N9TPB FCC License Search
🕒 FCC license data updated yesterday 7:16 am CDT (FCC files through Oct 7, 2026) · next update today 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 · old CB calls like KHC1939 or 18Q3518 (1962–63 CB call books) · (205) 546-1767 (1990s CB directory phones)

K4COO HAM

General class licensed since 2023 (3 yrs) K4COO since 2024 · previously KF0OHJ Box Elder, SD Grid DN84kc 26 repeaters within 50 mi
🔒 Not available — currently licensed, through Jan 20, 2034. If it isn't renewed, it opens for vanity requests Jan 21, 2036.

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

📝 K4COO has filed vanity applications before — latest filed Jan 2, 2024 · what was requested

Currently held by POLINA VIRO · 2 holders on record

Current holder: POLINA VIRO

Held K4COO Jan 20, 2024 → present · first licensed Nov 22, 2023 as KF0OHJ · 2 licenses · FRN 0034507772

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

Previous holder: JACK C SPENCE JR

Held K4COO Mar 6, 2009 → May 5, 2019 · first licensed Jun 9, 1992 as KB4COO · 1 license · FRN 0018573295
📖 In the printed callbooks since 1984 as KB4COO, before the FCC's online records

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

Earlier Holders

K4COO in the 1993–2003 Callbooks
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.
K4COO in the Printed Callbooks, 1909–1997
From scanned copies of the printed callbooks (government lists from 1913, then the Radio Amateur Callbook to 1997), read by OCR, so names and streets can carry typos. Each line is one or more editions in a row showing the same name at the same address.

Vanity Applications Filed by K4COO

Calls this licensee has asked the FCC for, newest first, in their order of preference. The FCC processes applications 18 days after filing; "likely award" is our estimate from every pending application in filing order.

Filed · AwardApplicantRequested (in order)Status
Filed Jan 2, 2024
Granted Jan 20, 2024
0010835517
 KF0OHJ · POLINA VIRO · Technician
514 Americas Way 21617, BOX ELDER, SD 57719-7600
44.1038, -103.1455 (street) · Grid DN84kc · CQ 4 · ITU 7 · map ↗
1.K4COO ✓ Granted
 Granted
got K4COO

Others Requesting K4COO

5 applications listed K4COO as a choice, newest first.

FiledAwardApplicantChoice #K4COOResult
Sep 14, 2026 Oct 2, 2026 KR4OWY · Xacharias L Oliver · Chattanooga, TN 2Pending Pending
Jan 2, 2024 Jan 20, 2024 KF0OHJ · POLINA VIRO · BOX ELDER, SD 1Granted Granted this call
May 22, 2023 Jun 9, 2023 KA5LOL · GUY M TADLOCK · DESTIN, FL 4Not granted They got K4GUY (choice 1)
Feb 8, 2022 Feb 26, 2022 KO4NNZ · Russell W Hoade · Greer, SC 11Not granted They got K4RUL (choice 3)
May 5, 2021 May 23, 2021 KF5DJA · DAVID B GRANGER · Oakdale, LA 2Dismissed Application dismissed

📡 On the Air: APRS, Digital & WSPR Spots

No APRS positions, PSK Reporter reports or WSPR spots for K4COO in the last 24 hours. They show up here within seconds of K4COO beaconing on APRS, being heard on FT8, FT4 and other digital modes, or sending a WSPR beacon.

Repeaters within 50 Miles

26 repeaters within 50 miles of this address, most active 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
3.1 W0BLK Rapid City Radar
W0BLK
 146.9400 -0.6 TONE 146.2 FM (analog) — Rapid City, SD
3.1 W0BLK Rapid City Radar
W0BLK AllStar
 444.5750 +5 TSQL 146.2 FM (analog) AllStar 54962 EchoLink 732271 — Rapid City, SD
3.1 KE0QIB Rapid City Radar
KE0QIB
 444.7500 +5 TSQL 146.2 FM (analog) — Rapid City, SD
3.1 KE0QIB Offline Rapid City Radar
KE0QIB BM
 444.7000 +5 CC1 DMR BrandMeister 312555 — Rapid City, SD
4.1 KF0MKE Rapid City
KF0MKE BM
 434.5500 +5 CC1 DMR BrandMeister 319937602 — Rapid City, SD
4.5 W0RE Offline Rapid City
W0RE
 444.2000 +5 TSQL 146.2 FM (analog) — Rapid City, SD
5.2 WA0MFZ Offline Rapid City
WA0MFZ IRLP
 147.5700 simplex TSQL 146.2 FM (analog) IRLP 4044 — Rapid City, SD
5.2 N6SGX Offline Rapid City
N6SGX IRLP
 446.0000 simplex TSQL 100.0 FM (analog) IRLP 3967 — Rapid City, SD
10.3 K0LGB Offline RAPID CITY
K0LGB IRLP
 147.4700 simplex TSQL 146.2 FM (analog) IRLP 8701 — RAPID CITY, SD
29.9 K0HS Custer Mt
K0HS WIRES-X
 444.1200 +5 DCS 025 FM (analog) (FM,C4FM) WIRES-X 21493 — Custer, SD
29.9 K0HS Custer Mt
K0HS
 147.1200 +0.6 TSQL 146.2 FM (analog) — Custer, SD
32.4 WN6QJN Custer
WN6QJN
 147.0900 +0.6 TSQL 146.2 FM (analog) — Custer, SD
32.5 K0ORK Custer
K0ORK WIRES-X
 444.1200 +5 DG-ID 00-00 Fusion (C4FM) WIRES-X 98878 — Custer, SD
33.6 WN6QJN Offline Custer Bear Mtn
WN6QJN
 53.1700 -1 TSQL 146.2 FM (analog) — Custer, SD
33.9 KC0BXH Custer Bear Mtn
KC0BXH
 146.8500 -0.6 TONE 146.2 FM (analog) — Custer, SD
34.2 K0HS Custer Bear Mtn
K0HS
 444.8500 +5 none FM (analog) — Custer, SD
35.1 WB0JEK Lead Terry Pk
WB0JEK
 443.6500 +5 TSQL 131.8 FM (analog) — Lead, SD
37.5 KC0BXH Lead Terry Pk
KC0BXH
 146.7600 -0.6 TSQL 146.2 FM (analog) — Lead, SD
37.5 WB0JEK Lead Terry Pk
WB0JEK
 147.0300 +0.6 TONE 146.2 FM (analog) — Lead, SD
37.5 KC0BXH Lead Terry Pk
KC0BXH
 444.9750 +5 TSQL 146.2 FM (analog) — Lead, SD
44.8 K0HS Custer Pass
K0HS WIRES-X
 147.1500 +0.6 TSQL 146.2 FM (analog) (FM,C4FM) WIRES-X 21493 — Custer, SD
44.8 K0ORK Hot Springs
K0ORK WIRES-X
 147.7500 -0.6 DG-ID 00-00 Fusion (C4FM) WIRES-X 92626 — Hot Springs, SD
48.2 K0HS Hot Springs Batt
K0HS
 146.7000 -0.6 TONE 146.2 FM (analog) — Hot Springs, SD
48.2 K0HS Hot Springs Batt
K0HS WIRES-X
 444.7000 +5 DCS 025 FM (analog) (FM,C4FM) WIRES-X 21493 — Hot Springs, SD
48.3 K0ORK Hot springs
K0ORK WIRES-X
 449.7000 -5 DG-ID 00-00 Fusion (C4FM) WIRES-X 94494 — Hot springs, SD
49.8 W0FUI Hot Springs
W0FUI IRLP
 146.4750 simplex TONE 146.2 FM (analog) IRLP 7976 — Hot Springs, SD