog) — Iowa City, IA
36.9 W0JV Iowa City
W0JV
 146.8500 -0.6 TONE 192.8 FM (analog) — Iowa City, IA
37.1 W0FDA Coralville
W0FDA
 147.1500 +0.6 TONE 192.8 FM (analog) — Coralville, IA
37.1 K0GH Coralville
K0GH
 444.7500 +5 TONE 151.4 FM (analog) — Coralville, IA
37.3 KD0MVJ Iowa City
KD0MVJ BM
 443.4750 +5 CC1 DMR BrandMeister 310182 — Iowa City, IA
37.3 KD0QQL Iowa City
KD0QQL BM
 439.5500 +5 CC12 DMR BrandMeister 312043 — Iowa City, IA
39.2 KD0MVJ Iowa City Joint
KD0MVJ
 145.2700 -0.6 TONE 192.8 FM (analog) — Iowa City, IA
39.2 KD0MVJ Iowa City JECC
KD0MVJ
 442.1500 +5 TONE 192.8 FM (analog) — Iowa City, IA
39.4 N9PNO Dubuque
N9PNO
 444.2250 +5 none D-STAR — Dubuque, IA
42.5 KC0RMS Independence
KC0RMS
 145.3300 -0.6 TSQL 103.5 FM (analog) — Independence, IA
43.2 KC0RMS Independence
KC0RMS BM
 442.9000 +5 none FM (analog) (DMR,FM) BrandMeister 311913 — Independence, IA
44.8 W0BXR Eldridge River
W0BXR
 146.8800 -0.6 TSQL 77.0 FM (analog) (C4FM,FM) 🗓 2 nets 2 nets · 21 check-ins · 14 stations Eldridge, IA
47.3 KD9HAE Hazel Green
KD9HAE
 443.0688 +5 CC? DMR — Hazel Green, WI
48.2 KC0AQS Muscatine MCC
KC0AQS AllStar
 146.9100 -0.6 TSQL 192.8 FM (analog) (C4FM,FM) EchoLink 52761 AllStar 51631 🗓 2 nets 2 nets Muscatine, IA
48.6 N0WLU Beetown
N0WLU EchoLink
 146.8950 -0.6 TSQL 114.8 FM (analog) EchoLink 930729 — Beetown, WI
49.1 AC0EC Muscatine MCC
AC0EC BM
 444.1250 +5 CC2 DMR BrandMeister 311405 🗓 1 net 1 net Muscatine, IA
49.3 AC0EC Muscatine
AC0EC
 444.0750 +5 CC2 DMR 🗓 1 net 1 net Muscatine, IA
49.3 W0PCD Muscatine
W0PCD AllStar
 433.7000 simplex TONE 192.8 FM (analog) AllStar 51193 — Muscatine, IA
49.4 KD0DKS Garrison
KD0DKS EchoLink
 145.2300 -0.6 TONE 141.3 FM (analog) EchoLink 156410 — Garrison, IA
49.5 W0PCD Muscatine
W0PCD BM
 446.2500 -5 CC1 DMR BrandMeister 3105989 — Muscatine, IA
25.2 W0WSV offline Cedar Rapids
W0WSV
 147.0900 +0.6 TONE 192.8 FM (analog) — Cedar Rapids, IA
37.3 N0MRZ offline Wilton
N0MRZ BM
 444.0750 +5 CC2 DMR BrandMeister 312856 — Wilton, IA
38.6 NO3R offline Vinton
NO3R BM
 442.0000 +5 CC1 DMR BrandMeister 311904 — Vinton, IA
39.6 K0GH offline Iowa City
K0GH BM
 443.7750 +5 CC1 DMR BrandMeister 311925 — Iowa City, IA
49.4 KT0TT offline Muscatine W Hl
KT0TT AllStar
 446.2000 simplex TONE 100.0 FM (analog) AllStar 50377 AllStar 503770 — Muscatine, IA

Data courtesy of RepeaterBook.com